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Chemical composition and production process of A515 Gr70 boiler plate

Posted:2021-11-13 10:02:27

1. Brief introduction of A515 Gr70 boiler plate
A515 Gr70 steel is austenitic coarse-grain steel for pressure vessels according to the American ASTM standard. It is mainly used to manufacture medium and high temperature welded boilers and pressure vessels.

2. Chemical composition of A515 Gr70 boiler plate:

Grade	C	Si	Mn	P	S
A515 Gr70	≤0.31	0.15-0.40	≤1.20	≤0.035	≤0.035

3. Production process of A515 Gr70 boiler plate:
Electric furnace smelting → LF/VD furnace refining → ingot casting → ingot cleaning → ingot heating → rolling plate → flaw detection → normalizing → steel plate grinding → cutting and sampling → performance inspection → storage