A283 steel plates could be produced by plate type and coil type, in case it made from coil type and furnished without heat treatment or with stress relieving only, the addtional requirements, including additional test methods and test result, shall comply with A6/A6M specification.
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 |
Comparison between A36 and A283C
ASTM A 283 Gr C consist of four grade of material (A,B,C, & D) of carbon steel plate of structural quality for general application.
ASTM A 36 covers carbon steel plate, shape, and bar of structural quality for use in riveted, bolted or welded construction of bridges and building and for general structural purpose.
From material scope, both ASTM A 36 and ASTM A 283 are the carbon steel of structural quality for general application.
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