{"id":13401,"date":"2026-03-10T11:09:23","date_gmt":"2026-03-10T03:09:23","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=13401"},"modified":"2026-05-15T12:52:06","modified_gmt":"2026-05-15T04:52:06","slug":"d2-tool-steel-machining-parameters","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/d2-tool-steel-machining-parameters\/","title":{"rendered":"D2 Tool Steel Machining Parameters: Speeds, Feeds & Grinding"},"content":{"rendered":"
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D2 Tool Steel Machining Parameters: Turning, Milling, Drilling & Grinding<\/h1>\n\n\n\n

D2 tool steel should normally be rough-machined in the annealed condition before heat treatment. In this condition, D2 can be turned, milled, drilled, and ground with suitable carbide, cermet, or high-quality tool materials, but cutting speeds must be conservative because its chromium-rich carbides cause rapid tool wear.<\/p>\n\n\n\n

After hardening to about 58\u201362 HRC, conventional turning, milling, and drilling become much more difficult. Hardened D2 is usually finished by grinding, EDM, PCBN hard turning, or controlled hard milling. The correct parameters depend on the steel condition, tool material, machine rigidity, coolant control, and required surface finish.<\/p>\n\n\n\n

Quick Parameter Summary for D2 Tool Steel<\/h2>\n\n\n\n
Opera\u00e7\u00e3o<\/strong><\/td>Material Condition<\/strong><\/td>Recommended Tool or Process<\/strong><\/td>Nota pr\u00e1tica<\/strong><\/td><\/tr>
Rough turning<\/td>Annealed, about 200\u2013250 HB<\/td>Coated carbide<\/td>Use conservative speed because D2 is abrasive<\/td><\/tr>
Finish turning<\/td>Recozido<\/td>Coated carbide or cermet<\/td>Cermet can run faster, but only with stable setup<\/td><\/tr>
Hard turning<\/td>Hardened, about 58\u201362 HRC<\/td>PCBN or ceramic<\/td>Mainly for finishing, not heavy stock removal<\/td><\/tr>
Fresagem<\/td>Annealed preferred<\/td>Coated carbide or high-quality HSS<\/td>Keep tool overhang short and avoid chatter<\/td><\/tr>
Moagem dura<\/td>Hardened, about 58\u201362 HRC<\/td>Coated carbide or PCBN<\/td>Requires rigid machines and stable engagement<\/td><\/tr>
Perfura\u00e7\u00e3o<\/td>Annealed preferred<\/td>Cobalt HSS, carbide-tipped, or solid carbide drills<\/td>Drill before hardening whenever possible<\/td><\/tr>
Moagem<\/td>Annealed or hardened<\/td>Conventional, SG, or CBN wheels<\/td>Control heat to avoid burn and cracks<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Factors That Influence D2 Machining Parameters<\/h2>\n\n\n\n

D2 is difficult to machine because its high carbon and chromium content forms hard chromium-rich carbides in the steel matrix. These carbides give D2 strong wear resistance in service, but during machining, they abrade the cutting edge and increase cutting forces.<\/p>\n\n\n\n

A practical machinability rating for D2 is often around 45% compared with a 1% carbon water-hardening tool steel such as W1. This means D2 normally requires lower cutting speeds, stronger cutting tools, rigid workholding, and careful heat control.<\/p>\n\n\n\n

The steel condition has the biggest effect on parameter selection. Annealed D2 is much easier to machine because its spheroidized carbides are distributed in a softer matrix. Hardened D2, normally about 58\u201362 HRC in cold-work tooling, requires PCBN, ceramic tools, grinding, or EDM for final finishing.<\/p>\n\n\n\n

For this reason, most stock removal should be completed before heat treatment. Post-hardening machining should be limited to final dimensional correction and surface finishing.<\/p>\n\n\n\n

Turning Parameters for Annealed D2 Tool Steel<\/h2>\n\n\n\n

D2 is normally turned in the annealed condition before hardening. For parameter selection, annealed D2 is commonly treated as a 200\u2013250 HB tool steel.<\/p>\n\n\n\n

The following values are starting references, not fixed production standards. Actual parameters must be adjusted according to bar diameter, insert geometry, coating, machine rigidity, coolant condition, workholding stability, and surface finish requirements.<\/p>\n\n\n\n

Turning Parameters Using Coated Carbide Tools<\/h3>\n\n\n\n
Opera\u00e7\u00e3o<\/strong><\/td>Profundidade de corte<\/strong><\/td>Taxa de alimenta\u00e7\u00e3o<\/strong><\/td>Velocidade de corte<\/strong><\/td>Tool Grade<\/strong><\/td><\/tr>
Roughing<\/td>0.300 in.<\/td>0.015 ipr<\/td>200 sfm<\/td>C6 \/ M30, P30<\/td><\/tr>
Semiroughing<\/td>0.150 in.<\/td>0.010 ipr<\/td>275 sfm<\/td>C6 \/ M20, P20<\/td><\/tr>
Finishing<\/td>0.040 in.<\/td>0.005 ipr<\/td>575 sfm<\/td>C7 \/ M10, P10<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Coated carbide tools are a practical choice for annealed D2 because they resist abrasive wear better than standard high-speed steel tools. If tool wear, chatter, or poor surface finish occurs, reduce the cutting speed first and check the setup rigidity before increasing the feed or depth of cut.<\/p>\n\n\n\n

Turning Parameters Using Cermet Tools<\/h3>\n\n\n\n
Opera\u00e7\u00e3o<\/strong><\/td>Profundidade de corte<\/strong><\/td>Taxa de alimenta\u00e7\u00e3o<\/strong><\/td>Velocidade de corte<\/strong><\/td>Tool Material<\/strong><\/td><\/tr>
Roughing<\/td>0.300 in.<\/td>0.015 ipr<\/td>550 sfm<\/td>HPC cermet<\/td><\/tr>
Semiroughing<\/td>0.150 in.<\/td>0.010 ipr<\/td>750 sfm<\/td>HPC cermet<\/td><\/tr>
Finishing<\/td>0.040 in.<\/td>0.005 ipr<\/td>1300 sfm<\/td>HPC cermet<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Cermet tools can use higher cutting speeds than coated carbide tools, especially in semi-finish and finish turning. These higher speeds are only suitable when the machine, holder, and workpiece clamping are stable. If the setup is weak, coated carbide at a lower speed is usually safer.<\/p>\n\n\n\n

Aobo Steel supplies D2 in an annealed condition with machining allowance for turning, milling, and heat-treatment preparation.<\/em><\/p>\n\n\n\n

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Request D2 Dimensions & Availability<\/a><\/div>\n<\/div>\n\n\n\n

Hard Turning Parameters for Hardened D2 Tool Steel<\/h2>\n\n\n\n

Hard turning may be used when D2 is hardened to about 58\u201362 HRC, but it should be treated as a finishing method. It is not a practical method for heavy stock removal.<\/p>\n\n\n\n

PCBN tools are usually preferred for hardened D2 because they can resist high cutting temperatures and abrasive wear. Ceramic tools may also be used in suitable cases, but they require stable, continuous cutting and are less tolerant of interrupted cuts.<\/p>\n\n\n\n

Condi\u00e7\u00e3o<\/strong><\/td>Tool Material<\/strong><\/td>Velocidade de corte<\/strong><\/td>Taxa de alimenta\u00e7\u00e3o<\/strong><\/td>Profundidade de corte<\/strong><\/td>Practical Use<\/strong><\/td><\/tr>
Hardened D2, about 58\u201362 HRC<\/td>PCBN<\/td>70\u2013120 m\/min<\/td>0.08\u20130.20 mm\/rev<\/td>Light finishing cuts<\/td>Conservative starting range<\/td><\/tr>
Hardened D2, about 58 HRC<\/td>PCBN<\/td>80\u2013220 m\/min<\/td>0.05\u20130.15 mm\/rev<\/td>About 0.2 mm<\/td>Surface finish optimization<\/td><\/tr>
Hardened steel baseline, 45\u201365 HRC<\/td>PCBN or ceramic<\/td>150\u2013200 m\/min<\/td>0.15\u20130.20 mm\/rev<\/td>0.20\u20130.30 mm<\/td>General reference range<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

For hardened D2 around 58 HRC, surface roughness values of about Ra 0.28\u20131.12 \u00b5m can be achieved when speed, feed, depth of cut, tool geometry, and machine rigidity are properly controlled. For a better surface finish, use a lower feed rate and a stable cutting setup.<\/p>\n\n\n\n

Hard turning is most suitable for cylindrical surfaces, stable geometries, and finishing cuts with good tool access. Grinding is still preferred when the part requires very tight flatness, sharp corners, extremely fine surface finish, or strict dimensional control.<\/p>\n\n\n\n

For unsupported workpieces, keep the length-to-diameter ratio below 4:1 whenever possible to reduce chatter and deflection.<\/p>\n\n\n\n

Milling Guidelines for D2 Tool Steel<\/h2>\n\n\n\n

D2 should be milled in the annealed condition whenever possible. Milling hardened D2 is possible, but it requires hard-milling tools, short tool projection, and a rigid machine.<\/p>\n\n\n\n

Milling Annealed D2 Tool Steel<\/h3>\n\n\n\n

Annealed D2 is still abrasive, but it is much easier to mill than hardened D2. The main goal is to remove most of the stock before heat treatment, while leaving enough allowance for final finishing after hardening.<\/p>\n\n\n\n

Milling Factor<\/strong><\/td>Practical Recommendation<\/strong><\/td><\/tr>
Material condition<\/td>Mill in the annealed condition whenever possible<\/td><\/tr>
Tool material<\/td>Use coated carbide for better wear resistance; use high-quality HSS only for slower operations<\/td><\/tr>
Cutting speed<\/td>Use conservative speed because D2 carbides accelerate tool wear<\/td><\/tr>
Tool setup<\/td>Keep tool overhang short and use rigid holders<\/td><\/tr>
Workholding<\/td>Clamp the workpiece firmly and support the cutting area<\/td><\/tr>
Cutting strategy<\/td>Avoid unstable interrupted cuts and excessive radial engagement<\/td><\/tr>
Chip control<\/td>Maintain consistent chip evacuation with coolant, air blast, or tool supplier guidance<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Carbide tools can run faster than HSS tools, but only when the machine, holder, and workpiece setup are rigid enough. If chatter occurs, lower the cutting speed, reduce radial engagement, and check tool projection.<\/p>\n\n\n\n

Hard Milling Hardened D2 Tool Steel<\/h3>\n\n\n\n

Hard milling D2 at 58\u201362 HRC is mainly a finishing operation. It should not replace rough machining in the annealed condition.<\/p>\n\n\n\n

Coated carbide tools may be used for hard milling when the setup is stable. PCBN end mills can produce finer finishes in suitable applications. In documented hard-milling trials, PCBN tools achieved surface roughness around Ra 0.1\u20130.2 \u00b5m, while carbide ball-nose end mills produced rougher surfaces around Ra 1\u20136 \u00b5m under difficult conditions.<\/p>\n\n\n\n

For ball-end milling, tilting the tool by about 15\u00b0 to 20\u00b0 can move the cutting action away from the tool center, where the cutting speed is very low. This helps improve cutting stability and tool life.<\/p>\n\n\n\n

Drilling Guidelines for D2 Tool Steel<\/h2>\n\n\n\n

D2 should be drilled before hardening whenever possible. Once hardened, conventional drilling becomes slow, expensive, and risky. For hardened D2, EDM or special carbide drilling methods may be more practical.<\/p>\n\n\n\n

D2 wears drills quickly because the drill margins and cutting lips continuously contact hard chromium carbides. This can cause margin wear, increased thrust, heat buildup, poor hole accuracy, and drill breakage.<\/p>\n\n\n\n

Drilling Factor<\/strong><\/td>Practical Recommendation<\/strong><\/td><\/tr>
Material condition<\/td>Drill in the annealed condition whenever possible<\/td><\/tr>
Tool material<\/td>Use cobalt HSS, carbide-tipped, or solid carbide drills depending on hole size and production volume<\/td><\/tr>
Revestimentos<\/td>TiN, TiCN, or TiAlN can improve wear resistance and reduce friction<\/td><\/tr>
Drill point<\/td>Use split-point geometry to reduce thrust and prevent walking<\/td><\/tr>
Point angle<\/td>118\u00b0 is common for annealed D2; 140\u00b0\u2013150\u00b0 may be used for harder conditions<\/td><\/tr>
Refrigerante<\/td>Use sufficient cutting fluid to control heat and flush chips<\/td><\/tr>
Deep holes<\/td>Use peck drilling or coolant-through drills<\/td><\/tr>
Hardened D2<\/td>Avoid standard drilling; consider EDM or special carbide drilling<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

For low-volume drilling in annealed D2, HSS drills may work, but tool wear will be faster than in simpler steels. For better hole accuracy and tool life, cobalt HSS, carbide-tipped, or solid carbide drills are preferred.<\/p>\n\n\n\n

Deep holes need reliable chip evacuation. If chips pack in the flutes, coolant cannot reach the cutting edge, and the drill may fail quickly. Peck drilling or coolant-through drills help reduce this risk.<\/p>\n\n\n\n

Avoid dwelling at the bottom of the hole. The drill must continue cutting with a stable feed. Rubbing without cutting generates heat and damages the tool and workpiece surface.<\/p>\n\n\n\n

Grinding Parameters for D2 Tool Steel<\/h2>\n\n\n\n

Grinding is commonly used after heat treatment to correct distortion, remove scale, and achieve the final tolerance. D2 is difficult to grind because its chromium carbides resist abrasive cutting. If grinding heat is not controlled, the surface may suffer from softening, rehardened layers, microcracks, or grinding cracks.<\/p>\n\n\n\n

Surface Grinding Parameters for D2 Tool Steel<\/h3>\n\n\n\n
Condition \/ Hardness<\/strong><\/td>Wheel Speed<\/strong><\/td>Table Speed<\/strong><\/td>Downfeed<\/strong><\/td>Crossfeed<\/strong><\/td>Wheel Identification<\/strong><\/td><\/tr>
Annealed, max 50 HRC<\/td>5500\u20136500 fpm<\/td>50\u2013100 fpm<\/td>Rough: 0.003 in\/pass; Finish: 0.0005 in\/pass max<\/td>0.050\u20130.500 in\/pass<\/td>A46JV<\/td><\/tr>
Hardened, 50\u201358 HRC<\/td>3000\u20134000 fpm<\/td>50\u2013100 fpm<\/td>Rough: 0.002 in\/pass; Finish: 0.0005 in\/pass max<\/td>0.025\u20130.250 in\/pass<\/td>A46IV<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

If CBN wheels are used for surface grinding annealed D2 up to about 50 HRC, wet wheel speeds may be increased to 5500\u20138000 fpm with a suitable CBN wheel such as B100T75B. For cylindrical grinding of annealed D2, an A60KV wheel may be used with wheel speeds of 5500\u20136500 fpm and work speeds of 60\u2013100 fpm.<\/p>\n\n\n\n

Grinding Wheel and Coolant Selection<\/h3>\n\n\n\n

For conventional grinding, use a wheel that cuts freely and does not glaze easily. A wheel that is too hard or too fine may rub instead of cut, causing excessive heat.<\/p>\n\n\n\n

Advanced abrasives such as SG or vitrified CBN wheels may improve wheel life and thermal control in suitable applications. CBN wheels can be effective for hardened tool steels, but they still require correct coolant delivery, stable dressing, and controlled stock removal.<\/p>\n\n\n\n

Coolant must continuously reach the grinding zone. Poor nozzle position, insufficient flow, or intermittent coolant can cause local overheating and thermal shock. If grinding burn, visible discoloration, surface softening, or microcracks are the main issues, this topic should be handled in a separate guide on preventing grinding burn in D2 tool steel.<\/p>\n\n\n\n

Post-Grinding Stress Relief<\/h3>\n\n\n\n

For critical D2 tooling, a stress-relief temper after significant grinding is recommended. A practical post-grinding temper is usually performed below the original tempering temperature, typically by about 14\u201340 \u00b0C (25\u201380 \u00b0F). This helps relieve residual stress and temper any freshly formed martensite without significantly reducing final hardness.<\/p>\n\n\n\n

Grinding stability depends not only on parameters, but also on material quality.
Aobo Steel supplies forged D2 tool steel with stable chemistry and ultrasonic inspection available for industrial tooling applications.<\/em><\/p>\n\n\n\n

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Contact Aobo Steel for D2 Supply<\/a><\/div>\n<\/div>\n\n\n\n

Recommended Machining Sequence<\/h2>\n\n\n\n

D2 machining parameters should be selected together with the manufacturing sequence. The best practice is to remove most material before hardening and reserve post-hardening operations for final finishing.<\/p>\n\n\n\n

Est\u00e1gio<\/strong><\/td>Recommended Operation<\/strong><\/td>Finalidade<\/strong><\/td><\/tr>
Raw material preparation<\/td>Remove scale, decarburized layer, and rough surface defects<\/td>Improve machining consistency<\/td><\/tr>
Rough machining<\/td>Machine in annealed condition<\/td>Remove most stock with lower tool wear<\/td><\/tr>
Al\u00edvio do estresse<\/td>Apply after heavy rough machining when required<\/td>Reduce distortion during hardening<\/td><\/tr>
Semi-finish machining<\/td>Leave suitable allowance for heat-treatment movement<\/td>Prepare geometry before hardening<\/td><\/tr>
Tratamento t\u00e9rmico<\/td>Harden and temper to required working hardness<\/td>Achieve final wear resistance<\/td><\/tr>
Final finishing<\/td>Use grinding, EDM, PCBN hard turning, or hard milling<\/td>Achieve final tolerance and surface finish<\/td><\/tr>
Inspe\u00e7\u00e3o<\/td>Check size, surface condition, and grinding damage<\/td>Reduce risk of premature tool failure<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

This sequence matters because hardened D2 is slow and costly to machine. If too much stock remains after heat treatment, grinding time increases, and the risk of burning or cracking rises.<\/p>\n\n\n\n

Stable machining starts with stable annealed D2 steel.
Aobo Steel supplies forged D2 round and flat bars in an annealed condition for machining prior to heat treatment. Contact us for bulk sizes and container-based supply.<\/em><\/p>\n\n\n\n

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Request D2 Supply<\/a><\/div>\n<\/div>\n\n\n\n

Practical Notes for Stable Machining D2 Steel<\/h2>\n\n\n\n

Stable machining of D2 depends on the full machining system. Cutting speed and feed rate alone are not enough. The machine, toolholder, fixture, workpiece support, coolant delivery, and tool material must be matched to the operation.<\/p>\n\n\n\n

Rigidity is the first requirement. Keep the tool overhang short, clamp the workpiece close to the cutting area, and avoid weak setups. For unsupported turning or boring, keeping the length-to-diameter ratio below 4:1 helps reduce deflection and chatter.<\/p>\n\n\n\n

Chatter must be controlled early. If vibration appears, carbide and ceramic tools can chip quickly. In milling, reduce unstable engagement and check cutter pitch, radial depth of cut, and tool projection. When turning, check the holder’s rigidity, nose radius, and edge preparation.<\/p>\n\n\n\n

Coolant strategy must be consistent. In conventional machining, stable coolant flow helps remove heat and chips. In hard milling, flood coolant may cause thermal shock in some cases, so air blast or minimum-quantity lubrication may be preferred depending on the tool supplier’s guidance. Intermittent coolant should be avoided.<\/p>\n\n\n\n

Tool material should match the D2 condition. Coated carbide is suitable for turning and milling annealed D2. Cermet may be used for higher-speed finishing when the setup is stable. PCBN and ceramic tools are suitable for finishing hardened D2. Standard uncoated HSS tools should be used carefully because D2 can wear them rapidly.<\/p>\n\n\n\n

For drilling, power feed is preferred over hand feeding. A constant feed helps the drill cut rather than rub. Hole entrances and exits should be deburred or lightly chamfered to reduce stress concentration in tooling components.<\/p>\n\n\n\n

Conclus\u00e3o<\/h2>\n\n\n\n

In the annealed condition, D2 can be turned, milled, drilled, and ground with suitable carbide, cermet, or high-quality tool materials. In the hardened condition, conventional machining becomes difficult, and final finishing usually depends on grinding, EDM, PCBN hard turning, or controlled hard milling.<\/p>\n\n\n\n

The most important rule is to complete heavy material removal before heat treatment. After hardening, machining should be limited to precision finishing with controlled heat, rigid setups, and suitable tooling. This reduces tool wear, improves dimensional stability, and lowers the risk of grinding burn, cracking, and premature tool failure.<\/p>\n\n\n\n

Aobo Steel supplies D2 tool steel in an annealed condition for machining before heat treatment. For bulk orders of D2 round bar or flat bar, please review our D2 Tool Steel product page or contact sales@aobosteel.com<\/a> for available sizes, supply conditions, and container-based purchasing details.<\/em><\/p>\n\n\n\n

Please note that Aobo Steel does not provide CNC finish machining or finished tooling manufacturing services. This article is provided as technical support reference material for our customers when planning the machining, heat-treatment, and finishing processes for D2 tool steel.<\/em><\/p>\n\n\n\n

Perguntas frequentes<\/h2>\n\n\n\n
What are the recommended machining parameters for D2 tool steel?<\/strong><\/strong>

D2 tool steel should normally be machined in the annealed condition, usually around 200\u2013250 HB. For annealed D2 turning with coated carbide tools, practical starting values include about 200 sfm for roughing, 275 sfm for semi-roughing, and 575 sfm for finishing. These values must be adjusted according to tool grade, insert geometry, workpiece size, coolant, machine rigidity, and required surface finish.<\/p> <\/div>

Can D2 tool steel be machined after heat treatment?<\/strong>

Yes, but conventional machining becomes difficult after D2 is hardened to about 58\u201362 HRC. In this condition, D2 is usually finished by grinding, EDM, PCBN hard turning, or controlled hard milling. Heavy stock removal should be completed before heat treatment whenever possible.<\/p> <\/div>

What is the best condition for machining D2 tool steel?<\/strong>

The best condition for machining D2 tool steel is the annealed condition. Annealed D2 has lower hardness and better machinability, while hardened D2 has high wear resistance and is much harder to cut. For most tooling components, rough machining should be done before hardening, and only final finishing should be done after heat treatment.<\/p> <\/div>

Por que o a\u00e7o para ferramentas D2 \u00e9 dif\u00edcil de usinar?<\/strong>

D2 is difficult to machine because it contains a high volume of hard chromium-rich carbides. These carbides improve wear resistance in service, but during machining, they abrade the cutting edge, increase cutting forces, generate heat, and shorten tool life.<\/p> <\/div>

What tools are recommended for machining D2 steel?<\/strong>

For annealed D2, coated carbide tools are commonly used for turning and milling. Cermet tools may be used for higher-speed finishing when the setup is stable. For hardened D2, PCBN, and ceramic tools are more suitable for finishing operations. For drilling, cobalt HSS, carbide-tipped, or solid carbide drills are preferred depending on hole size and production requirements.<\/p> <\/div>

Can D2 tool steel be drilled after hardening?<\/strong>

Standard drilling after hardening is not recommended. Hardened D2 is highly abrasive and difficult to penetrate with conventional drills. If holes are required, they should usually be drilled before heat treatment. For hardened D2, EDM or special carbide drilling methods may be more practical.<\/p> <\/div>

What grinding parameters are suitable for D2 tool steel?<\/strong>

For surface grinding annealed D2 up to about 50 HRC, a starting range may include a wheel speed of 5500\u20136500 fpm, a table speed of 50\u2013100 fpm, and a rough downfeed of around 0.003 in\/pass. For hardened D2 at 50\u201358 HRC, wheel speed is often reduced to about 3000\u20134000 fpm, with a rough downfeed of around 0.002 in\/pass. Finish downfeed should be very light, commonly around 0.0005 in\/pass maximum.<\/p> <\/div>

How can grinding burn be avoided when grinding D2?<\/strong>

Grinding burn can be reduced by using light downfeed, proper wheel selection, frequent dressing, stable coolant delivery, and controlled stock removal. Because D2 has a high carbide content, the grinding wheel must cut freely rather than rub. Poor coolant flow, wheel glazing, or excessive stock removal can cause overheating, surface softening, rehardened layers, or cracks.<\/p> <\/div>

Is hard turning a replacement for grinding hardened D2?<\/strong>

Not always. Hard turning can be useful for finishing stable cylindrical surfaces when PCBN or ceramic tools are used, but grinding is still preferred for tight flatness, sharp corners, very fine surface finish, and strict dimensional control. Hard turning should be treated as a finishing option, not a universal replacement for grinding.<\/p> <\/div>

What is the recommended machining sequence for D2 tool steel?<\/strong>

The recommended sequence is rough machining in the annealed condition, stress relief when required, semi-finish machining with allowance for heat-treatment movement, hardening and tempering, then final finishing by grinding, EDM, PCBN hard turning, or hard milling. This sequence reduces tool wear, the risk of distortion, and post-hardening machining costs.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"

D2 Tool Steel Machining Parameters: Turning, Milling, Drilling & Grinding D2 tool steel should normally be rough-machined in the annealed condition before heat treatment. In this condition, D2 can be turned, milled, drilled, and ground with suitable carbide, cermet, or high-quality tool materials, but cutting speeds must be conservative because its chromium-rich carbides cause rapid […]<\/p>\n","protected":false},"author":1,"featured_media":15063,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"normal-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-13401","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nD2 Tool Steel Machining Parameters: Speeds, Feeds & Grinding<\/title>\n<meta name=\"description\" content=\"Find practical D2 tool steel machining parameters for turning, milling, drilling, hard turning, and grinding. Aobo Steel explains how to machine annealed and hardened D2.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/pt\/d2-tool-steel-machining-parameters\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D2 Tool Steel Machining Parameters: Speeds, Feeds & Grinding\" \/>\n<meta property=\"og:description\" content=\"Find practical D2 tool steel machining parameters for turning, milling, drilling, hard turning, and grinding. 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are the recommended machining parameters for D2 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"D2 tool steel should normally be machined in the annealed condition, usually around 200\u2013250 HB. For annealed D2 turning with coated carbide tools, practical starting values include about 200 sfm for roughing, 275 sfm for semi-roughing, and 575 sfm for finishing. These values must be adjusted according to tool grade, insert geometry, workpiece size, coolant, machine rigidity, and required surface finish.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072093287\",\"position\":2,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072093287\",\"name\":\"Can D2 tool steel be machined after heat treatment?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, but conventional machining becomes difficult after D2 is hardened to about 58\u201362 HRC. In this condition, D2 is usually finished by grinding, EDM, PCBN hard turning, or controlled hard milling. Heavy stock removal should be completed before heat treatment whenever possible.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072094210\",\"position\":3,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072094210\",\"name\":\"What is the best condition for machining D2 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The best condition for machining D2 tool steel is the annealed condition. Annealed D2 has lower hardness and better machinability, while hardened D2 has high wear resistance and is much harder to cut. For most tooling components, rough machining should be done before hardening, and only final finishing should be done after heat treatment.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072095347\",\"position\":4,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072095347\",\"name\":\"Why is D2 tool steel difficult to machine?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"D2 is difficult to machine because it contains a high volume of hard chromium-rich carbides. These carbides improve wear resistance in service, but during machining, they abrade the cutting edge, increase cutting forces, generate heat, and shorten tool life.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072124361\",\"position\":5,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072124361\",\"name\":\"What tools are recommended for machining D2 steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For annealed D2, coated carbide tools are commonly used for turning and milling. Cermet tools may be used for higher-speed finishing when the setup is stable. For hardened D2, PCBN, and ceramic tools are more suitable for finishing operations. For drilling, cobalt HSS, carbide-tipped, or solid carbide drills are preferred depending on hole size and production requirements.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072125362\",\"position\":6,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072125362\",\"name\":\"Can D2 tool steel be drilled after hardening?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Standard drilling after hardening is not recommended. Hardened D2 is highly abrasive and difficult to penetrate with conventional drills. If holes are required, they should usually be drilled before heat treatment. For hardened D2, EDM or special carbide drilling methods may be more practical.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072149605\",\"position\":7,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072149605\",\"name\":\"What grinding parameters are suitable for D2 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For surface grinding annealed D2 up to about 50 HRC, a starting range may include a wheel speed of 5500\u20136500 fpm, a table speed of 50\u2013100 fpm, and a rough downfeed of around 0.003 in\\\/pass. For hardened D2 at 50\u201358 HRC, wheel speed is often reduced to about 3000\u20134000 fpm, with a rough downfeed of around 0.002 in\\\/pass. Finish downfeed should be very light, commonly around 0.0005 in\\\/pass maximum.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072157025\",\"position\":8,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072157025\",\"name\":\"How can grinding burn be avoided when grinding D2?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Grinding burn can be reduced by using light downfeed, proper wheel selection, frequent dressing, stable coolant delivery, and controlled stock removal. Because D2 has a high carbide content, the grinding wheel must cut freely rather than rub. Poor coolant flow, wheel glazing, or excessive stock removal can cause overheating, surface softening, rehardened layers, or cracks.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072167411\",\"position\":9,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-machining-parameters\\\/#faq-question-1778072167411\",\"name\":\"Is hard turning a replacement for grinding hardened D2?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not always. Hard turning can be useful for finishing stable cylindrical surfaces when PCBN or ceramic tools are used, but grinding is still preferred for tight flatness, sharp corners, very fine surface finish, and strict dimensional control. 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For annealed D2 turning with coated carbide tools, practical starting values include about 200 sfm for roughing, 275 sfm for semi-roughing, and 575 sfm for finishing. These values must be adjusted according to tool grade, insert geometry, workpiece size, coolant, machine rigidity, and required surface finish.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072093287","position":2,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072093287","name":"Can D2 tool steel be machined after heat treatment?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, but conventional machining becomes difficult after D2 is hardened to about 58\u201362 HRC. In this condition, D2 is usually finished by grinding, EDM, PCBN hard turning, or controlled hard milling. Heavy stock removal should be completed before heat treatment whenever possible.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072094210","position":3,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072094210","name":"What is the best condition for machining D2 tool steel?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The best condition for machining D2 tool steel is the annealed condition. Annealed D2 has lower hardness and better machinability, while hardened D2 has high wear resistance and is much harder to cut. For most tooling components, rough machining should be done before hardening, and only final finishing should be done after heat treatment.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072095347","position":4,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072095347","name":"Por que o a\u00e7o para ferramentas D2 \u00e9 dif\u00edcil de usinar?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"D2 is difficult to machine because it contains a high volume of hard chromium-rich carbides. These carbides improve wear resistance in service, but during machining, they abrade the cutting edge, increase cutting forces, generate heat, and shorten tool life.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072124361","position":5,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072124361","name":"What tools are recommended for machining D2 steel?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"For annealed D2, coated carbide tools are commonly used for turning and milling. Cermet tools may be used for higher-speed finishing when the setup is stable. For hardened D2, PCBN, and ceramic tools are more suitable for finishing operations. For drilling, cobalt HSS, carbide-tipped, or solid carbide drills are preferred depending on hole size and production requirements.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072125362","position":6,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072125362","name":"Can D2 tool steel be drilled after hardening?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Standard drilling after hardening is not recommended. Hardened D2 is highly abrasive and difficult to penetrate with conventional drills. If holes are required, they should usually be drilled before heat treatment. For hardened D2, EDM or special carbide drilling methods may be more practical.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072149605","position":7,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072149605","name":"What grinding parameters are suitable for D2 tool steel?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"For surface grinding annealed D2 up to about 50 HRC, a starting range may include a wheel speed of 5500\u20136500 fpm, a table speed of 50\u2013100 fpm, and a rough downfeed of around 0.003 in\/pass. For hardened D2 at 50\u201358 HRC, wheel speed is often reduced to about 3000\u20134000 fpm, with a rough downfeed of around 0.002 in\/pass. Finish downfeed should be very light, commonly around 0.0005 in\/pass maximum.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072157025","position":8,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072157025","name":"How can grinding burn be avoided when grinding D2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Grinding burn can be reduced by using light downfeed, proper wheel selection, frequent dressing, stable coolant delivery, and controlled stock removal. Because D2 has a high carbide content, the grinding wheel must cut freely rather than rub. Poor coolant flow, wheel glazing, or excessive stock removal can cause overheating, surface softening, rehardened layers, or cracks.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072167411","position":9,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072167411","name":"Is hard turning a replacement for grinding hardened D2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Not always. Hard turning can be useful for finishing stable cylindrical surfaces when PCBN or ceramic tools are used, but grinding is still preferred for tight flatness, sharp corners, very fine surface finish, and strict dimensional control. Hard turning should be treated as a finishing option, not a universal replacement for grinding.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072178997","position":10,"url":"https:\/\/aobosteel.com\/d2-tool-steel-machining-parameters\/#faq-question-1778072178997","name":"What is the recommended machining sequence for D2 tool steel?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The recommended sequence is rough machining in the annealed condition, stress relief when required, semi-finish machining with allowance for heat-treatment movement, hardening and tempering, then final finishing by grinding, EDM, PCBN hard turning, or hard milling. This sequence reduces tool wear, the risk of distortion, and post-hardening machining costs.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-768x768.avif",768,768,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-12x12.avif",12,12,true]},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"D2 Tool Steel Machining Parameters: Turning, Milling, Drilling & Grinding D2 tool steel should normally be rough-machined in the annealed condition before heat treatment. In this condition, D2 can be turned, milled, drilled, and ground with suitable carbide, cermet, or high-quality tool materials, but cutting speeds must be conservative because its chromium-rich carbides cause rapid…","rttpg_featured_image_url":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad.avif",1254,1254,false],"landscape":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad.avif",1254,1254,false],"portraits":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-300x300.avif",300,300,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/Recommended-Cutting-Parameters-for-D2-Tool-Steel-ad-12x12.avif",12,12,true]},"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"D2 Tool Steel Machining Parameters: Turning, Milling, Drilling & Grinding D2 tool steel should normally be rough-machined in the annealed condition before heat treatment. In this condition, D2 can be turned, milled, drilled, and ground with suitable carbide, cermet, or high-quality tool materials, but cutting speeds must be conservative because its chromium-rich carbides cause rapid…","_links":{"self":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/13401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/comments?post=13401"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/13401\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media\/15063"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media?parent=13401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}