Carbon steel plate A283 Grade A and A283 Grade B under steel specification ASTM A283/A283 M,they are equal to carbon steel plate SA283 Grade A and SA283 Grade B in steel standard ASME SA 283/SA 283M.Considering the different carbon contains,there are a little difference in yield strength between A283 Grade A and A283 Grade B.For structural steel A283 Grade A,the minimum yield strength is 165 Mpa,tensile between 310 and 415.And for carbon steel sheet A283 Grade B,the yield strength shall be above 185 Mpa,tensile strength within 345 to 450 Mpa.
These common carbon structural steel plate A283 Grade A and A283 Grade B are mainly used to built steel tanks in oil plants and companies.
Chemical Composition for A283 Grade A and A283 Grade B
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A283 Grade A |
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C |
P |
S |
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A283 GR.A |
0.14 |
0.15-0.40 |
0.90 |
0.035 |
0.04 |
0.20 |
Carbon Equivalent: Ceq=【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
|
A283 Grade |
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C |
P |
S |
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A283 GR.B |
0.17 |
0.15-0.40 |
0.90 |
0.035 |
0.04 |
0.20 |
Carbon Equivalent: Ceq=【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
Mechanical Property for A283 Grade A and A283 Grade B
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A283 Grade A |
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A283 GR.A |
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t<=50 |
310-415 |
165 |
30 |
|
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50<> |
310-415 |
165 |
27 |
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A283 Grade B |
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A283 GR.B |
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|
t<=50 |
345-450 |
185 |
28 |
|
|
50<> |
345-450 |
185 |
25 |
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