Comparison of Die Steel
ตารางเทียบเกรดเหล็กแม่พิมพ์
Classification Steel Type by Standard Hardness used
(HRC)
Steel Grade by Manufacturers Supply by Intertool
JIS AISI DIN Hitachi Daido Aichi Sanyo Nippon
 Koshuha
Nachi-
Fujikoshi
Uddeholm Bohler Sorel Forge
Tool steel SKS93     55-62 YCS3 YK30 SK301 QK3M K3M SK3M        
SKS3 O1 1.251 SGT GOA SKS3 QKS3 KS3 SKS3 ARNE K460   ✓
SKS31 O7 1.2519   G031 SKS31   KS31          
SKD1 D3 1.208 CRD DC1 SKD1 QC1 KD1   SVERKER3 K100    
SKD11 D2 1.2379 SLD DC11 SKD11 QC11 KD11 CDS11 SVERKER21 K110   ✓
SKD11
(improved)
    SLD8 DC53 AUD15 QCM8 KD11S MDS9 SLEIPNER K340   ✓
SKD12 A2 1.2363 SCD DC12 SKD12 QC12 KD12 CDS12 RIGOR K305    
SKD61 H13 1.2344 44-52 DAC DHA1 SKD61 QD61 KDA HDS61   W302    
SKT4 L6 1.2714 45-55 DM DHA1   QT41            
High-speed
tool steel
SKH51 M2 1.3343 62-66 YXM1 MH51   QH51 H51 SKH9 KM2 S600   ✓
SKH55 M35 1.3243 63-67 YXM4 MH55     HM35 HM35 KM35 S705    
SKH57 M48 1.3207 64-68 XVC5 MH8     MV10 FM38V   S700    
Powdered
High-speed tool steel
SKH53 M3 1.3344 63-67 YXM27     SPM23   FAX31 ASP23 S790    
SKH40 M3:1+Co   HAP40 DEX40       FAX38 ASP30 S590   ✓
SKH54 M4 1.3244 XVC11             S690
S693
  ✓
others     66-69 HAP50 DEX60                
      69-72 HAP72 DEX80   SPM60   FAX60 ASP60      
Machinery Steel SCM415
SCM21
4115 1.7262 55-60
(case hardness)
                  ✓
SCM4 4140 1.7225 28-32 SCM440             V320   ✓
Bearing steel SUJ2 52100 1.3505 60-66       SUJ2           ✓
Mild Steel SS400
(SS41)
  S235JR not heat treated                   ✓
Carbon Steel S45C 1045 C45 varies upon usage                   ✓
S50C 1050 C50                   ✓
S55C 1055 C55                 SF1 ✓
Pre-hardened steel   P20 1.2311 28-34   PDS5
NAK55
AM20             ✓
  P20+Ni 1.2738 28-34 HPM7             M238   ✓
NAK80 P21   36-42 HPM50 NAK80           M461