Description
What is EN 10028-2 Pressure Vessel Steel Plate?
EN 10028-2 is a European standard specification for pressure vessel steel plates that are used in elevated temperature service. These steel plates are designed for welded pressure vessels and boilers, making them suitable for applications in industries such as petrochemical, oil and gas, power generation, and chemical processing.
Key Features of EN 10028-2 Steel Plates
- High-temperature resistance – Designed for elevated temperature applications.
- Good weldability – Suitable for welding processes.
- Excellent mechanical properties – Ensures strength and durability.
Grades of EN 10028-2 Pressure Vessel Steel Plates
This standard includes several grades, with different chemical compositions and mechanical properties. Some commonly used grades include:
- P235GH – Non-alloy quality steel with good heat resistance.
- P265GH – Suitable for moderate to high-temperature applications.
- 16Mo3 – Molybdenum-alloyed steel with high-temperature strength.
- 13CrMo4-5 – Chromium-Molybdenum alloyed steel with enhanced creep resistance.
- 10CrMo9-10 – High-temperature steel with superior strength.
Chemical Composition
| Grade | C (max) | Si (max) | Mn | P (max) | S (max) | Cr | Mo | Ni | Other Elements |
|---|---|---|---|---|---|---|---|---|---|
| P235GH | 0.16 | 0.35 | 0.60–1.20 | 0.025 | 0.015 | – | – | – | Cu: 0.30 (max) |
| P265GH | 0.20 | 0.40 | 0.80–1.40 | 0.025 | 0.015 | – | – | – | Cu: 0.30 (max) |
| 16Mo3 | 0.12–0.20 | 0.35 | 0.40–0.90 | 0.025 | 0.010 | – | 0.25–0.35 | – | V: 0.02–0.08 |
| 13CrMo4-5 | 0.08–0.15 | 0.35 | 0.40–0.70 | 0.025 | 0.010 | 0.70–1.15 | 0.40–0.60 | – | – |
| 10CrMo9-10 | 0.08–0.15 | 0.50 | 0.40–0.90 | 0.025 | 0.010 | 2.00–2.50 | 0.90–1.10 | – | – |
Physical Properties
| Property | P235GH | P265GH | 16Mo3 | 13CrMo4-5 | 10CrMo9-10 |
|---|---|---|---|---|---|
| Density (g/cm³) | 7.85 | 7.85 | 7.85 | 7.85 | 7.85 |
| Melting Point (°C) | ~1420 | ~1420 | ~1420 | ~1420 | ~1420 |
| Thermal Conductivity (W/m·K) at 20°C | 46 | 42 | 38 | 31 | 30 |
| Specific Heat Capacity (J/kg·K) at 20°C | 460 | 460 | 460 | 460 | 460 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| P235GH | 235 | 360–480 | 25 |
| P265GH | 265 | 410–530 | 23 |
| 16Mo3 | 275 | 450–600 | 22 |
| 13CrMo4-5 | 290 | 440–590 | 22 |
| 10CrMo9-10 | 280 | 480–630 | 22 |
Applications
- Manufacturing of boilers and heat exchangers
- Pressure vessels in petrochemical and refinery plants
- Storage tanks for high-temperature liquids and gases
- Industrial steam piping systems
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