GL ATM shipbuilding steel plate and sheet
GL ATM Steel Description:
The steel for shipbuilding and oil platform---ATM, is the common 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.This kind of steel 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.
GL ATM Steel Application :
GL ATM steel 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. GL ATM with high strength, good toughness low temperature impact , excellent weldability characteristics, is a kind of high strength ship's hull structure plate.
GL ATM Steel chemical composition by [%]:
| Grade |
C max |
Si max |
Mn |
P max |
S max |
|
GL ATM |
0.21 |
0.50 |
≥ 2.5C |
0.035 |
0.035 |
Note: CE: C+1/6Mn ≤ 0.40%,Cu ≤ 0.35%,Ni ≤ 0.30%
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.
GL ATM Steel Mechanical properties:
Grade |
Rm |
Re(MPa) min |
A% min |
Akv/J min |
||||||
|
GL ATM |
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.
GL ATM Steel Delivery state:
|
Grade |
category |
The thickness of steel |
||||
|
≤ 12 |
>12.5-25 |
>25-35 |
>35-50 |
>50-100 |
||
|
GL ATM |
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 is Ton.(-) means without impact test.
Contrast in the different standard
|
ASTM A131M |
TOCT 5521 |
JIS G3106 |
BS LR |
GB712 |
|
A |
A |
A |
A |
GL ATM 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. We are a leading exporter in china of shipbuilding steel plate and sheet. So if you need the steel,please contact us at any time.
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