Accreditation Administration System:
When steel mills take delivery of DNV Grade A,DNV Grade B,DNV Grade D and DNV Grade E
steel plates to customers,the Mill Test certificates shall be contains the following items:
① DNV rules requirements.
② Certificate No.
③ Heat Number and Bath Number.
④ Chemical composition and mechanical property.
⑤ Stamped and endorsed by DNV surveyor.
Property Data Table:
|
DNV | |||||
|
Grade |
|
DNV Grade A |
DNV Grade B |
DNV Grade D |
DNV Grade E |
|
Chemical Composition % ≤ |
C |
0.21 |
0.21 |
0.21 |
0.18 |
|
Mn(≥) |
2.5*C |
0.80 |
0.60 |
0.70 | |
|
P |
0.035 |
0.035 |
0.035 |
0.035 | |
|
S |
0.035 |
0.035 |
0.035 |
0.035 | |
|
Si |
0.50 |
0.35 |
0.10- 0.35 |
0.10- 0.35 | |
|
Al (acid) |
0.035 |
0.035 |
0.035 |
0.035 | |
|
Yield Strength (Mpa) |
235 |
235 |
235 |
235 | |
|
Tensile Strength (Mpa) |
400-520 |
400-520 |
400-520 |
400-520 | |
|
Impacting Test temperature (℃) |
20 |
0 |
-20 |
-40 | |
|
Mark |
NV/A |
NV/B |
NV/D |
NV/E | |
H:Heat Analysis. P:Product Analysis
