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🇯🇵 Japan equivalent of

42CrMo41.7225

SCM44096%

Standard: JIS · Source: JIS G4053

Very close match, minor Si/Mn differences

Other international equivalents

CountryStandardGradeMatch
🇺🇸USAAISIAISI 4140REF
🇪🇺EuropeEN42CrMo4100%
🇫🇷FranceAFNOR42CD498%
🇬🇧United KingdomBS708M40 / EN1997%
🇨🇳ChinaGB42CrMo93%