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🇯🇵 Japan equivalent of

34CrNiMo61.6582

SNCM43988%

Standard: JIS · Source: JIS G4103

Japanese Ni-Cr-Mo steel, slightly different composition

Other international equivalents

CountryStandardGradeMatch
🇺🇸USAAISIAISI 4340REF
🇪🇺EuropeEN34CrNiMo6100%
🇨🇳ChinaGB34CrNiMo695%
🇬🇧United KingdomBS817M40 / EN2493%