A588 Grade B steel are highly resistant to atmospheric corrosion,superior corrosion resistance over regular carbon steel as a result of the development of a protective oxide film on the metals surface which slows down further corrosion. These steels are designed primarily to be used in unpainted applications where a reduction in maintenance costs included such as painting.
Chemical Composition of A588 Grade B
|
ASTM A588 Chemical Composition |
|||||||
|
Grade |
The Element Max (%) |
||||||
|
C |
Si |
Mn |
P |
S |
Ni |
Nb |
|
|
A588 |
0.20 |
0.15-0.50 |
0.75-1.35 |
0.04 |
0.05 |
0.50 |
.. |
|
Cu |
Cr |
Mo |
N |
V |
|
|
|
|
0.20-0.40 |
0.40-0.70 |
… |
0.01 |
0.01-0.10 |
|
|
|
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
Mechanical properties of A588 Grade B
|
Mechanical Property of A588 Grade B steel plate |
A588 Grade B |
|
Tensile strength, kis [MPa] |
Tensile strength, kis [MPa] |
|
100mm or under |
[485] |
|
100mm-125mm |
[460] |
|
125mm-200mm |
[435] |
|
Yield strength, min, kis [MPa] |
Yield strength, min, kis [MPa] |
|
100mm or under |
[345] |
|
100mm-125mm |
[315] |
|
125mm-200mm |
[290] |
|
Elongation in under. [50 mm], min, % |
21 |
|
Elongation in under. [50 mm-200mm], min, % |
18 |
