High-speed steel grades quenched and tempered hardness HRC flexural strength MPa impact toughness MJ / m? / TD> 600 ℃ HRC Chinese brand name similar to the ISO brand name W18Cr4V T1 HS18-0-1 62-65 3430 0.29 50.5 W6Mo5Cr4V2 M2 HS6-5-2 63-66 3500-4000 0.30-0.40 47-48 W9Mo3Cr4V 64-66 4000-4500 0.35-0.40 W6Mo5Cr4V3 M3 HS6-5-3 65-67 3200 0.25 51.7 W6Mo5Cr4V2Co5 HS6-5-2-5 65- 66 3000 0.30 54 W10Mo4Cr4V3Co10 HS10-4-3-10 67-69 2350 55.5 W2Mo9Cr4V2Co8 HS2-9-2-8 66-68 2700-3800 0.23-0.35 55 W7Mo4Cr4V2Co5 M41 HS7-4-2-5 66-68 2500-3000 0.23-0.35 54 W12Cr4VCo5 HS12-0-1-5 66-68 3000 0.25 54 W6Mo5Cr4V2Al 501 Steel 66-69 3000-4100 0.25-0.30 55-56 110W1.5Mo9.5Cr4VCo8 M42 67-69 2650-3730 0.23-0.29 55.2 W10Mo4Cr4VAl 5F6 Steel 68-69 3010 0.20 54.2
