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GL AH32TM

GL AH32TM  GL AH32TM  GL AH32TM

GL AH32TM shipbuilding steel plate and sheet

GL AH32TM Steel Description:
The steel for shipbuilding and oil platform---AH32TM, is the high tensile strength steel.
GL AH32TM 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.
GL AH32TM Steel  Application :
GL AH32TM steel can be used in the manufacture of the ocean ship's hull structure whose weight is above 10000 tons. AH32TM with high strength, good toughness low temperature impact , excellent weldability characteristics, is a kind of high strength ship's hull structure plate. So DNV AH32TM is used to manufacture medium-sized ocean, coastal and river trade area ship's hull structure.

GL AH32TM Steel chemical composition by [%]:

Grade

C max

Si ax

Mn

P max

S max

Als min

Ti max

Cu max

Cr max

Ni max

Mo max

GL
AH32TM

0.18

0.50

0.90-1.60

0.035

0.035

0.015

0.02

0.35

0.20

0.40

0.08

Note: Generally speaking CE will be ≤ 0.40%. If the delivery condition is TMPC, the CE will be : ≤ 0.36% (thickness ≤ 50mm),≤0.38%( when the thickness >50-100).
Ceq% =(C+Mn)/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

GL AH32TM Steel Mechanical properties:

Grade

Rm (MPa)

Re(MPa) min

A% min

Akv/J min

GL
AH32TM

440-570

315

22

E.T °C

Thickness (mm)

0

≤ 50

>50-70

>70-100

L

C

L

C

L

C

31

22

38

26

46

31

Note: In the list , Rm: .tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.

GL AH32TM Steel Delivery state:


Grade

Fine grains elements

category

The thickness of steel

≤ 12

>12.5-20

>20-25

>25-35

>35-50

>50-100

GL
AH32
TM

Nb+V or V

Plate/
sheet

A(50)

N(50),CR(50),TM(50)

N(50),CR(25),TM(50)

Profile steel

N(50),CR(50),TM(50),AR*(25)

-

Al or Al+Ti

Plate/
sheet

A(50)

AR*(25)

-

N(50),CR(50),TM(50)

N(50),CR(25),TM(50)

Profile steel

A(50)

N(50),CR(50),TM(50),AR*(25)

-

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.

Contrast in the different standard

ASTM A131M

TOCT 5521

JIS G3106

BS LR

GB712

AH32

A32

SM490B SM490C

AH32

A32

GL AH32TM shipbuilding plate has low alloy content, grain refinement elements like V, Ti, Nb, etc. Welding performance is superior. Preheating before welding is generally not proceeded, but it is done if it is at a low temperature or super thickness of structural components is welded,  that is , it needs to take preheating measures. Because this steel contains a small amount of V, Ti, Nb and other elements of grain refinement, and in order to reduce the hardening tendency of cracks to prevent cold(ing) crack, the use of welding wire energy may bemore. If you need the steel,please contact us.

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