Description
GOST 1577 Shipbuilding Steel Plate
GOST 1577 is a Russian standard that specifies shipbuilding steel plates used in the construction of marine vessels and offshore structures. These plates are designed to offer excellent strength, toughness, and corrosion resistance, making them suitable for harsh marine environments.
Key Features
- High Strength & Toughness – Ensures durability under extreme marine conditions.
- Good Weldability – Suitable for ship construction and repair work.
- Corrosion & Impact Resistance – Performs well in seawater and harsh environments.
- Standard Thickness & Sizes – Available in various dimensions to meet shipbuilding requirements.
Common Grades under GOST 1577:
- A, B, D, E – Ordinary-strength grades used in ship structures.
- AH32, DH32, EH32, FH32 – High-strength grades for offshore and structural applications.
- AH36, DH36, EH36, FH36 – Enhanced strength grades with better performance in extreme conditions.
GOST 1577 Properties
Mechanical Properties
| Grade |
Yield Strength (MPa) |
Tensile Strength (MPa) |
Elongation (%) |
Impact Energy (J, -20°C) |
| A |
≥235 |
400-520 |
≥22 |
– |
| B |
≥235 |
400-520 |
≥22 |
– |
| D |
≥235 |
400-520 |
≥22 |
≥27 |
| E |
≥235 |
400-520 |
≥22 |
≥27 |
| AH32 |
≥315 |
440-590 |
≥22 |
≥31 |
| DH32 |
≥315 |
440-590 |
≥22 |
≥31 |
| EH32 |
≥315 |
440-590 |
≥22 |
≥31 |
| FH32 |
≥315 |
440-590 |
≥22 |
≥31 |
| AH36 |
≥355 |
490-620 |
≥21 |
≥34 |
| DH36 |
≥355 |
490-620 |
≥21 |
≥34 |
| EH36 |
≥355 |
490-620 |
≥21 |
≥34 |
| FH36 |
≥355 |
490-620 |
≥21 |
≥34 |
Chemical Composition
| Grade |
C (Max) |
Si (Max) |
Mn |
P (Max) |
S (Max) |
Al (Min) |
Other Alloying Elements |
| A, B |
0.21 |
0.50 |
0.80-1.20 |
0.035 |
0.035 |
0.015 |
– |
| D, E |
0.21 |
0.35 |
0.60-1.20 |
0.035 |
0.035 |
0.015 |
Cu, Nb, V, Ti |
| AH/DH/EH/FH32 |
0.18 |
0.35 |
0.90-1.60 |
0.035 |
0.035 |
0.015 |
Cu, Nb, V, Ti |
| AH/DH/EH/FH36 |
0.18 |
0.35 |
0.90-1.60 |
0.035 |
0.035 |
0.015 |
Cu, Nb, V, Ti |
Dimensions
1. Thickness Range
- Voestalpine: 5–140 mm (varies by grade)
- Triton Alloys: 4–200 mm
- LR Shipbuilding: 3–150 mm
- AH36, DH36, EH36: Typically 1.5–30 mm, but some sources list up to 260 mm
2. Width Range
- Voestalpine: Up to 3,950 mm
- LR Shipbuilding: 1,220–4,200 mm
- AH36: Generally 100–3,500 mm, with some cases up to 4,020 mm
- DH36: Typically 1,500–4,020 mm
- EH36: Typically 1,200–4,000 mm
3. Length Range
- Voestalpine: Up to 18,700 mm
- LR Shipbuilding: 5,000–18,000 mm
- AH36: Can range from 200–12,000 mm, with some cases up to 18,000 mm
- DH36: Can range from 3,000–27,000 mm
- EH36: Can range from 3,000–18,000 mm
Applications:
- Shipbuilding (Hull structures, decks, bulkheads)
- Offshore platforms & marine engineering
- Oil rigs & floating structures
- Naval & commercial vessels
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