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ASTM A302 Grade A steel
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ASTM A302 Grade A steel

ASTM A302 Grade A steel

ASTM A302 Grade A steel specification for pressure vessel plates,alloy steel,manganese-molybdenum and manganese-molybdenum-nickel.

ASTM A302 Grade A alloy steel plates maximum thickness is limited only by the capacity of the chemical composition to meet the specified mechanical property requirements.the minimum thickness is limited to 0.25 in.[6.5mm].

ASTM A302 Grade A material chemical composition

Grade C,max Mn P max S max Si Mo
≤1in(25mm),incl >1≤2in.(50mm),incl >2in.(50mm)
Grade A 0.20 0.23 0.25 0.87-1.41 0.035 0.035 0.13-0.45 0.41-0.64

ASTM A302 Grade A pressure vessel steels mechanical properties

Grade Tensile strength,ksi,mpa Yield strength,min,ksi,mpa Elongation in 8in.[200mm],min,% Elongation in 2in.[50mm],min,%
Grade A 75-95[515-655] 45[310] 15 19

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