... 0.75, P≤0.030, S≤0.030, Cr 5.10, Mo 1.10, V 0.30Annealed Hardness: HB≤235Heat treatment temp ... shape5. 9CrWMn , it is similar to O1 Modify ( ASTM), 1.2510(DIN)), SKS3(JIS)Chemical Composition: C 0.93, Si ... 0.40, Mn 1.20, P≤0.030, S≤0. 030, Cr 0.50, ... mold, ornaments pressing mold6. CrWMn , it is similar to 1.2419(DIN)), SKS31(JIS)Chemical Composition: C 0.98, Si ...