ASTM A283 / A283M Gr.A/B/C/D steel Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates.
ASTM A283 / A283M Gr.A/B/C/D steel 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.
ASTM A283 Gr.A/B/C/D Chemical Composition
| Element | melting analysis,% | |||
| Gr.A | Gr.B | Gr.C | Gr.D | |
| C, maximum | 0.14 | 0.17 | 0.24 | 0.27 |
| Mn , maximum | 0.90 | 0.90 | 0.90 | 0.90 |
| P, maximum | 0.035 | 0.035 | 0.035 | 0.035 |
| S, the largest | 0.04 | 0.04 | 0.04 | 0.04 |
| Si | ||||
| Steel, ≤1.5in. [≤40mm], maximum | 0.40 | 0.40 | 0.40 | 0.40 |
| Steel,> 1.5in. [> 40mm] | 0.15-0.40 | 0.15-0.40 | 0.15-0.40 | 0.15-0.40 |
| Cu,% Minimum (When the specified time for the Cu-containing steels) | 0.20 | 0.20 | 0.20 | 0.20 |
ASTM A283Gr.A/B/C/D steel tensile performance requirements
| Gr.A | Gr.B | Gr.C | Gr.D | |
| Tensile strength, ksi [MPa] | 45-60 | 50-65 | 55-75 | 60-80 |
| [310-415] | [345-450] | [380-515] | [415-550] | |
| Yield point, minimum, ksi [MPa] | 24[165] | 27[185] | 30[205] | 33[230] |
| Elongation, gauge 8in. [200mm] | 27 | 25 | 22 | 20 |
| Elongation, gauge 2in. [50mm], | 30 | 28 | 25 | 23 |
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