Description
GOST 19281 Steel Plate
GOST 19281 steel plates are high-strength, low-alloy structural steel plates designed for demanding industrial applications. These plates offer excellent mechanical properties, superior weldability, and high resistance to impact and atmospheric corrosion.
Key Features
- Steel Types: Low-alloy structural steels with enhanced strength and toughness.
- Mechanical Properties: High yield strength, good impact resistance, and weldability.
- Heat Treatment: Normalized, quenched and tempered, or thermomechanical processing.
- Application: Used in heavy machinery, bridges, pressure vessels, and oil & gas industries.
Common Grades Under GOST 19281:
- 09G2S – A widely used grade with good weldability and strength.
- 10HSND – Offers high resistance to atmospheric corrosion.
- 12H2N4A – High-strength structural steel for demanding environments.
- 15H2NMFA – Used in critical applications like pressure vessels and pipelines.
GOST 19281 Properties
Chemical Composition
| Grade | C (Max) | Si | Mn | P (Max) | S (Max) | Cr | Ni | Mo | Cu | Nb | V | Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 09G2S | 0.12 | 0.55 | 1.2-1.6 | 0.030 | 0.030 | – | – | – | – | – | 0.05 | – |
| 10HSND | 0.10 | 0.55 | 1.0-1.4 | 0.025 | 0.025 | 0.30 | – | – | 0.20 | – | 0.10 | – |
| 15H2NMFA | 0.15 | 0.40 | 0.50-0.80 | 0.025 | 0.025 | 1.0-1.5 | 0.40-0.80 | 0.20-0.40 | – | – | 0.10 | 0.02 |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1,420–1,460°C |
| Thermal Conductivity | 40-50 W/m·K |
| Electrical Resistivity | 0.2-0.3 µΩ·m |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Toughness (J, -40°C) | Hardness (HB) |
|---|---|---|---|---|---|
| 09G2S | 345-390 | 490-620 | ≥20 | ≥27 | 140-180 |
| 10HSND | 350-420 | 520-650 | ≥18 | ≥34 | 150-190 |
| 15H2NMFA | 450-550 | 650-800 | ≥16 | ≥45 | 170-210 |
Applications:
- Heavy machinery and construction equipment
- Bridges and structural components
- Pressure vessels and storage tanks
- Oil & gas pipelines and offshore platforms
- Mining and industrial equipment
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