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ASTM A131 AH40 steel
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ASTM A131 AH40 steel

ASTM A131 AH40 steel

ASTM A131 AH40 is high tensile strength steel.

AH40 characteristics and AH40 application:

It is the Hull structural steel,with it's good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties。This kind of steel can be used in the manufacture of the ocean ship's hull structure whose weight is above 10000 tons。

AH40 steel plate chemical composition %

C max Si max Mn P max S max Als min Ti max Cu max Cr max Ni max Mo max Nb V
AH40 0.18 0.50 0.90-1.60 0.035 0.035 0.015 0.02 0.35 0.20 0.40 0.08 0.02-0.05 0.05-0.10

Note: Generally speaking CE will be ≤ 0.40%. If the delivery condition is TMPC, the CE will be : ≤ 0.40% (thickness ≤ 50mm). Ceq% =(C+Mn)/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

AH40 delivery condition:

Fine grains elements category The thickness of steel
≤ 12 >12.5-20 >20-25 >25-35 >35-50 >50-100
AH40 any Plate/
A(50) N(50),CR(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.

If you have any question for AH40 steel plate, please contact with us.

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