What is A516-70 Grade 485 steel?

ASTM A516-70 plate is also called SA516 GR 70, ASTM A516 Grade 485, ASME SA516 Grade 485. It is a hot selling boiler steel and pressure vessel plates product. Generally, it is used   for welded pressure vessels where improved notch toughness is important.

 

Chemical Composition (%) of steel A516 Gr 70

	Thickness(mm)	C	Mn	P	S	Si
Heat analysis	≤12.5	0.27	0.85-1.2	0.025	0.025	0.15-0.40
	>12.5-50	0.28	0.85-1.2
	>50-100	0.30
	>100-200	0.31
	>200	0.31

 

Mechanical Properties of steel A516 Gr 70

Tensile Strength Ksi (MPa)	Yield Strength Ksi (MPa)	Elongation Min, %
		50-200mm	≤50mm
70-90 (485-620)	38 (260)	17	21

 

Features of steel A516 Gr 70

Boiler steel A516 Gr 70 plate has good impact resistance, low temperature deformation, good welding performance, good fatigue resistance, good anti-layered cracking performance, micro-alloying, high purity, low carbon equivalent, strong resistance to sulfur and hydrogen, good dimensional tolerance and good surface quality.

 

Application of boiler steel A516 Gr 70

ASTM A516 Gr 70 boiler steel plates are mainly used for petroleum, chemical, turbine, boiler and other industries, used in the manufacture of reactors, heat exchangers, separators, spherical tanks, gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders, high-pressure hydropower stations Water pipes, water turbine volutes and other equipment and components.

Other technical requirements of boiler steel A516 Gr 70

UT, AR, TMCP, CR, N, Q+T, Z15, Z25, Z35, Impact test (-20℃, -40℃), HIC, SPWHT, NACE0175