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.aobo-card-note,.entry-content[class] .card-desig,.entry-content[class] .k,.entry-content[class] .v,.entry-content[class] .note,.entry-content[class] .aobo-note{font-family: var(--ds-font-head) !important;font-size: 15px !important;line-height: 1.6 !important;font-weight: 400 !important}.entry-content[class] .ht-spec-label,.entry-content[class] .idx,.entry-content[class] .k{font-weight: 700 !important}.entry-content[class] .aobo-note,.entry-content[class] .note{font-family: var(--ds-font-body) !important;color: var(--ds-muted) !important}.entry-content[class] .chip{font-family: var(--ds-font-head) !important;font-size: 13px !important;font-weight: 700 !important}.entry-content[class] .kicker,.entry-content[class] .eyebrow,.entry-content[class] .aobo-eyebrow{display: inline-flex !important;align-items: center;gap: 7px;margin: 0 0 14px !important;padding: 6px 14px !important;border: 1px solid var(--ds-border) !important;border-radius: 999px !important;background: #ffffff !important;color: var(--ds-blue) !important;font-family: var(--ds-font-head) !important;font-size: 13px !important;font-weight: 700 !important;letter-spacing: 0 !important;text-transform: none !important}@media (max-width: 760px){.entry-content[class] h1{font-size: clamp(22px,6.4vw,min(34px,var(--h1-max,34px))) !important}.entry-content[class] h2{font-size: 25px !important}.entry-content[class] h3{font-size: 20px !important}.entry-content[class] h4{font-size: 17px !important}.entry-content[class] p,.entry-content[class] li{font-size: 16px !important}.entry-content[class] table th,.entry-content[class] table td{font-size: 14px !important;padding: 11px 12px !important}.entry-content[class] .aobo-hero{padding: 30px 22px}.entry-content[class] .aobo-final-cta{padding: 26px 22px}.entry-content[class] .aobo-final-cta .aobo-btn{width: 100%}}\n<\/style>\n<section class=\"aobo-ht-ref ts-props\">\n<div class=\"aobo-wrap\">\n<div class=\"ts-hero\">\n<div class=\"ts-hero-top\">\n<div class=\"ts-kicker\"><span><\/span>Mold and Tool Steel | Brand Equivalents | ASSAB, BOHLER, DAIDO, HITACHI, THYSSEN<\/div>\n<h1 style=\"--h1-max:46px\">Imported Mold Steel Brand Cross-Reference to AISI Grades<\/h1>\n<p>Every mill sells mold steel under its own brand code, and a die shop that has to replace a worn block needs to know which AISI grade sits behind that code. This page maps the brand grades of the main European and Japanese mills to the AISI equivalent printed for them, and adds the delivery hardness the mill supplies. Cold work, hot work, plastic mold and high speed grades are covered in four tables. The AISI number is the one to compare when a drawing calls out <a href=\"https:\/\/aobosteel.com\/d2-tool-steel\/\">D2<\/a>, <a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\">H13<\/a>, <a href=\"https:\/\/aobosteel.com\/o1-tool-steel\/\">O1<\/a> or <a href=\"https:\/\/aobosteel.com\/p20-tool-steel\/\">P20<\/a> and the quotation comes back with a mill code instead.<\/p><\/div>\n<div class=\"ts-tool-area\">\n\n<h2 class=\"ts-h2\">How to read the tables<\/h2>\n<p class=\"ts-p\">The first column is the AISI grade that the imported brand grade is equivalent to. Where the source also prints a JIS or a Chinese standard equivalent, both are given in the same cell, because a buyer who works to a Japanese or a Chinese drawing needs that half of the cross reference as much as the AISI number. The grade code is the mill&#8217;s own designation and it is the string that appears on the mill certificate, so it is the one to quote when the order is placed. Delivery hardness is the hardness the steel arrives at, normally in HBW, and HRC, HS or HV is shown where the mill specifies a different scale. Grade groups marked as having no AISI equivalent are special grades that do not sit on an AISI number.<\/p>\n<p class=\"ts-p\">The brands covered are ASSAB and its parent Uddeholm grades, BOHLER, DAIDO, HITACHI, THYSSEN and its GS series, SAARSTAHL, DORRENBERG, NKS, EDEL, SOREL, USINOR and INDUSTEEL, and SINTO.<\/p>\n\n<h2 class=\"ts-h2\">Cold work mold steel brands<\/h2>\n<p class=\"ts-p\">Cold work brands are grouped around the O series, the A2 grade and the D series. The D2 group is the longest because almost every mill builds a 12 percent chromium cold work steel against it, and <a href=\"https:\/\/aobosteel.com\/d3-tool-steel\/\">D3<\/a> and <a href=\"https:\/\/aobosteel.com\/d6-tool-steel\/\">D6<\/a> follow the same pattern with more and less carbon.<\/p>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:720px;\">\n<thead><tr><th>AISI equivalent<\/th><th>Mill \/ brand<\/th><th>Grade code<\/th><th>Delivery hardness<\/th><\/tr><\/thead>\n<tbody>\n<tr><td class=\"ts-grade\">O1 (JIS SKS3, GB\/YB 9CrWMn)<\/td><td>ASSAB<\/td><td>DF-2<\/td><td class=\"ts-num\">190<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1 (JIS SKS3, GB\/YB 9CrWMn)<\/td><td>ASSAB<\/td><td>DF-3<\/td><td class=\"ts-num\">190<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1 (JIS SKS3, GB\/YB 9CrWMn)<\/td><td>BOHLER<\/td><td>K460<\/td><td class=\"ts-num\">\u2264225<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1 (JIS SKS3, GB\/YB 9CrWMn)<\/td><td>DORRENBERG<\/td><td>RS2510<\/td><td class=\"ts-num\">230<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1 (JIS SKS3, GB\/YB 9CrWMn)<\/td><td>DAIDO<\/td><td>GOA<\/td><td class=\"ts-num\">217<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1 (JIS SKS3, GB\/YB 9CrWMn)<\/td><td>HITACHI<\/td><td>SGT<\/td><td class=\"ts-num\">190<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1 (JIS SKS3, GB\/YB 9CrWMn)<\/td><td>SAARSTAHL<\/td><td>GS2510<\/td><td class=\"ts-num\">230<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1 (JIS SKS3, GB\/YB 9CrWMn)<\/td><td>THYSSEN<\/td><td>GS-510<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">O2 (GB 9Mn2V)<\/td><td>THYSSEN<\/td><td>GS842<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">A2 (JIS SKD12, GB Cr5Mo1V)<\/td><td>ASSAB<\/td><td>XW-10<\/td><td class=\"ts-num\">215<\/td><\/tr>\n<tr><td class=\"ts-grade\">A2 (JIS SKD12, GB Cr5Mo1V)<\/td><td>THYSSEN<\/td><td>GS-363<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>ASSAB<\/td><td>XW-41<\/td><td class=\"ts-num\">210<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>ASSAB<\/td><td>XW-42<\/td><td class=\"ts-num\">210<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>BOHLER<\/td><td>K100<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>DAIDO<\/td><td>DC11<\/td><td class=\"ts-num\">255<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>DAIDO<\/td><td>DC53<\/td><td class=\"ts-num\">255<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>DORRENBERG<\/td><td>RS2379<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>DORRENBERG<\/td><td>RS2436<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>HITACHI<\/td><td>SLD<\/td><td class=\"ts-num\">210<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>HITACHI<\/td><td>SLD8<\/td><td class=\"ts-num\">210<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>SAARSTAHL<\/td><td>GS2379<\/td><td class=\"ts-num\">255<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>THYSSEN<\/td><td>GS-379<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>THYSSEN<\/td><td>GS-821ESR<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>NKS<\/td><td>KD21<\/td><td class=\"ts-num\">255<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2 (JIS SKD10, GB\/YB Cr12Mo1V1)<\/td><td>NKS<\/td><td>KD11S<\/td><td class=\"ts-num\">255<\/td><\/tr>\n<tr><td class=\"ts-grade\">D3 (JIS SKD1, GB Cr12)<\/td><td>BOHLER<\/td><td>K110<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">D3 (JIS SKD1, GB Cr12)<\/td><td>THYSSEN<\/td><td>GS-080<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">D6<\/td><td>ASSAB<\/td><td>XW-5<\/td><td class=\"ts-num\">240<\/td><\/tr>\n<tr><td class=\"ts-grade\">D6<\/td><td>BOHLER<\/td><td>K107<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">D6<\/td><td>THYSSEN<\/td><td>GS-436<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">6F7<\/td><td>THYSSEN<\/td><td>GS-767<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, &#23454;&#29992;&#27169;&#20855;&#26448;&#26009;&#19982;&#28909;&#22788;&#29702;&#36895;&#26597;&#25163;&#20876;, Table 10-11, imported cold work mold steel grades and applications, printed pages 630 to 632.<\/em><\/p>\n\n<h2 class=\"ts-h2\">Hot work mold steel brands<\/h2>\n<p class=\"ts-p\">Hot work brands sit on the H10, H11 and H13 numbers, with H13 carrying by far the most mill equivalents because it is the standard die casting and extrusion grade. The H10A and H11 groups below are the lower chromium end of the family, and the group with no AISI equivalent is a molybdenum hot work grade that the mill lists outside the AISI numbers.<\/p>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:720px;\">\n<thead><tr><th>AISI equivalent<\/th><th>Mill \/ brand<\/th><th>Grade code<\/th><th>Delivery hardness<\/th><\/tr><\/thead>\n<tbody>\n<tr><td class=\"ts-grade\">H10 (GB 4Cr3Mo3SiV)<\/td><td>THYSSEN<\/td><td>GS-365<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H10A<\/td><td>BOHLER<\/td><td>W321<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>THYSSEN<\/td><td>GS-885<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H11 (GB 4Cr5MoSiV)<\/td><td>ASSAB<\/td><td>VD11<\/td><td class=\"ts-num\">180<\/td><\/tr>\n<tr><td class=\"ts-grade\">H11 (GB 4Cr5MoSiV)<\/td><td>BOHLER<\/td><td>W300VMR<\/td><td class=\"ts-num\">\u2264220<\/td><\/tr>\n<tr><td class=\"ts-grade\">H11 (GB 4Cr5MoSiV)<\/td><td>THYSSEN<\/td><td>GS-343<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>ASSAB<\/td><td>8402<\/td><td class=\"ts-num\">185<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>ASSAB<\/td><td>8407ESR<\/td><td class=\"ts-num\">185<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>BOHLER<\/td><td>W302<\/td><td class=\"ts-num\">\u2264225<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>DAIDO<\/td><td>DHA1\uff08HI\uff09<\/td><td class=\"ts-num\">annealed 229<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>EDEL<\/td><td>2344<\/td><td class=\"ts-num\">210<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>HITACHI<\/td><td>DAC<\/td><td class=\"ts-num\">186<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>SAARSTAHL<\/td><td>GS-2344<\/td><td class=\"ts-num\">180-220<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>SAARSTAHL<\/td><td>GS-2344 S.ESR<\/td><td class=\"ts-num\">180-220<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>DORRENBERG<\/td><td>RS2344<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>DORRENBERG<\/td><td>RS2344ESR<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>THYSSEN<\/td><td>GS-344<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>THYSSEN<\/td><td>GS-344ESR<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>THYSSEN<\/td><td>GS-344HT<\/td><td class=\"ts-num\">\u2264170<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>THYSSEN<\/td><td>GS344 RTSuper<\/td><td class=\"ts-num\">\u2264170<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>THYSSEN<\/td><td>GS-344M<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>THYSSEN<\/td><td>GS344 RTSuper<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>ASSAB<\/td><td>HOTVAR<\/td><td class=\"ts-num\">210<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>ASSAB<\/td><td>QRO-90<\/td><td class=\"ts-num\">180<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>ASSAB<\/td><td>DIEVAR<\/td><td class=\"ts-num\">160<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>BOHLER<\/td><td>W303ISO BLOC<\/td><td class=\"ts-num\">\u2264229<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>BOHLER<\/td><td>W720ISO BLOC<\/td><td class=\"ts-num\">annealed<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>DAIDO<\/td><td>DH2F<\/td><td class=\"ts-num\">pre-hardened 37- 41HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>DAIDO<\/td><td>DH31-S<\/td><td class=\"ts-num\">annealed \u2264235 HBW<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>THYSSEN<\/td><td>GS787 ESR<\/td><td class=\"ts-num\">\u2264245<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>THYSSEN<\/td><td>GS999<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>NKS<\/td><td>KDA1<\/td><td class=\"ts-num\">229<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13 (JIS SKD61, GB\/YB 4Cr5MoSiV1)<\/td><td>NKS<\/td><td>KDA1S<\/td><td class=\"ts-num\">229<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, &#23454;&#29992;&#27169;&#20855;&#26448;&#26009;&#19982;&#28909;&#22788;&#29702;&#36895;&#26597;&#25163;&#20876;, Table 10-12, imported hot work mold steel grades and applications, printed pages 632 to 634.<\/em><\/p>\n\n<h2 class=\"ts-h2\">Plastic mold steel brands<\/h2>\n<p class=\"ts-p\">Plastic mold brands cover the P series and the 420 stainless molds. The P20 group is the pre-hardened workhorse and most of its equivalents are supplied pre-hardened in the 28 to 38 HRC range, which is why so many of the hardness values in that group carry an HRC figure instead of an HBW number. The 420 grades are the corrosion resistant molds, and <a href=\"https:\/\/aobosteel.com\/420-stainless-steel\/\">420 stainless steel<\/a> and <a href=\"https:\/\/aobosteel.com\/440c-stainless-steel\/\">440C stainless steel<\/a> are the two numbers most often called out in that group.<\/p>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:720px;\">\n<thead><tr><th>AISI equivalent<\/th><th>Mill \/ brand<\/th><th>Grade code<\/th><th>Delivery hardness<\/th><\/tr><\/thead>\n<tbody>\n<tr><td class=\"ts-grade\">6F3<\/td><td>THYSSEN<\/td><td>GS714<\/td><td class=\"ts-num\">32-36HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P2<\/td><td>THYSSEN<\/td><td>GS-162<\/td><td class=\"ts-num\">\u2264210<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>ASSAB<\/td><td>ASSAB618<\/td><td class=\"ts-num\">290-330<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>ASSAB<\/td><td>718S<\/td><td class=\"ts-num\">290-330<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>ASSAB<\/td><td>718H<\/td><td class=\"ts-num\">330-370<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>BOHLER<\/td><td>M201<\/td><td class=\"ts-num\">pre-hardened<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>BOHLER<\/td><td>M202<\/td><td class=\"ts-num\">pre-hardened<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>BOHLER<\/td><td>M238<\/td><td class=\"ts-num\">pre-hardened<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DORRENBERG<\/td><td>RS323<\/td><td class=\"ts-num\">240-300<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DAIDO<\/td><td>PDS-5<\/td><td class=\"ts-num\">29-33HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DAIDO<\/td><td>PX88<\/td><td class=\"ts-num\">pre-hardened 30- 33HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DAIDO<\/td><td>PX4<\/td><td class=\"ts-num\">pre-hardened 30- 33HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DAIDO<\/td><td>PX5<\/td><td class=\"ts-num\">pre-hardened 30- 33HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>EDEL<\/td><td>318<\/td><td class=\"ts-num\">29-34HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>EDEL<\/td><td>2311<\/td><td class=\"ts-num\">30-35HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>HITACHI<\/td><td>HPM7<\/td><td class=\"ts-num\">310-340<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DORRENBERG<\/td><td>RS2738<\/td><td class=\"ts-num\">300-350<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DORRENBERG<\/td><td>RS2311<\/td><td class=\"ts-num\">280-325<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DORRENBERG<\/td><td>RS2312<\/td><td class=\"ts-num\">280-325<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>DORRENBERG<\/td><td>RS638<\/td><td class=\"ts-num\">250-280<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>SAARSTAHL<\/td><td>GS738<\/td><td class=\"ts-num\">300-350<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>SAARSTAHL<\/td><td>GS2311<\/td><td class=\"ts-num\">300-350<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>SAARSTAHL<\/td><td>GS2312<\/td><td class=\"ts-num\">280-325<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>SAARSTAHL<\/td><td>GS638<\/td><td class=\"ts-num\">270-300<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>SAARSTAHL<\/td><td>GS688<\/td><td class=\"ts-num\">250-320<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>SOREL<\/td><td>CSM-2<\/td><td class=\"ts-num\">31-34HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>SOREL<\/td><td>P-20M<\/td><td class=\"ts-num\">29-35HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>THYSSEN<\/td><td>GS-P20M<\/td><td class=\"ts-num\">28-32HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>THYSSEN<\/td><td>GS-711<\/td><td class=\"ts-num\">35-38HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>THYSSEN<\/td><td>GS-738<\/td><td class=\"ts-num\">32-35HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>THYSSEN<\/td><td>GS-318<\/td><td class=\"ts-num\">28-30HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>THYSSEN<\/td><td>GS-312<\/td><td class=\"ts-num\">29-33HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20 (GB SM3Cr2Mo)<\/td><td>USINOR \/ INDUSTEEL<\/td><td>SP300<\/td><td class=\"ts-num\">300<\/td><\/tr>\n<tr><td class=\"ts-grade\">P21 (GB 25CrNi3MoAl)<\/td><td>DAIDO<\/td><td>NAK55 VESR<\/td><td class=\"ts-num\">37-43HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P21 (GB 25CrNi3MoAl)<\/td><td>HITACHI<\/td><td>CENAI \uff08ESR\uff09<\/td><td class=\"ts-num\">38-42HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P21 (GB 25CrNi3MoAl)<\/td><td>HITACHI<\/td><td>HPM50<\/td><td class=\"ts-num\">36-41HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P21 (GB 25CrNi3MoAl)<\/td><td>THYSSEN<\/td><td>GS-808 VAR<\/td><td class=\"ts-num\">38-42HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P21 (GB 25CrNi3MoAl)<\/td><td>USINOR \/ INDUSTEEL<\/td><td>SP400<\/td><td class=\"ts-num\">37-41HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P21 (GB 25CrNi3MoAl)<\/td><td>NKS<\/td><td>KAP88<\/td><td class=\"ts-num\">38-41HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">P21 (GB 25CrNi3MoAl)<\/td><td>DORRENBERG<\/td><td>RS80<\/td><td class=\"ts-num\">380-420<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>ASSAB<\/td><td>168RAM AX-S<\/td><td class=\"ts-num\">340<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>ASSAB<\/td><td>CORRAX S336<\/td><td class=\"ts-num\">32HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>ASSAB<\/td><td>S136ESR<\/td><td class=\"ts-num\">215<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>ASSAB<\/td><td>S136HESR<\/td><td class=\"ts-num\">290-330<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>BOHLER<\/td><td>M300ESR<\/td><td class=\"ts-num\">pre-hardened<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>BOHLER<\/td><td>M310ESR<\/td><td class=\"ts-num\">\u2264225<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>BOHLER<\/td><td>M310HESR<\/td><td class=\"ts-num\">pre-hardened<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>BOHLER<\/td><td>M330VMR<\/td><td class=\"ts-num\">\u2264240<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>DORRENBERG<\/td><td>RS2316<\/td><td class=\"ts-num\">235-250<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>DORRENBERG<\/td><td>RS2083<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>DORRENBERG<\/td><td>RS2083H<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>DORRENBERG<\/td><td>RS2316 ESR<\/td><td class=\"ts-num\">260-310<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>DAIDO<\/td><td>440C<\/td><td class=\"ts-num\">269<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>DAIDO<\/td><td>S-STAR ESR<\/td><td class=\"ts-num\">30-34 HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>EDEL<\/td><td>2316<\/td><td class=\"ts-num\">235-250<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>EDEL<\/td><td>2316H<\/td><td class=\"ts-num\">290-330<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>HITACHI<\/td><td>HPM38<\/td><td class=\"ts-num\">285-320<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>SAARSTAHL<\/td><td>GS-2083<\/td><td class=\"ts-num\">215-240<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>SAARSTAHL<\/td><td>GS-2083H<\/td><td class=\"ts-num\">280-310<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>SAARSTAHL<\/td><td>GS-2316<\/td><td class=\"ts-num\">260-310<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>THYSSEN<\/td><td>GS-083<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>THYSSEN<\/td><td>GS-083 ESR<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>THYSSEN<\/td><td>GS-083H<\/td><td class=\"ts-num\">290-340<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>THYSSEN<\/td><td>GS-128H<\/td><td class=\"ts-num\">38-42HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>THYSSEN<\/td><td>GS083 VAR<\/td><td class=\"ts-num\">\u2264230<\/td><\/tr>\n<tr><td class=\"ts-grade\">420 (JIS SUS420J2, GB\/YB 30Gr13)<\/td><td>THYSSEN<\/td><td>GS-316<\/td><td class=\"ts-num\">28-32HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>ASSAB<\/td><td>635<\/td><td class=\"ts-num\">200<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>ASSAB<\/td><td>S336<\/td><td class=\"ts-num\">32HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>ASSAB<\/td><td>OPTIMAX<\/td><td class=\"ts-num\">200<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>BOHLER<\/td><td>M340<\/td><td class=\"ts-num\">\u2264260<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>DORRENBERG<\/td><td>RS80<\/td><td class=\"ts-num\">380-420<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>DAIDO<\/td><td>PXZ<\/td><td class=\"ts-num\">pre-hardened 27-34HRC<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>HITACHI<\/td><td>HPM38<\/td><td class=\"ts-num\">48-55HS<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>SINTO<\/td><td>PORCERAX II<\/td><td class=\"ts-num\">&amp;#8804;450 HV<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>THYSSEN<\/td><td>GS-316<\/td><td class=\"ts-num\">265-325<\/td><\/tr>\n<tr><td class=\"ts-grade\">No AISI equivalent<\/td><td>THYSSEN<\/td><td>GS-316ESR<\/td><td class=\"ts-num\">265-325<\/td><\/tr>\n<tr><td class=\"ts-grade\">6F7<\/td><td>THYSSEN<\/td><td>GS-767<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">440<\/td><td>THYSSEN<\/td><td>GS361ESR<\/td><td class=\"ts-num\">\u2264265<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, &#23454;&#29992;&#27169;&#20855;&#26448;&#26009;&#19982;&#28909;&#22788;&#29702;&#36895;&#26597;&#25163;&#20876;, Table 10-13, imported plastic mold steel grades and applications, printed pages 634 to 640.<\/em><\/p>\n\n<h2 class=\"ts-h2\">High speed steel brands<\/h2>\n<p class=\"ts-p\">Only two high speed numbers are listed in the source for the imported brands, and both are the molybdenum grades that dominate cutting tool work. <a href=\"https:\/\/aobosteel.com\/m2-tool-steel\/\">M2<\/a> is the general purpose grade and <a href=\"https:\/\/aobosteel.com\/m42-tool-steel\/\">M42<\/a> is the cobalt grade for higher red hardness.<\/p>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:720px;\">\n<thead><tr><th>AISI equivalent<\/th><th>Mill \/ brand<\/th><th>Grade code<\/th><th>Delivery hardness<\/th><\/tr><\/thead>\n<tbody>\n<tr><td class=\"ts-grade\">M2 (JIS SKH51, GB\/YB W6Mo5Cr4V2)<\/td><td>ASSAB<\/td><td>KM-2<\/td><td class=\"ts-num\">260<\/td><\/tr>\n<tr><td class=\"ts-grade\">M2 (JIS SKH51, GB\/YB W6Mo5Cr4V2)<\/td><td>BOHLER<\/td><td>S600<\/td><td class=\"ts-num\">240-300<\/td><\/tr>\n<tr><td class=\"ts-grade\">M2 (JIS SKH51, GB\/YB W6Mo5Cr4V2)<\/td><td>DAIDO<\/td><td>MH51<\/td><td class=\"ts-num\">annealed \u2264255<\/td><\/tr>\n<tr><td class=\"ts-grade\">M2 (JIS SKH51, GB\/YB W6Mo5Cr4V2)<\/td><td>THYSSEN<\/td><td>GS-388<\/td><td class=\"ts-num\">\u2264250<\/td><\/tr>\n<tr><td class=\"ts-grade\">M42 (JIS SKH59, GB W2Mo9Cr4VCo8)<\/td><td>BOHLER<\/td><td>S500<\/td><td class=\"ts-num\">240-300<\/td><\/tr>\n<tr><td class=\"ts-grade\">M42 (JIS SKH59, GB W2Mo9Cr4VCo8)<\/td><td>THYSSEN<\/td><td>GS-247<\/td><td class=\"ts-num\">\u2264300<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, &#23454;&#29992;&#27169;&#20855;&#26448;&#26009;&#19982;&#28909;&#22788;&#29702;&#36895;&#26597;&#25163;&#20876;, Table 10-14, imported high speed steel grades and applications, printed pages 640.<\/em><\/p>\n\n<h2 class=\"ts-h2\">Notes on the data<\/h2>\n<p class=\"ts-p\">The source prints the Chinese standard equivalent of the 420 grades as 30Gr13. The standard designation of that grade is 30Cr13 and that is the form printed in the tables above. The source also prints the H13 group equivalent as 4Cr5MoSiV1 and the H11 equivalent as 4Cr5MoSiV, both of which are written here without the line break hyphens that the printed table carries.<\/p>\n<p class=\"ts-p\">A small number of grades are printed more than once in the source, either inside one table or in two tables. THYSSEN GS-083H appears twice in the 420 group with the same 290 to 340 HBW figure, the DAIDO NAK55 ESR entry appears twice in the P21 group with the same hardness, and THYSSEN GS-767 is listed in both the cold work and the plastic mold table because the mill markets it for both duties. Duplicate rows are shown once. No value was changed, and the brand codes are reproduced as printed, including the spacing used by the source.<\/p>\n<p class=\"ts-p\">Bare numbers in the hardness column are HBW, following the unit printed in the source column heading. Values carrying HRC, HS or HV are on that scale, and pre-hardened or annealed entries are the delivery condition the mill states where no single number is given.<\/p>\n<p class=\"ts-source\">Compiled from &#23454;&#29992;&#27169;&#20855;&#26448;&#26009;&#19982;&#28909;&#22788;&#29702;&#36895;&#26597;&#25163;&#20876;, Tables 10-11 to 10-14, printed pages 630 to 640. Every grade, code and hardness figure was read from the searchable text layer of the file and the group boundaries were checked against the printed pages. The tables are a reference summary of published mill practice rather than an Aobo Steel specification, so confirm the grade and the supply condition with the mill certificate before an order is placed against a brand code.<\/p>\n<div class=\"ts-dl\">\n  <div class=\"ts-dl-txt\"><strong>Imported mold steel brand cross-reference, printable PDF<\/strong>\n  The four tables on this page, with the AISI equivalent, the mill, the grade code and the delivery hardness for every brand grade, in one PDF with our contact details.<\/div>\n  <a class=\"ts-dl-btn\" href=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/Aobo-Steel-Imported-Mold-Steel-Brand-Cross-Reference.pdf\" download>\n    <svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M12 3v12m0 0 4.5-4.5M12 15l-4.5-4.5M4 20h16\"\/><\/svg>\n    Download PDF\n  <\/a>\n<\/div>\n<\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"<p>Mold and Tool Steel | Brand Equivalents | ASSAB, BOHLER, DAIDO, HITACHI, THYSSEN Imported Mold Steel Brand Cross-Reference to AISI Grades Every mill sells mold steel under its own brand code, and a die shop that has to replace a worn block needs to know which AISI grade sits behind that code. This page maps [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"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":"","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-20612","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.6 (Yoast SEO v28.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Imported Mold Steel Brand Cross Reference | ASSAB, BOHLER to AISI<\/title>\n<meta name=\"description\" content=\"Brand grade cross reference for imported mold steels. 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