GL FH32 shipbuilding steel plate and sheet
The steel for shipbuilding and oil platform---FH32, is the high tensile strength steel.
It is the Hull structural steel,with it's good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties.
GL FH32 steel can be used in the manufacture of the ocean ship's hull structure whose weight is above 10000 tons. GL FH32 is mainly used to manufacture the ship hull structure of ocean, coastal and inland sea areas , shipyards, oil platforms, pipelines in the ocean, coastal power plants, port facilities and other structural parts.
GL FH32 Steel chemical composition by [%]:
|
Grade |
C max |
Si max |
Mn |
P max |
S max |
Als min |
Ti max |
Cu max |
Cr |
Ni |
Mo |
N |
|
GL |
0.16 |
0.50 |
0.90-1.60 |
0.025 |
0.025 |
0.015 |
0.02 |
0.35 |
0.20 |
0.80 |
0.08 |
0.009 |
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 FH32 Steel Mechanical properties:
|
Grade |
Rm |
Re(MPa) min |
A% min |
Akv/J min |
||||||
|
GL |
440-570 |
315 |
22 |
E.T °C |
Thickness (mm) |
|||||
|
-60 |
≤ 50 |
>50-70 |
>70-100 |
|||||||
|
L |
C |
L |
C |
L |
C |
|||||
|
31 |
22 |
- |
- |
- |
- |
|||||
Note: In the list , Rm: .tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.
GL FH32 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 |
Any |
Plate/sheet |
N,TM,Q&T |
- |
||||
|
Profile steel |
N(25),TM(25),QT*(25),CR*(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.
With excellent welding performance, a variety of welding method can be used for welding . FH32 has little alloy elements and grain refinement elements added, so its weldability is good . Shipbuilding steel includes four grades,that is A,B,C,D. Grade A means impact test at 20°C; Grade B is impact test at 0°C; Grade C means impact test at -20°C; Grade D is impact test at -40°C. Our steel has exported to many countries ,like Korea,Viet Nam,Singapore,etc,and has a good reputation in the world.
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