GL AH40 shipbuilding steel plate is a kind of high tensile strength shipbuilding steel. All GL AH40 shipbuilding steel plate are standard hot rolled carbon steels. All of these steels have been engineered to be optimal long-lived shipbuilding steels. Higher-strength GL shipbuilding steel comes in 12 grades of 3 strengths,GL AH40 shipbuilding steel plate is one of the grades.
GL AH40 Shipbuilding steel plates are mainly used for making the offshore oil drilling platform, the hull of ship building and ship repairing, the platform pipe joints and other components.
| Thickness |
1.2-40mm |
|
Width |
1220-4200mm |
|
Length |
5000-18000mm |
Notes: coil thickness ≤ 25mm
Grade |
C % |
Si % |
Mn % |
P % |
S % |
V % |
AL % |
Cr % |
|
GL Grade AH40 |
0.180 |
0.1-0.5 |
0.90-1.6 |
0.035 |
0.035 |
0.05-0.10 |
0.015 |
0.200 |
|
Cu % |
Mo % |
Nb % |
Ni % |
Ti % |
|
|
|
|
|
0.350 |
0.080 |
0.02-0.05 |
0.400 |
0.020 |
|
|
|
Grade |
Thickness(mm) |
MinYield(Mpa) |
Tensile(Mpa) |
Elongation (%) |
Min Impact Energy |
|
|
GL Grade AH40 |
8mm-50mm |
Min 390Mpa |
510-650Mpa |
20% |
0 |
34J |
|
51mm-70mm |
Min390Mpa |
510-650Mpa |
20% |
0 |
41J |
|
|
71mm-100mm |
Min 390Mpa |
510-650Mpa |
20% |
0 |
50J |
|
|
The min impact energy is longitudinal energy |
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