A131 Grade A steel plate is common strength shipbuilding plate which is mainly used for built hull of vessels,ship body construction.Normally when rolling,Air rolled and Control Rolled is ok for ship plate A131 Grade A with the thickness equal and belows 40 Millimeters,and for thickness above 40mm,the heat treatment shall be Normalised or TMCP,these two technical treatment would improve steel strength in yield and tensile points.
A131 Grade A Steel Plate Specification:
Thickness 4mm -260mm
Width :1200mm-4000mm
Length :3000mm-18000mm
ASTM A131 Grade A offshore steel plate chemical composition:
| C % |
Si %
|
Mn Min %
|
P %
|
S %
|
|
0.21
|
0.50
|
2.5
|
0.035
|
0.035
|
ASTM A131 Grade A offshore steel plate mechanical property:
Tensile Strength
(MPa) |
Yield Strength
(MPa)
|
Elongation in2 in.[50mm]
(%)
|
Impact Test Temperature(°C)
|
|
400-520
|
≥235
|
≥22
|
20
|
ASTM A131 Grade A Shipbuilding steel plate is mainly used to Shipbuilding Project and Ocean Offshore Structural Project.
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