The mechanical properties of ASTM A302 pressure vessel steel plate

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ASTM A302 steel, also called ASME SA302 steel, is a kind of low alloy steel specification covers 4 different grades(A, B, C, D), Grade C and D contains chemical composition Ni, with the same thickness, yield and tensile strength of Grade C is the same of Grade B, while elongation rate of grade C is higher. It is manufactured for Pressure Vessel, Boiler, Storage Tanks and Heat Exchanger in Oil, Gas Project.

ASTM A302 Steel Tensile Requirements

Steel Grade Thickness Yield stregnth Tensile strength Elongation
A302 Grade A mm Min Mpa Mpa Min  %
6-50 310 515-655 0.19
50-200 310 515-655 0.15
A302 Grade B 6-50 345 Mpa 550-690 Mpa 0.18
50-200 345 Mpa 550-690 Mpa 0.15
A302 Grade C 6-50 50 [345] 80-100kis [550-690]Mpa 0.17
50-200 - - 0.2

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