A588 Grade A steel specification,ASTM A588 Grade A material chemical composition

Posted:2014-11-30 22:21:13

ASTM A588 Grade A steel Specification for High-Strength Low-Alloy Structural Steel, up to 50 ksi [345 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance.

ASTM A588 Grade A specification covers high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction but intended primarily for use in welded bridges and buildings where savings in weight or added durability are important.

ASTM A588 Grade A material chemical composition: max

Grade	C	Mn	P	S	Si	Ni	Cr
A	0.19	0.80-1.25	0.04	0.05	0.30-0.65	0.40	0.40-0.65

ASTM A588 Grade A mechanical properties:

Grade	Plates and bars			Structural shapes
	For thick 4 in.and under [100mm]	Fro thick over 4in.to 5in.incl [100 to 125 mm]	For thick over 5 in.to 8 in.incl [125 to 200 mm]	All
Tensile strength,min,ksi [mpa]	70[485]	67[460]	63[435]	70[485]
Yield point,min,ksi [mpa]	50[345]	46[315]	42[290]	50[345]
Elongation in 8 in.[200mm],min,%	18	...	...	18
Elongation in 2 in.[50mm],min,%	21	21	21	21

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