KR high-strength hull structure steel is divided into strength grades according to its minimum yield strength, and each strength grade is divided into A, D, E, and F 4 grades according to its impact toughness.
A, D, E, and F respectively represent the impact toughness that they can achieve at 0°, -20°, -40°, and -60° respectively.
KR AH40 DH40 EH40 FH40 ship plate flaw detection requirements:
- first detection, second detection, third detection.
KR AH40 DH40 EH40 FH40 shipbuilding steel plate density:
- 7.85/m3.
KR AH40 DH40 EH40 FH40 ship plate weight adjustment formula:
- thickness * width * length * density.
KR AH40 DH40 EH40 FH40 marine grade steel plate regular size:
- 8-80mm*2000-2500mm*8000-10000mm
KR Grade A40 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max | Mn | P max | S max | Als | Nb | V | Ti max. | Cu max. | Cr max. | Ni max. | Mo max. | N max. |
|
0.18 |
0.50 | 0.90-1.60 |
0.030 |
0.030 |
0.015 | 0.02-0.05 | 0.05-0.10 | 0.02 | 0.35 | 0.20 | 0.40 | 0.08 |
- |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 390 | 510-660 | 20 |
KR Grade D40 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max | Mn | P max | S max | Als | Nb | V | Ti max. | Cu max. | Cr max. | Ni max. | Mo max. | N max. |
|
0.18 |
0.50 | 0.90-1.60 |
0.025 |
0.025 |
0.015 | 0.02-0.05 | 0.05-0.10 | 0.02 | 0.35 | 0.20 | 0.40 | 0.08 |
- |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 390 | 510-660 | 20 |
KR Grade E40 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max | Mn | P max | S max | Als | Nb | V | Ti max. | Cu max. | Cr max. | Ni max. | Mo max. | N max. |
|
0.18 |
0.50 | 0.90-1.60 |
0.025 |
0.025 |
0.015 | 0.02-0.05 | 0.05-0.10 | 0.02 | 0.35 | 0.20 | 0.40 | 0.08 |
- |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 390 | 510-660 | 20 |
KR Grade F40 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max | Mn | P max | S max | Als | Nb | V | Ti max. | Cu max. | Cr max. | Ni max. | Mo max. | N max. |
|
0.16 |
0.50 | 0.90-1.60 |
0.020 |
0.0.20 |
0.015 | 0.02-0.05 | 0.05-0.10 | 0.02 | 0.35 | 0.20 | 0.80 | 0.08 |
0.009 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 390 | 510-660 | 20 |
KR AH40 DH40 EH40 FH40 ship plate is a special steel plate for ships and offshore platforms. It is often used in the manufacturing of ships and offshore platforms.
For example; shipbuilding, offshore platforms, port machinery, cross-sea bridges, derricks, etc.
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