Grade A steel plate for shipbuiling&platform.ASTM A131 Grade A steel plate can be used in the manufacture of the ship's hull structure ,we keep more than 10000 ton Grade A ship steel spot every month , any need in Grade A ship steel , contact us!
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Grade A steel plate is used for shipbuiling's hull structure and platform. The shipbuilding steel plate grade A is the common tensile strength steel. It has good toughness properties and higher strength, strong corrosion-resistance,the processing properties,and welding properties.ASTM A131 Grade A steel plate can be used in the manufacture of the ship's hull structure whose weight is below 10000 tons,and usually do navigation around coastal and river area.
Grade A shipbuiling steel plate specification:
Thickness: 4mm to 260mm,
Width: 1200mm to 4000mm
Length: 3000mm to 18000mm.
Grade A steel plate Chemical Composition
Grade |
C max |
Si max |
Mn |
P max |
S max |
Grade A |
0.21 |
0.50 |
≥ 2.5C |
0.035 |
0.035 |
Note: CE: C+1/6Mn ≤ 0.40%
Cu ≤ 0.35%,Ni ≤ 0.30%≤
Grade A steel plate Mechanical Property
Grade |
Rm |
Re(MPa) min |
A% min |
Akv/J min |
||||||
Grade A |
400-520 |
235 |
22 |
E.T °C |
Thickness (mm) |
|||||
20 |
≤50 |
>50-70 |
>70-100 |
|||||||
L |
C |
L |
C |
L |
C |
|||||
- |
- |
34 |
24 |
41 |
27 |
Note: In the list , Rm: tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.
Condition Of Delivery
Grade |
category |
The thickness of steel |
||||
≤12 |
>12.5-25 |
>25-35 |
>35-50 |
>50-100 |
||
Grade A |
Plate/sheet |
A(-) |
N(-),TM(-) |
|||
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 isTon.(-) means without impact test.Contrast in the different standard
ASTM A131M |
TOCT 5521 |
JIS G3106 |
BS LR |
GB712 |
Grade A |
A |
SM400A |
A |
A |
As a Grade A ship steel supplier in China ,we keep more than 1000 tons Grade A ship steel spot every month, any need in Grade A ship steel, contact us!