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ASTM A302 Grade D steel
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ASTM A302 Grade D steel

ASTM A302 Grade D steel

ASTM A302 Grade D steel covers manganese-molybdenum and manganese- molybdenum- nickel alloy steel plates intended particularly for welded boiler and other pressure vessels.

ASTM A302 Grade D material chemical composition

Grade C,max Mn P max S max Si Mo
≤1in(25mm),incl >1≤2in.(50mm),incl >2in.(50mm)
Grade D 0.20 0.23 0.25 1.07-1.62 0.035 0.035 0.13-0.45 0.41-0.64

ASTM A302 Grade D steel mechanical properties

Grade Tensile strength,ksi,mpa Yield strength,min,ksi,mpa Elongation in 8in.[200mm],min,% Elongation in 2in.[50mm],min,%
Grade D 80-100[550-690] 50[345] 17 20

ASTM A302 Grade D steel heat treatment:

ASTM A302 Grade D steel plate 2in.[50mm] and under in thickness are normally supplied in the as-rolled condition.plates may be ordered normalized or stress relieved,or both.

ASTM A302 Grade D steel plates over 2in.[50mm] in thickness shall be normalized.

When normalizing ASTM A302 Grade D steel plates 4in.[100mm] or over in thickness,the cooling rate may be accelerated by air blasting or liquid quenching to obtain mechanical properties comparable to those developed by normalizing plates in the lesser thicknesses.

If you need ASTM A302 Grade D steel and ASTM A302 Grade D steel supplier,contact us!

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