... (GB), it is similar to H21 (ASTM), 1.2581 (DIN), SKD5 (JIS)4. W6Mo5Cr4V2 (GB), it is similar to M2( ASTM ... 0.030, S≤0.030, Cr 4.10, W 6.00, Mo 4.80 V 1.85Annealed Hardness: HB≤255Heat treatment temp ... (GB), it is similar to H21 (ASTM), 1.2581 (DIN), SKD5 (JIS)4. W6Mo5Cr4V2 (GB), it is similar to M2( ... (GB), it is similar to H21 (ASTM), 1.2581 (DIN), SKD5 (JIS)4. W6Mo5Cr4V2 (GB), it is similar to M2( ...