A302 Grade C steel plates standard specification for pressure vessel plates in alloy steel, manganese molybdenum and manganese-molybdenum-nickel. A302 Grade C steel plate shall be normally supplied in the as-rolled condition. Plates may be ordered normalized or stress relieved, or both. If A 302 Grade C above 50mm in thickness shall be normalized.

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ASTM A302 GR.C Mn-Mo-Ni Alloy Pressure Vessel steel plate Descriptions:

ASTM A302 Grade C is Manganese-molybdenum-nickel alloy boiler steel plate. The steel of A302 Grade C shall be killed and shall conform to fine grain size requirements. The boiler steel plate A203 Grade C shall be subjected to tension test to determine the tensile strength, yield strength, and elongation. When rolling SA302 Grade C under steel guide NACE MR0175,HIC test,SCC,SSC test shall be done in our mill lab for gurantee SA302 Grade C steel property. Other additional techincal test,such as PWHT,DWTT,High temperature tension test shall be chosed by the end users if they demand.
Thickness: 6MM to 300MM,
Width: 1500mm to 4050mm,
Length: 3000mm to 15000mm

Chemical Composition and Mechanical Properties:

A302 Grade C Chemical Composition
Carbon, max	%	Manganese, max	%	Silicon, max	%	Sulfur max	%
25mm or under	0.2	Heat Analysis	1.15-1.50	Heat Analysis	0.15-0.40	All thick	0.035
25-50mm	0.23	Product Analysis	1.07-1.62	Product Analysis	0.13-0.45
over 50mm	0.25
		Molybdenum max	%	Nickel max	%	Phosphorus	%
		Heat Analysis	0.45-0.60	Heat Analysis	0.40-0.70	All thick	0.035
		Product Analysis	0.41-0.64	Product Analysis	0.37-0.73	All thick	0.035

Mechanical Property of A302 Grade C steel plate	A302 Grade C
Tensile strength, kis [MPa]	80-100 [550-690]
Yield strength, min, kis [MPa]	50 [345]
Elongation in 8 in. [200 mm], min, %	17
Elongation in 2 in. [50 mm], min, %	20

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Shandong Chengshun Metal Materials Co., Ltd. is located in Jinan City, Shandong Province. It is a comprehensive company dealing in high-quality steel products, with a superior geographical location and very convenient transportation. The company has a complete and scientific quality system, and has been recognized by the industry for its integrity, strength and product quality.

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Boiler Pressure Vessel Steel