{"id":9843,"date":"2025-08-22T15:43:42","date_gmt":"2025-08-22T07:43:42","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9843"},"modified":"2026-10-22T13:38:18","modified_gmt":"2026-10-22T05:38:18","slug":"4cr5mosiv1-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/4cr5mosiv1-tool-steel\/","title":{"rendered":"4Cr5MoSiV1 \uace0\uc628 \uc791\uc5c5\uc6a9 \uacf5\uad6c\uac15 \uacf5\uae09\uc5c5\uccb4"},"content":{"rendered":"\n<style id=\"aobo-steel-rebuild\" data-noptimize=\"1\">\n\/* Rebuilt tool-steel page: banner is full-bleed, the body keeps the site's normal\n   content width. 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}\n.ads2-t.kv td:first-child { background: #f6f8fa; font-weight: 600; color: #062a5a; width: 34%; }\n.ads2-t.data { font-size: 14.5px; }\n.ads2-t.data td, .ads2-t.data th { padding: 9px 11px; }\n.ads2-t.data thead th, .ads2-t.data tr:first-child td { background: #eef3f9; font-weight: 700; color: #062a5a; }\n.ads2-t.data tbody tr:nth-child(odd) td { background: #fbfcfd; }\n@media (max-width: 1000px) {\n  .ads2-row { grid-template-columns: 1fr; gap: 22px; }\n  .ads2-row-flip .ads2-col-i { order: 0; }\n  .ads2-cols2 { grid-template-columns: 1fr; }\n  .ads2-h1 { font-size: 30px; }\n  .ads2-hero { min-height: 340px; }\n}\n@media (max-width: 700px) {\n  .ads2-gal { grid-template-columns: 1fr; }\n  .ads2-body { padding: 32px 18px 44px; }\n  .ads2-t { font-size: 14px; }\n  .ads2-t td, .ads2-t th { padding: 9px 10px; }\n  .ads2-t.kv td:first-child { width: 42%; }\n  .ads2-tw { -webkit-overflow-scrolling: touch; }\n}\n@media (max-width: 640px) {\n  .ads2-hero-in { padding: 34px 18px 38px; }\n  .ads2-h1 { font-size: 25px; }\n  .ads2 h2 { font-size: 22px; }\n  .ads2-tag { font-size: 13px; }\n  .ads2-sub { font-size: 15px; }\n  .ads2-checks { gap: 6px 16px; }\n  .ads2-checks li { font-size: 14px; }\n  .ads2-btn { padding: 12px 24px; font-size: 15px; }\n  .ads2-sec { margin-bottom: 40px; }\n}\n<\/style>\n<div class=\"ads2\">\n<section class=\"ads2-hero\">\n  <img class=\"ads2-hero-img\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3.webp\" sizes=\"100vw\" alt=\"Bulk tool steel bar stock in the Aobo Steel warehouse\" loading=\"eager\" decoding=\"async\">\n  <div class=\"ads2-hero-ov\"><\/div>\n  <div class=\"ads2-hero-scrim\"><\/div>\n  <div class=\"ads2-hero-in\">\n    <h1 class=\"ads2-h1\">4Cr5MoSiV1 Hot Work Tool Steel<\/h1>\n    <p class=\"ads2-tag\"><em>AOBO STEEL &#8211; Trusted Global Tool Steel Supplier<\/em><\/p>\n    <div class=\"ads2-cta popmake-16052\"><a class=\"ads2-btn\" href=\"#\">Send Inquiry Now<\/a><\/div>\n  <\/div>\n<\/section>\n<div class=\"ads2-body\">\n<section class=\"ads2-sec\">\n<p>4Cr5MoSiV1 is a hot-work tool steel grade under the Chinese standard GB\/T 1299. It is a widely used chromium-molybdenum-vanadium (Cr-Mo-V) hot work tool steel, commonly known internationally by designations such as <a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\">H13<\/mark><\/a> (AISI\/ASTM), SKD61 (JIS), 1.2344(DIN), and X40CrMoV5-1 (ISO\/EN\/DIN). This steel grade has excellent strength and toughness, good hot workability, and resistance to thermal fatigue.<\/p>\n<\/section>\n<section class=\"ads2-sec\">\n<h2>1. Chemical Composition (GB\/ T 1299\u20142000)<\/h2>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td>C<\/td><td>Si<\/td><td>Mn<\/td><td>Cr<\/td><td>Mo<\/td><td>V<\/td><td>P<\/td><td>S<\/td><\/tr><\/thead><tbody><tr><td>0.32-0.45<\/td><td>0.80-1.20<\/td><td>0.20-0.50<\/td><td>4.75-5.50<\/td><td>1.10-1.75<\/td><td>0.80-1.20<\/td><td>\u22640.030<\/td><td>\u22640.030<\/td><\/tr><\/tbody><\/table><\/div>\n<\/section>\n<section class=\"ads2-sec\">\n<h2>2. Physical Properties of 4Cr5MoSiV1<\/h2>\n<p><strong>2.1 Critical Point Temperatures<\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td><strong>Critical Point<\/strong><\/td><td><strong>Ac1<\/strong><\/td><td><strong>Ac3<\/strong><\/td><td><strong>Ar1<\/strong><\/td><td><strong>Ar3<\/strong><\/td><td><strong>Ms<\/strong><\/td><td><strong>Mf<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Temperature \/\u00b0C<\/td><td>860<\/td><td>915<\/td><td>775<\/td><td>875<\/td><td>340<\/td><td>215<\/td><\/tr><\/tbody><\/table><\/div>\n<p><strong>2.2 Linear Expansion Coefficient<\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td><strong>Temperature\/\u00b0C<\/strong><\/td><td><strong>20 ~ 100<\/strong><\/td><td><strong>20 ~ 200<\/strong><\/td><td><strong>20 ~ 300<\/strong><\/td><td><strong>20 ~ 400<\/strong><\/td><td><strong>20 ~ 500<\/strong><\/td><td><strong>20 ~ 600<\/strong><\/td><td><strong>20 ~ 700<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Linear Expansion Coefficient \u03b1\/\u00d710\u207b\u2076\u2103\u207b\u00b9<\/td><td>9.1<\/td><td>10.3<\/td><td>11.5<\/td><td>12.2<\/td><td>12.8<\/td><td>13.2<\/td><td>13.5<\/td><\/tr><\/tbody><\/table><\/div>\n<p><strong>2.3 Thermal Conductivity<\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td><strong>Temperature\/\u00b0C<\/strong><\/td><td><strong>250<\/strong><\/td><td><strong>650<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Thermal Conductivity \u03bb\/[W\/(m\u00b7K)]<\/td><td>32.2<\/td><td>28.8<\/td><\/tr><\/tbody><\/table><\/div>\n<p><strong>2.4 Density and Elastic Modulus<\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t kv\"><tbody><tr><td><strong>Density\/(g\/cm\u00b3)<\/strong><\/td><td><strong>Elastic Modulus E\/MPa<\/strong><\/td><\/tr><tr><td>7.8<\/td><td>210 000<\/td><\/tr><\/tbody><\/table><\/div>\n<\/section>\n<section class=\"ads2-sec\">\n<h2>3. Hot Forging Process Specification of 4Cr5MoSiV1<\/h2>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td><strong>Item<\/strong><\/td><td><strong>Heating Temperature\/\u00b0C<\/strong><\/td><td><strong>Initial Forging Temperature\/\u00b0C<\/strong><\/td><td><strong>Final Forging Temperature\/\u00b0C<\/strong><\/td><td><strong>Cooling Method<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Steel Ingot<\/td><td>1140 ~ 1180<\/td><td>1100 ~ 1150<\/td><td>850 ~ 900<\/td><td>Slow Cooling (Sand or Pit Cooling)<\/td><\/tr><tr><td>Steel Billet<\/td><td>1120 ~ 1150<\/td><td>1050 ~ 1100<\/td><td>850 ~ 900<\/td><td>Slow Cooling (Sand or Pit Cooling)<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"ads2-gal\"><figure class=\"ads2-fig\"><img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/4Cr5MoSiV1.avif\" alt=\"4Cr5MoSiV1\"><\/figure><figure class=\"ads2-fig\"><img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H13-STEEL-FLAT-BAR.avif\" alt=\"H13 STEEL\"><figcaption>H13 tool steel<\/figcaption><\/figure><figure class=\"ads2-fig\"><img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/1.2344-round.avif\" alt=\"1.2344\"><\/figure><\/div>\n<div class=\"ads2-cta popmake-16052\"><a class=\"ads2-btn\" href=\"#\">Send Inquiry Now<\/a><\/div>\n<\/section>\n<section class=\"ads2-sec\">\n<h2>4. Heat Treatment of 4Cr5MoSiV1<\/h2>\n<p><strong>4.1 Preheating<\/strong><\/p>\n<p>Preheating Treatment Process Specification for 4Cr5MoSiV1 Steel<\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t kv\"><tbody><tr><td><strong>Pre-heat Treatment Plan<\/strong><\/td><td><strong>Process Parameters<\/strong><\/td><\/tr><tr><td>Post-forging Annealing Process<\/td><td>Heating temperature: 860 ~ 890\u00b0C, hold for 3 ~ 4h, cool to below 500\u00b0C then air cool. Hardness after annealing \u2264229HBW, microstructure is globular pearlite + small amount of carbides.<\/td><\/tr><tr><td>Stress Relief Annealing<\/td><td>Heating temperature: 730 ~ 760\u00b0C, hold for 3 ~ 4h, furnace cool.<\/td><\/tr><\/tbody><\/table><\/div>\n<p>Hardness and Microstructure of 4Cr5MoSiV1 Steel Before and After Annealing<\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td><\/td><td>Before Annealing<\/td><td>After Annealing<\/td><td>Microstructure (Before Annealing)<\/td><td>Microstructure (After Annealing)<\/td><\/tr><\/thead><tbody><tr><td>Indentation Diameter\/mm<\/td><td>\u22482.75<\/td><td>\u22653.9<\/td><td rowspan=\"2\">Sorbite or Martensite<\/td><td rowspan=\"2\">Globular pearlite + small amount of carbides<\/td><\/tr><tr><td>HBW<\/td><td>\u2248500<\/td><td>\u2264241<\/td><\/tr><\/tbody><\/table><\/div>\n<p>4.2 Quenching<\/p>\n<p>Quenching Process Specification for 4Cr5MoSiV1 Steel<\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td>Quenching Temperature\/\u00b0C<\/td><td>Cooling<\/td><td>Hardness HRC<\/td><\/tr><\/thead><tbody><tr><td rowspan=\"2\">1020 ~ 1080<\/td><td>Quenching Coolant<\/td><td>Quenching Coolant Temperature\/\u00b0C<\/td><\/tr><tr><td>Oil or Air<\/td><td>20 ~ 60<\/td><\/tr><\/tbody><\/table><\/div>\n<p>Relationship between Quenching Temperature, Hardness, and Grain Size for 4Cr5MoSiV1 Steel<\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td><strong>Quenching Temperature\/\u00b0C<\/strong><\/td><td><strong>930<\/strong><\/td><td><strong>950<\/strong><\/td><td><strong>980<\/strong><\/td><td><strong>1000<\/strong><\/td><td><strong>1020<\/strong><\/td><td><strong>1040<\/strong><\/td><td><strong>1060<\/strong><\/td><td><strong>1080<\/strong><\/td><td><strong>1100<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong>Hardness HRC<\/strong><\/td><td>50.3<\/td><td>52<\/td><td>53.5<\/td><td>54.8<\/td><td>56.3<\/td><td>57.8<\/td><td>58.2<\/td><td>59.1<\/td><td>59.1<\/td><\/tr><tr><td><strong>Grain Size\/Grade<\/strong><\/td><td>\u2014<\/td><td>11.2<\/td><td>11.1<\/td><td>11.1<\/td><td>11.1<\/td><td>11<\/td><td>10<\/td><td>8<\/td><td>7<\/td><\/tr><\/tbody><\/table><\/div>\n<p><strong>3. Tempering<\/strong><\/p>\n<p>Tempering Process Specification for 4Cr5MoSiV1 Steel<\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td><strong>Purpose<\/strong><\/td><td><strong>Tempering Temperature\/\u00b0C<\/strong><\/td><td><strong>Equipment<\/strong><\/td><td><strong>Cooling<\/strong><\/td><td><strong>Tempering Hardness HRC<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Relieve stress, reduce hardness<\/td><td>560 ~ 580\u00b9<\/td><td>Molten salt bath or air furnace<\/td><td>Air cool<\/td><td>47 ~ 49<\/td><\/tr><\/tbody><\/table><\/div>\n<p>Note: Usually tempered twice. The second tempering temperature is 20\u00b0C lower than the first.<\/p>\n<p>Relationship between Tempering Temperature and Hardness for 4Cr5MoSiV1 Steel<\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td><strong>Tempering Temperature \/\u00b0C<\/strong><\/td><td><strong>Hardness HRC<\/strong><\/td><td><strong>Tempering Temperature \/\u00b0C<\/strong><\/td><td><strong>Hardness HRC<\/strong><\/td><\/tr><\/thead><tbody><tr><td>100<\/td><td>59.0<\/td><td>500<\/td><td>57.5<\/td><\/tr><tr><td>200<\/td><td>57.0<\/td><td>550<\/td><td>53.5<\/td><\/tr><tr><td>300<\/td><td>54.5<\/td><td>600<\/td><td>49.5<\/td><\/tr><tr><td>400<\/td><td>54.5<\/td><td>650<\/td><td>40.0<\/td><\/tr><tr><td>450<\/td><td>57.5<\/td><td>700<\/td><td>30.0<\/td><\/tr><\/tbody><\/table><\/div>\n<p><strong>4. Surface Strengthening Treatment Process Specifications for 4Cr5MoSiV1 Steel<\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><th>Process<\/th><th>Temperature\/\u00b0C<\/th><th>Time\/h<\/th><th>Medium<\/th><th>Diffusion Layer<\/th><th><\/th><\/tr><\/thead><tbody><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><strong>Depth\/mm<\/strong><\/td><td><strong>Microhardness HV<\/strong><\/td><\/tr><tr><td>Nitriding<\/td><td>560<\/td><td>2<\/td><td>50% KNO\u2083 + 50% NaNO\u2083 (mass fraction)<\/td><td>0.04 &#8211; 0.07<\/td><td>640 &#8211; 690<\/td><\/tr><tr><td>Nitriding<\/td><td>580<\/td><td>8<\/td><td>Natural Gas + Ammonia<\/td><td>0.25<\/td><td>835 &#8211; 860<\/td><\/tr><tr><td>Nitriding<\/td><td>530 &#8211; 550<\/td><td>12 &#8211; 20<\/td><td>Ammonia decomposition rate \u03b1 is 30% &#8211; 60%<\/td><td>0.12 &#8211; 0.20<\/td><td>550 &#8211; 760<\/td><\/tr><\/tbody><\/table><\/div>\n<\/section>\n<section class=\"ads2-sec\">\n<h2>5. Mechanical Properties<\/h2>\n<p>4Cr5MoSiV1 (H13) steel is an air-hardening hot-work tool steel. It has good toughness and high strength. Because it can be hardened in air, the quenching deformation and residual stress are small, and the tendency for surface oxidation is also small. It can produce a secondary hardening phenomenon, has good thermal stability, and can resist the erosion of molten aluminum alloy. At a working temperature below 650\u00b0C, it has high ductility, impact toughness, oxidation resistance, thermal fatigue resistance, as well as high creep strength and tensile strength.<\/p>\n<p><strong>5.1 Longitudinal Mechanical Properties at Room Temperature<\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><th>Tempering Temperature\/\u00b0C<\/th><th>After Quenching<\/th><th>200<\/th><th>400<\/th><th>500<\/th><th>520<\/th><th>550<\/th><th>580<\/th><th>600<\/th><th>650<\/th><th>700<\/th><\/tr><\/thead><tbody><tr><td><strong>Hardness HRC<\/strong><\/td><td>56<\/td><td>54<\/td><td>54<\/td><td>55.5<\/td><td>54<\/td><td>52.5<\/td><td>49<\/td><td>45.5<\/td><td>33<\/td><td>28<\/td><\/tr><tr><td><strong>Tensile Strength Rm\/MPa<\/strong><\/td><td>\u2014<\/td><td>\u2014<\/td><td>2040<\/td><td>2100<\/td><td>2080<\/td><td>1980<\/td><td>1780<\/td><td>1650<\/td><td>1180<\/td><td>\u2014<\/td><\/tr><tr><td><strong>Reduction of Area Z (%)<\/strong><\/td><td>\u2014<\/td><td>\u2014<\/td><td>40<\/td><td>34<\/td><td>40<\/td><td>48<\/td><td>53<\/td><td>54<\/td><td>55<\/td><td>\u2014<\/td><\/tr><tr><td><strong>Elongation A (%)<\/strong><\/td><td>\u2014<\/td><td>\u2014<\/td><td>11<\/td><td>11<\/td><td>11.5<\/td><td>12<\/td><td>12.5<\/td><td>14<\/td><td>18<\/td><td>\u2014<\/td><\/tr><tr><td><strong>Impact Toughness ak\/(J\/cm\u00b2)<\/strong><\/td><td>\u2014<\/td><td>\u2014<\/td><td>40<\/td><td>32<\/td><td>35<\/td><td>50<\/td><td>60<\/td><td>70<\/td><td>100<\/td><td>\u2014<\/td><\/tr><\/tbody><\/table><\/div>\n<p><strong>Note:<\/strong> 1020\u00b0C oil quenching, tempered 2 times.<\/p>\n<p><strong>5.2 Fatigue Performance of 4Cr5MoSiV1 Steel<\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td>Test Temperature\/\u00b0C<\/td><td>Room Temperature<\/td><td>540<\/td><\/tr><\/thead><tbody><tr><td><strong>\u03c3\u208b\u2081\/MPa<\/strong><\/td><td>730<\/td><td>510<\/td><\/tr><tr><td><strong>\u03c3\u208b\u2081\u2096\/MPa<\/strong><\/td><td>670<\/td><td>370<\/td><\/tr><\/tbody><\/table><\/div>\n<p><strong>5.3 Longitudinal Impact Toughness of 4Cr5MoSiV1 Steel Bar<sup>1<\/sup><\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td rowspan=\"2\">Tempering Temperature\/\u00b0C<\/td><td rowspan=\"2\">Hardness2 HRC<\/td><td colspan=\"5\">Charpy V-notch impact absorption energy\/J at the following test temperatures<\/td><\/tr><\/thead><tbody><tr><td>-73\u00b0C<\/td><td>21\u00b0C<\/td><td>260\u00b0C<\/td><td>540\u00b0C<\/td><td>595\u00b0C<\/td><\/tr><tr><td>524<\/td><td>54<\/td><td>7<\/td><td>14<\/td><td>27<\/td><td>31<\/td><td>\u2014<\/td><\/tr><tr><td>565<\/td><td>52<\/td><td>7<\/td><td>14<\/td><td>30<\/td><td>34<\/td><td>343<\/td><\/tr><tr><td>607<\/td><td>47<\/td><td>8<\/td><td>24<\/td><td>41<\/td><td>45<\/td><td>43<\/td><\/tr><tr><td>615<\/td><td>43<\/td><td>9.5<\/td><td>24<\/td><td>52<\/td><td>60<\/td><td>57<\/td><\/tr><\/tbody><\/table><\/div>\n<ol>\n<li>Air-cooled from 1010\u00b0C, and secondary tempered, tempered twice at each specified temperature.<\/li>\n\n\n\n<li>Room temperature.<\/li>\n\n\n\n<li>565\u00b0C.<\/li>\n<\/ol>\n<p><strong>5.4 Longitudinal Tensile Properties of 4Cr5MoSiV1 Steel Bar<sup>1<\/sup><\/strong><\/p>\n<div class=\"ads2-tw\"><table class=\"ads2-t data\"><thead><tr><td>Room Temp. Hardness HRC<\/td><td>Test Temperature\/\u00b0C<\/td><td>Tensile Strength Rm\/MPa<\/td><td>Lower Yield Strength Rm\/MPa<\/td><td>Elongation after Fracture A (%)<\/td><td>Reduction of Area Z (%)<\/td><\/tr><\/thead><tbody><tr><td rowspan=\"4\">522<\/td><td>425<\/td><td>1620<\/td><td>1240<\/td><td>13.7<\/td><td>50.6<\/td><\/tr><tr><td>540<\/td><td>1305<\/td><td>1000<\/td><td>13.9<\/td><td>54<\/td><\/tr><tr><td>595<\/td><td>1020<\/td><td>825<\/td><td>17.5<\/td><td>65.4<\/td><\/tr><tr><td>650<\/td><td>450<\/td><td>340<\/td><td>28.9<\/td><td>88.9<\/td><\/tr><tr><td rowspan=\"4\">483<\/td><td>425<\/td><td>1400<\/td><td>1150<\/td><td>15<\/td><td>59.9<\/td><\/tr><tr><td>540<\/td><td>1160<\/td><td>960<\/td><td>17.1<\/td><td>62.4<\/td><\/tr><tr><td>595<\/td><td>940<\/td><td>750<\/td><td>18<\/td><td>68.5<\/td><\/tr><tr><td>650<\/td><td>455<\/td><td>350<\/td><td>33.6<\/td><td>89<\/td><\/tr><tr><td rowspan=\"4\">444<\/td><td>425<\/td><td>1200<\/td><td>1005<\/td><td>17<\/td><td>64.1<\/td><\/tr><tr><td>540<\/td><td>995<\/td><td>820<\/td><td>20.6<\/td><td>70<\/td><\/tr><tr><td>595<\/td><td>827<\/td><td>690<\/td><td>22.6<\/td><td>74<\/td><\/tr><tr><td>650<\/td><td>450<\/td><td>350<\/td><td>28.4<\/td><td>87<\/td><\/tr><\/tbody><\/table><\/div>\n<ol>\n<li>Quenched at 1010\u00b0C (1850\u00b0F) in oil, then tempered to the specified hardness.<\/li>\n\n\n\n<li>Tempered at 527\u00b0C for 2 \u00d7 2 hours.<\/li>\n\n\n\n<li>Tempered at 575\u00b0C for 2 \u00d7 2 hours.<\/li>\n\n\n\n<li>Tempered at 605\u00b0C for 2 \u00d7 2 hours.<\/li>\n<\/ol>\n<\/section>\n<section class=\"ads2-sec\">\n<h2>6. Applications<\/h2>\n<p>4Cr5MoSiV1 steel is widely used in the manufacture of hot extrusion dies and mandrels, hammer forging dies, forging press dies, precision forging dies, and die-casting molds for aluminum, copper, magnesium, and their alloys. The consistency and purity of 4Cr5MoSiV1 directly impact tool life and performance. Factors like precise chemical control, low phosphorus and sulfur levels, and minimal inclusions are critical. <a href=\"https:\/\/aobosteel.com\/what-is-electroslag-remelting-esr\/\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\">Electroslag Remelting (ESR)<\/mark><\/a> can be utilized to produce cleaner, more homogeneous steel for demanding applications that require superior polishability or fatigue resistance.<\/p>\n<div class=\"ads2-cta popmake-16052\"><a class=\"ads2-btn\" href=\"#\">Open RFQ Form<\/a><\/div>\n<\/section>\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Forged 4Cr5MoSiV1 \/ AISI H13 \/ 1.2344 Hot Work Tool Steel Round & Flat Bar\",\n  \"image\": \"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/4Cr5MoSiV1.avif\",\n  \"description\": \"Premium 4Cr5MoSiV1 (AISI H13 \/ DIN 1.2344) Hot Work Tool Steel. Excellent thermal fatigue resistance and toughness for die casting and extrusion. Forged at Aobo Steel factory. ESR grade available. MTC provided.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Aobo Steel\"\n  },\n  \"manufacturer\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Aobo Steel\"\n  },\n  \"sku\": \"AOBO-H13-Bar\",\n  \"mpn\": \"AOBO-H13-MFG\",\n  \"offers\": {\n    \"@type\": \"AggregateOffer\",\n    \"url\": \"https:\/\/aobosteel.com\/4cr5mosiv1-tool-steel\/\",\n    \"priceCurrency\": \"USD\",\n    \"lowPrice\": \"1250\",\n    \"highPrice\": \"1650\",\n    \"offerCount\": \"5\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"itemCondition\": \"https:\/\/schema.org\/NewCondition\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"Aobo Steel\",\n      \"telephone\": \"+86 180 6294 5370\",\n      \"address\": {\n        \"@type\": \"PostalAddress\",\n        \"streetAddress\": \"No. 141 Huangjiawan, Shileishan Village, Xisai District\",\n        \"addressLocality\": \"Huangshi City\",\n        \"addressRegion\": \"Hubei Province\",\n        \"postalCode\": \"435000\",\n        \"addressCountry\": \"CN\"\n      }\n    }\n  }\n}\n<\/script>\n\n\n\n<\/div>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>4Cr5MoSiV1 Hot Work Tool Steel AOBO STEEL &#8211; Trusted Global Tool Steel Supplier Send Inquiry Now 4Cr5MoSiV1 is a hot-work tool steel grade under the Chinese standard GB\/T 1299. It is a widely used chromium-molybdenum-vanadium (Cr-Mo-V) hot work tool steel, commonly known internationally by designations such as H13 (AISI\/ASTM), SKD61 (JIS), 1.2344(DIN), and X40CrMoV5-1 (ISO\/EN\/DIN). [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9864,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"default","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-9843","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.7 (Yoast SEO v28.7) - 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