NV A620 and DNV Grade A620 steel plate Supplier
Gangsteel supply NV A620 and DNV Grade A620 steel plate. We are NV A620 Extra high strength steel plates and DNV Grade A620 certification supplier.
Related Words: NV A620, DNV Grade A620
Adopt standard: DNV Extra high strength steel plate
DNV Extra High Grade:
NV A620 steel grade.
NV A620 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 A620 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 A620 and DNV Grade A620 steel plate Chemical composition heat analysis
| Element | NV A620 Max % | Element | NV A620 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 A620 and DNV Grade A620 steel plate Mechanical properties,
| Grade | Thickness | Yield Strength | Tensile Strength | Elongation | Impact Energy |
| (mm) | MPa (min) | MPa | % (min) | (KV J) (min) | |
| 0 degree | |||||
| NV A620 | 8-260 | 620 | 720-890 | 15 | 41J |
Note: the impact energy under less 150mm thickness
If you have any need in NV A620 and DNV Grade A620 steel plate, please feel free to contact us soon to get a competitive price.