ASME SA709 HPS100W steel

ASME SA709 Grade HPS100W is used to make riveted and bolted highway bridges and railway bridges (including sea-crossing bridges). ASME SA709 Grade HPS100W is widely used in engineering structures, such as building steel structures, construction machinery, mining machinery, trucks, bridges, pressure vessels, especially for building and engineering machinery components requiring better weldability and toughness.

ASME SA709 HPS100W Chemical Composition

Grade	C	Mn	P	S	Si	Cu	Ni
	≤0.08	0.95-1.50	≤0.015	≤0.006	0.15-0.35	0.90-1.20	0.65-0.90
SA709 HPS100W	Cr	Mo	V	Nb	Al	N
	0.40-0.65	0.40-0.65	0.04-0.08	0.01-0.03	0.02-0.05	≤0.015

ASME SA709 HPS100W Mechanical Property

Grade	Yield Strength Mpa	Tensile Strength Mpa	Elongation in 2 in. %	Elongation in 8 in. %
SA709 HPS100W	≥690	760-895	≥18	-

ASME SA709 Grade HPS100W is exposed to low temperature or certain environmental medium for a long time, so ASME SA709 Grade HPS100W must have good low temperature toughness and weatherability. ASME SA709 Grade HPS100W should be tested before leaving the factory by tension test, cold bending test, impact test, aging impact test, fracture test, tensile test and so on. Before ASME SA709 Grade HPS100W is used in bridges, a series of weldability test, fatigue test, drop weight tear test, brittle transition temperature test and so on should be carried out to ensure the safety and reliability of the bridge. At present, in order to meet the above requirements in the use and properties of ASME SA709 Grade HPS100W, the mainly methods are microalloying, TMCP and heat treatment.