Description
ASTM A131 Shipbuilding Steel Plate
ASTM A131 is the standard specification for structural steel used in shipbuilding. It covers different grades of carbon and high-strength low-alloy (HSLA) steel plates, primarily designed for use in the construction of ships and offshore structures.
Key Grades of ASTM A131 Steel
- Grade A, B, D, and E – Carbon steel plates with varying mechanical properties.
- Grade AH32, DH32, EH32, FH32 – High-strength grades with a minimum yield strength of 315 MPa.
- Grade AH36, DH36, EH36, FH36 – High-strength grades with a minimum yield strength of 355 MPa.
- Grade AH40, DH40, EH40, FH40 – High-strength grades with a minimum yield strength of 390 MPa.
Dimensions
ASTM A131 Grade A, B, D, and E
- Thickness: 0.1875–3.94 in (4.762–100 mm)
- Length: 240–1020 in (6100–25910 mm)
- Width: 72–129.9 in (1800–3299 mm)
ASTM A131 Grade AH/DH 32
- Thickness: 0.251–1.50 in (6.38–38.1 mm)
- Length: 240–1020 in (6100–25910 mm)
- Width: 72–120 in (1800–3050 mm)
ASTM A131 Grade AH/DH/EH 36
- Thickness: 0.251–3.94 in (6.38–100 mm)
- Length: 240–1020 in (6100–25910 mm)
- Width: 72–129.9 in (1800–3299 mm)
ASTM A131 Chemical Composition
| Element | A/B/D/E (%) | AH32/DH32/EH32 (%) | AH36/DH36/EH36 (%) |
|---|---|---|---|
| Carbon (C) | 0.21 max | 0.18 max | 0.18 max |
| Manganese (Mn) | 2.5 × C min | 0.90 – 1.60 | 0.90 – 1.60 |
| Phosphorus (P) | 0.035 max | 0.035 max | 0.035 max |
| Sulfur (S) | 0.035 max | 0.035 max | 0.035 max |
| Silicon (Si) | 0.10 – 0.35 | 0.10 – 0.50 | 0.10 – 0.50 |
ASTM A131 Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| A | 235 min | 400 – 520 | 22 min |
| B | 235 min | 400 – 520 | 22 min |
| D | 235 min | 400 – 520 | 22 min |
| E | 235 min | 400 – 520 | 22 min |
| AH32 | 315 min | 440 – 590 | 22 min |
| DH32 | 315 min | 440 – 590 | 22 min |
| EH32 | 315 min | 440 – 590 | 22 min |
| AH36 | 355 min | 490 – 620 | 21 min |
| DH36 | 355 min | 490 – 620 | 21 min |
| EH36 | 355 min | 490 – 620 | 21 min |
Applications
- Ship hulls and decks
- Offshore platforms
- Marine structures
- Oil rigs and ship repairs
Reviews
There are no reviews yet.