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Grade B Shipbuilding steel plate Description
ASTM A131 Grade B steel plate is a kind of shipbuilding steel which is mainly for shipbuilding and platform. Grade B shipbuilding steel plate is a common tensile strength steel. As a professional A131 Grade B shipbuilding steel plate exporter, Guanzhou can supply high quality Grade B steel plate in most competitive price. ASTM A 131 shipbuilding steel plates can be used in the manufacture of the ship's hull structure whose weight is below 10000 tons.
Grade B shipbuilding steel plate specification:
Thickness: 6mm-200mm, Width: 1500mm-4000mm, Length: 6000mm-180000mm
Grade B steel Chemical Composition
|
Grade |
C max |
Si max |
Mn |
P max |
S max |
|
Grade B |
0.21 |
0.35 |
0.80-1.20 |
0.035 |
0.035 |
Note: CE: C+1/6Mn ≤ 0.40%, Cu ≤ 0.35%, Ni ≤ 0.30%
Grade B steel Mechanical Property
|
Grade |
Rm |
Re(MPa) min |
A% min |
Akv/J min |
||||||
|
Grade B |
400-520 |
235 |
22 |
E.T °C |
Thickness (mm) |
|||||
|
0 |
≤ 50 |
>50-70 |
>70-100 |
|||||||
|
L |
C |
L |
C |
L |
C |
|||||
|
27 |
20 |
34 |
24 |
41 |
27 |
|||||
Note: In the list, Rm: .tensile strength, Re: Yield strength, A%: elongation, E.T: experimental temperature, L: lengthways, C: crosswise.
Grade B steel Condition Of Delivery
|
Grade |
Category |
The thickness of steel |
||||
|
≤ 12 |
>12.5-25 |
>25-35 |
>35-50 |
>50-100 |
||
|
Grade B |
Plate/sheet |
A(-) |
A(50) |
N(50), TM(50) |
||
|
Profile steel |
- |
|||||
Note: 1. delivery condition: A =Any; N=Normalized; CR=Control Rolled; TM=TMPC, Temperature - deformation control rolling; AR*= Can be hot rolled with the agreement of Classification Society; CR*=Can be control rolled with the agreement of Classification Society.
2. The Figure in the ( ) means the sampling volume to do the impact test, the unit is Ton. (-) means without impact test.
Grade B steel Contrast in the different standards
|
ASTM A131M |
TOCT 5521 |
JIS G3106 |
BS LR |
GB712 |
|
Grade B |
Grade B |
SM400B SM400C |
Grade B |
Grade B |
We keep more than 10000 ton Grade B ship steel spot monthly, so we have much confidence im supplying high qualfied A131 Grade B steel products for our customers. Any need of Grade B shipbuilding steel, please contact us by calling or emailing. We will give you prompt answer.
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Main Product:
Steel Pipe,
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