(1)CARBON  STEEL:
JIS               AISI / SAE
S45C           1045
S50C           1050
S60C / S65C      1065 
S70C           1070
S75C           1075

(2)CARBON  TOOL  STEEL:
JIS                    AISI / SAE
SK85 ( SK5 )    1085 
SK95 ( SK4 )    1095

(3)ALLOY TOOL STEEL:
JIS
SKS51M

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Looking forward to hearing from you soon.