... it is similar to H13 (ASTM), 1.2344(DIN), SKD61(JIS)Chemical Composition: C 0.39, Si 1.10, Mn 0.30, P ... is similar to M2( ASTM), S6-5-2(DIN), SKH51(JIS)Chemical Composition: C 0.85, Si 0.38, Mn 0.35, ... it is similar to H13 (ASTM), 1.2344(DIN), SKD61(JIS)Chemical Composition: C 0.39, Si 1.10, Mn 0.30, P ... it is similar to H13 (ASTM), 1.2344(DIN), SKD61(JIS)Chemical Composition: C 0.39, Si 1.10, Mn 0.30, P ...