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🇺🇸 USA equivalent of

444 / X2CrMoTi18-21.4521

AISI 444S44400REF

Standard: AISI · Source: ASTM A240

Close match

Other international equivalents

CountryStandardGradeMatch
🇪🇺EuropeENX2CrMoTi18-2100%
🇯🇵JapanJISSUS44495%