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The shipbuilding plate thickness ranges between 5 mm to 150 mm.
Ah36 Vs Dh36
AH36 and DH36 are both defined as a high strength structural steel, which are primarily used in the shipbuilding industry.
Shipbuilding Steel Plate Grade A Vs B
The difference between Shipbuilding Steel Plate Grade A Vs B lies in the temperature of the impacting test, as well as the impacting energy value.
Grades: A, B, D, E, AH32/36/40, DH32/36/40, EH32/36/40
According to its yield strength, shipbuilding plate of can be divided into below grades:
Grade A steel is the impact force subjected to normal temperature (20 ° C).
Grade B steel impact force at 0 °C.
Grade D steel impact force at -20 °C.
Grade E steel impact force at -40 °C.
Elements | C | Mn | Al | Si | P | S |
AH32 | ≤0.18 | 0.7~1.60 | ≥0.015 | 0.10~0.50 | ≤0.04 | ≤0.04 |
DH32 | ≤0.18 | 0.90~1.60 | ≥0.015 | 0.10~0.50 | ≤0.04 | ≤0.04 |
EH32 | ≤0.18 | 0.90~1.60 | ≥0.015 | 0.10~0.50 | ≤0.04 | ≤0.04 |
AH36 | ≤0.18 | 0.7~1.60 | ≥0.015 | 0.10~0.50 | ≤0.04 | ≤0.04 |
DH36 | ≤0.18 | 0.90~1.60 | ≥0.015 | 0.10~0.50 | ≤0.04 | ≤0.04 |
EH36 | ≤0.18 | 0.90~1.60 | ≥0.015 | 0.10~0.50 | ≤0.04 | ≤0.04 |
Steel Grade | Thickness/mm | Yield point/ MPa | Tensile strength/ MPa | Elongation/ % | V-type impact test | ||
Temperature/ ℃ | Average impact absorption workAkv/J | ||||||
Vertical | Horizontal | ||||||
A | ≤50 | ≥235 | 400~490 | ≥22 | - | - | - |
B | ≤50 | ≥235 | 400~490 | ≥22 | 0 | ≥27 | ≥20 |
D | ≤50 | ≥235 | 400~490 | ≥22 | -10 | ≥27 | ≥20 |
E | ≤50 | ≥235 | 400~490 | ≥22 | -40 | ≥27 | ≥20 |
AH32 | ≤50 | ≥315 | 440~590 | ≥22 | 0 | ≥31 | ≥22 |
DH32 | ≤50 | ≥315 | 440~590 | ≥22 | -20 | ≥31 | ≥22 |
EH32 | ≤50 | ≥315 | 440~590 | ≥22 | -40 | ≥31 | ≥22 |
AH36 | ≤50 | ≥355 | 490~620 | ≥22 | 0 | ≥34 | ≥24 |
DH36 | ≤50 | ≥355 | 490~620 | ≥22 | -20 | ≥34 | ≥24 |
EH36 | ≤50 | ≥355 | 490~620 | ≥22 | -40 | ≥34 | ≥24 |