GL AH40TM

GL AH40TM shipbuilding steel plate and sheet

GL AH40TM Steel Description:
The steel for shipbuilding and oil platform---AH40TM, is the high tensile strength steel.
GL AH40TM is the Hull structural steel,with it's good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties.GL AH40TM steel can be used in the manufacture of the ocean ship's hull structure whose weight is above 10000 tons.

GL AH40TM Steel Application :
AH40TM with high strength, good toughness low temperature impact , excellent weldability characteristics, is a kind of high strength ship's hull structure plate.AH40TM is used to manufacture medium-sized ocean, coastal and river trade area ship's hull structure.

GL AH40TM Steel chemical composition by [%]:

Grade	C max	Si max	Mn	P max	S max	Als min	Ti max	Cu max	Cr max	Ni max	Mo max	Nb	V
GL AH40TM	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.

GL AH40TM Steel Mechanical properties:

Grade	Rm (MPa)	Re(MPa) min	A% min	Akv/J min
GL AH40 TM	510-660	390	20	E.T °C	Thickness (mm)
				0	≤ 50		>50-70		>70-100
					L	C	L	C	L	C
					41	27	-

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

GL AH40TM 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 AH40TM	any	Plate/ sheet	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.

GL AH40TM 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 be more.

We are an outstanding exporter in shipbuilding steel for many years. So if you need them, please be free to contact us.

Source:

Tags: