GL DH40 shipbuilding steel plate are mainly used to build vessels which are sailing in low temperature oceans.When rolling GL DH40 shipbuilding steel plate, TMCP or Normalized shall be done for heat treatment,and low temperature impacting test have to be done under minus 20 centigree.GL DH40 shipbuilding steel plate owned the highest tensile strength within 510-650 Mpa,and the minimum yield point shall be 390 Mpa.
GL DH40 shipbuilding steel plate is mainly used to Shipbuilding Project and Ocean Offshore Structural Project.
| Yield strength (≥Mpa) |
Tensile strength (Mpa) |
Elongation in ≥,% |
|
|
390 |
510-650 |
200mm |
50mm |
|
19 |
22 |
||
| Main chemical elements composition of GL Grade DH40 | ||||||
|
C |
Si |
Mn |
P |
S |
Al (acid) min. |
Nb |
|
0.18 |
0.10-0.50 |
0.90-1.60 |
0.035 |
0.035 |
0.015 |
0.02-0.05 |
|
V |
Ti |
Cu |
Cr |
Ni |
Mo |
|
|
0.05-0.10 |
0.02 |
0.35 |
0.20 |
0.40 |
|
|
| Thickness |
1.2-40mm |
|
Width |
1220-4200mm |
|
Length |
5000-18000mm |
Notes: coil thickness ≤ 25mm
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