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🇨🇳 China equivalent of

51CrV41.8159

50CrVA93%

Standard: GB · Source: GB/T 1222

Chinese spring steel

Other international equivalents

CountryStandardGradeMatch
🇺🇸USAAISIAISI 6150REF
🇪🇺EuropeEN51CrV4100%
🇪🇺EuropeDIN50CrV4 (old)99%
🇯🇵JapanJISSUP1090%