ASTM A283 Carbon steel sheet

Classification :

ASTM A283 carbon steel is an alloy of iron, further classified as a carbon steel. This is steel specification covers four grades of low carbon steel plates of structural quality for general application. Grades A, B, C and D. Comparison between A36 and A283C.

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Carbon Steel

Product information

ASTM A283 plate steel features low and intermediate tensile strength carbon steel plate of structural quality. It has four common variants, each represented as a separate material. The material properties section below shows ranges encompassing all variants.

This specification covers four grades of carbon steel plates of structural quality for general application. Steel samples shall be melt processed by either open-hearth, basic-oxygen, or electric furnace. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, and copper. Steel specimens shall also undergo tensile tests and shall conform to required values of tensile strength, yield point, and elongation.

Chemical composition & Mechanical property

ASTM A283 Chemical Properties

	Grade A	Grade B	Grade C	Grade D
Carbon, max	0.14	0.17	0.24	0.27
Manganese, max	0.90	0.90	0.90	0.90
Phosphorus, max	0.035	0.035	0.035	0.035
Sulphur, max	0.04	0.04	0.04	0.04
Silicon Plates 1 1/2 in and under, max Plates over 1 1/2 in	0.40 0.15-0.40	0.40 0.15-0.40	0.40 0.15-0.40	0.40 0.15-0.40
Copper min % when copper steel is specified	0.20	0.20	0.20	0.20

ASTM A283 Mechanical Properties

Grade A	Grade B	Grade C	Grade D
Tensile Strength:	45,000 -60,000 psi [310 - 415 MPa]	50,000 -65,000 psi [345 - 450 MPa]	55,000 75,000 psi [380 - 515 MPa]	60,000 -80,000 psi [415 - 550 MPa]
Min. Yield Point:	24,000psi [165 MPa]	27,000psi [185 MPa]	30,000psi [205 MPa]	33,000psi [ 230 MPa]
Elongation in 8":	27% min	25% min	22% min	20% min
Elongation in 2":	38% min	28% min	25% min	23% min

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Carbon Steel