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ASTM AH36 VS A36 mild steel

ASTM AH36 is under the ASTM A131/A131M standard, ASTM AH36 refers to AH36 shipbuilding steel. Usually the end user has class certification requirement for ASTM AH36 shipbuilding steel. Such as ABS, LR, BV, GL, DNV, RINA, NK, and so on.

Sometimes, ASTM AH36 shipbuilding steel is also short to A36 shipbuilding steel. In this condition, ASTM AH36 steel and A36 steel is totally the same.

However, at most times, ASTM A36 steel means another steel type, it is A36 mild steel. A36 mild steel is for general construction, seldom used for ship building. A36 mild steel strength is lower than ASTM AH36 shipbuilding steel strength.

ASTM AH36 vs. A36 mild steel in chemical composition:

ASTM AH36 vs. A36 carbon steel in mechanical properties:

From above tables about ASTM AH36 VS A36 mild steel in chemical composition and mechanical properties, we can easily understand that A36 mild steel is totally different from ASTM AH36 shipbuilding steel.