What is the ASTM A203 steel composition?

Jun 02, 2021

Standard: ASTM A203

Grades:A203 Grade A, A203 Grade B,A203 Grade D,A203 Grade E,A203 Grade F

Category: alloy steel, pressure vessel steel, boiler steel plate

A203 Steel Plate Size Range Thickness: 6mm to 150mm

boiler stel machining

ASTM A203 steel composition (%)

Grade	C	Mn≥	Si	P	S
A203 Grade A	0.17	0.78-0.88	0.13-0.45	0.035	0.035
A203 Grade B	0.17	0.78-0.88	0.13-0.45	0.035	0.035
A203 Grade D	0.17	0.7-0.8	0.13-0.45	0.035	0.035
A203 Grade E	0.17	0.7-0.8	0.13-0.45	0.035	0.035
A203 Grade F	0.2	0.7-0.8	0.13-0.45	0.035	0.035

A203 Grade B nickel-alloy steel plates are intended primarily for welded pressure vessels. As a steel making practice, the steel shall be killed and shall conform to fine grain size requirements.

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