A515 Gr 70/SA515 Gr.70 is widely used in petroleum, chemical industry, power station, boiler and other industries. It is used to make reactor, heat exchanger, separator, spherical tank, paint tank, liquefied gas tank, nuclear reactor pressure shell, boiler drum, liquefied petroleum gas cylinder, high-pressure water pipe of hydropower station, turbine volute shell and other equipment and components

A515 Gr 70 Steel plates less than or equal to 2 in (50 mm) in thickness are usually delivered in hot rolled. Normalizing treatment can be ordered, but those greater than 2 in (50 mm) in thickness must be delivered in normalizing state.

Chemical composition of Heat analysis for A515 Gr 70 steel plate (Max %):

 

Thickness	C	Si	Mn	P
T≤1in(25mm)	≤0.31	0.15-0.45	≤1.30	0.035
25mm＜T≤50mm	≤0.33
50mm＜T≤100mm	≤0.35
100mm＜T≤200mm	≤0.35
T＞8in(200mm)	≤0.35

 

 

 

 

 

 

 

 

Mechanical properties for A515 Gr.70 steel plate:

 

	Tensile strength,ksi(Mpa)	Yield strength,ksi(Mpa)	Elongation ≥,%  200mm	Elongation ≥,%  50mm
A515 Gr.70 (485)	70-90 (485-620)	≥33(260)	17	21

 

Other additional heat treatment for A515 Gr.70:TMCP,Normalizing,Quenched,Tempered,and Q+T.

Additional technical requirement:UT,Impact test,Z15-Z35,HIC.

Related Grade:A515 Gr.65,A515 Gr.60