NV A550 and DNV Grade A550 steel plate Supplier
Gangsteel supply NV A550 and DNV Grade A550 steel plate. We are NV A550 Extra high strength steel plates and DNV Grade A550 certification supplier.
Related Words: NV A550, DNV Grade A550
Adopt standard: DNV Extra high strength steel plate
DNV Extra High Grade:
NV A550 steel grade.
NV A550 is applied to extra high strength steels, which is defined as steel with specified min yield stress of 420Mpa. The max yield is 690Mpa in NV A690.
NV A550 steel grade shall be killed and find grain treated. Steel grade of strength levels up to and including 500Mpa should be supplied in Normalized, TM or QT condition. Steel grade of strength levels above 500Mpa shall be supplied in TM or QT delivery condition.
Gangsteel is specialized in Super thickness steel grade. We have much experience in manufacture and exporting extra high strength steel grade.
NV A550 and DNV Grade A550 steel plate Chemical composition heat analysis
| Element | NV A550 Max % | Element | NV A550 max % |
| C | 0.21 | Ni | 0.40 |
| Mn | 1.70 | Mo | 0.08 |
| Si | 0.10-0.55 | Al | 0.020 min |
| S | 0.035 | Nb | 0.20-0.05 |
| P | 0.035 | V | 0.05-0.10 |
| Cu | 0.35 | Ti | 0.0007-0.05 |
| Cr | 0.20 | N |
NV A550 and DNV Grade A550 steel plate Mechanical properties,
| Grade | Thickness | Yield Strength | Tensile Strength | Elongation | Impact Energy |
| (mm) | MPa (min) | MPa | % (min) | (KV J) (min) | |
| 0 degree | |||||
| NV A550 | 8-260 | 550 | 670-830 | 16 | 37J |
Note: the impact energy under less 150mm thickness
If you have any need in NV A550 and DNV Grade A550 steel plate, please feel free to contact us soon to get a competitive price.