In the "old days" A283 A,A283 B,A283 C,A283 D were made using rimmed, capped and semikilled steel making processes.Thet are specifications for low and intermediate strength steel plates.The A283 A,A283 B,A283 C,A283 D steel are used for general application and structural quality, and are not permitted for pressure retaining application. The A283 A,A283 B,A283 C,A283 D steel steel plate are used to produce structural parts of the bolted and welded steel.
A283 A,A283 B,A283 C,A283 D chemical composition
GRADE |
Si |
Mn |
P |
S |
|
|
≤ |
|||||
|
A283 A |
≤0.14 |
≤0.40 |
≤0.90 |
0.035 |
0.040 |
|
A283 B |
≤0.17 |
≤0.40 |
≤0.90 |
0.035 |
0.040 |
|
A283 C |
≤0.24 |
≤0.40 |
≤0.90 |
0.035 |
0.040 |
|
A283 D |
≤0.27 |
≤0.40 |
≤0.90 |
0.035 |
0.040 |
A283 A,A283 B,A283 C,A283 D mechanical property
GRADE |
Tensile Strength（σb/MPa） |
Offset Yield Strength（σs/MPa） |
Elongation |
||
|
T≤50MM , % |
|||||
|
A283 A |
310-415 |
≥165 |
≥30 |
||
|
A283 B |
345-450 |
≥185 |
≥28 |
||
|
A283 C |
380-515 |
≥205 |
≥25 |
||
|
A283 D |
415-550 |
≥230 |
≥23 |
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