The NK AH40 shipbuilding steel plates have yield strength of Min 390Mpa, and ultimate tensile strength of 510-650Mpa.NK AH40 shipbuilding steel plates are standard hot rolled carbon steels. All of these steels have been engineered to be optimal long-lived shipbuilding steels.
NK 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.
Grade |
C % |
Si % |
Mn % |
P % |
S % |
V % |
AL % |
Cr % |
NK 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 |
|
NK 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 |
Thickness |
3-150mm |
Width |
1220-4200mm |
Length |
5000-18000mm |
Notes: coil thickness ≤ 25mm
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