EN10216-2 P235GH Non-alloy Seamless Steel Tubes For Pressure Purposes
EN10216-2 P195GH P235GH P265GH 20MnNb6 16Mo3 Non-alloy Seamless Steel Tubes For Pressure Purposes
Material Specification
EN10216-2 is a European standard that specifies the technical delivery conditions for seamless steel tubes made from non-alloy and alloy steels with specified elevated temperature properties. These tubes are primarily used for pressure purposes, such as in the construction of boilers, pressure vessels, and pipelines.
Key Features
- High Temperature Resistance: Designed to withstand high temperatures, making them ideal for pressure applications.
- Durability: Offers excellent durability and long service life.
- Versatility: Suitable for a wide range of industrial applications.
- Compliance: Meets stringent European standards for quality and safety.
Chemical Composition
The chemical composition of these steel grades is crucial for their performance in high-temperature environments. Below is a table presenting the typical chemical composition for each grade:
| Element (%) | P195GH | P235GH | P265GH | 20MnNb6 | 16Mo3 |
|---|---|---|---|---|---|
| C | ≤ 0.20 | ≤ 0.16 | ≤ 0.20 | ≤ 0.20 | ≤ 0.12 |
| Si | ≤ 0.35 | ≤ 0.35 | ≤ 0.40 | ≤ 0.40 | ≤ 0.35 |
| Mn | 0.70-1.40 | 0.60-1.20 | 0.70-1.40 | 1.20-1.50 | 0.40-0.90 |
| P | ≤ 0.025 | ≤ 0.025 | ≤ 0.025 | ≤ 0.025 | ≤ 0.025 |
| S | ≤ 0.015 | ≤ 0.015 | ≤ 0.015 | ≤ 0.015 | ≤ 0.010 |
| Cr | - | - | - | - | 0.30-0.60 |
| Mo | - | - | - | - | 0.25-0.35 |
| Nb | - | - | - | 0.02-0.05 | - |
Mechanical Properties
The mechanical properties of these steel grades are essential for ensuring their performance under pressure. Below is a table presenting the typical mechanical properties for each grade:
| Property | P195GH | P235GH | P265GH | 20MnNb6 | 16Mo3 |
|---|---|---|---|---|---|
| Yield Strength (MPa) | ≥ 195 | ≥ 235 | ≥ 265 | ≥ 275 | ≥ 275 |
| Tensile Strength (MPa) | 320-440 | 360-500 | 410-570 | 450-600 | 440-590 |
| Elongation (%) | ≥ 24 | ≥ 25 | ≥ 23 | ≥ 22 | ≥ 22 |
Steel Grade
The EN10216-2 standard covers several steel grades, including:
- P195GH: Suitable for low-pressure applications.
- P235GH: Commonly used in the construction of pressure vessels.
- P265GH: Ideal for high-pressure applications.
- 20MnNb6: Known for its excellent strength and toughness.
- 16Mo3: Offers enhanced resistance to corrosion and high temperatures.
Application
These seamless steel tubes are widely used in various industries, including:
- Power Generation: Boilers and heat exchangers.
- Petrochemical: Pressure vessels and pipelines.
- Chemical Processing: High-temperature processing equipment.
- Oil and Gas: Transportation and storage of gases and liquids.
Possible Alternative Grades
Depending on specific requirements, alternative grades may be considered:
- ASTM A106 Grade B: A common alternative for seamless carbon steel pipes.
- ASTM A335 P11: Suitable for high-temperature service.
- DIN 17175: Another European standard for seamless steel tubes.
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