Material and Specification
EN10216-2 is a European standard for alloy steel tubes, specifically focusing on seamless steel tubes. This standard provides technical delivery conditions for non-alloy and alloy steel tubes with specified elevated temperature properties. It specifies various grades of seamless steel tubes for use in the petroleum, chemical, power generation, and mechanical industries.
The materials used for these tubes include both non-alloy and alloy steels, ensuring their suitability for operation at high temperatures. The most commonly used materials in EN10216-2 alloy steel tubes are listed below:
| Material Grade | Chemical Composition |
| P195GH | C: ≤0.13, Mn: ≤0.70, Si: ≤0.35, P: ≤0.025, S: ≤0.020, Cr: ≤0.30, Ni: ≤0.30, Cu: ≤0.30, Mo: ≤0.08, V: ≤0.02 |
| P235GH | C: ≤0.16, Mn: ≤1.20, Si: ≤0.35, P: ≤0.025, S: ≤0.020, Cr: ≤0.30, Ni: ≤0.30, Cu: ≤0.30, Mo: ≤0.08, V: ≤0.02 |
| P265GH | C: ≤0.20, Mn: ≤1.40, Si: ≤0.40, P: ≤0.025, S: ≤0.020, Cr: ≤0.30, Ni: ≤0.30, Cu: ≤0.30, Mo: ≤0.08, V: ≤0.02 |
| 16Mo3 | C: ≤0.12, Mn: ≤0.40, Si: ≤0.35, P: ≤0.025, S: ≤0.020, Cr: ≤0.30, Ni: ≤0.30, Cu: ≤0.30, Mo: ≤0.30, V: ≤0.02 |
| 14MoV6-3 | C: 0.10-0.16, Mn: 0.40-0.70, Si: 0.10-0.35, P: ≤0.025, S: ≤0.020, Cr: 0.90-1.20, Mo: 0.35-0.50, V: ≤0.02 |
| 10CrMo5-5 | C: 0.12-0.17, Mn: 0.40-0.70, Si: 0.10-0.35, P: ≤0.025, S: ≤0.020, Cr: 1.00-1.50, Mo: 0.45-0.65 |
| 13CrMo4-5 | C: 0.08-0.18, Mn: 0.40-0.70, Si: 0.10-0.35, P: ≤0.025, S: ≤0.020, Cr: 0.70-1.15, Mo: 0.40-0.60 |
| 10CrMo9-10 | C: 0.08-0.14, Mn: 0.30-0.70, Si: ≤0.50, P: ≤0.025, S: ≤0.020, Cr: 2.00-2.50, Mo: 0.90-1.10 |
| 11CrMo9-10 | C: 0.08-0.15, Mn: 0.30-0.70, Si: ≤0.50, P: ≤0.025, S: ≤0.020, Cr: 1.80-2.20, Mo: 0.90-1.10, N: ≤0.012 |
| 25CrMo4 | C: 0.22-0.29, Mn: 0.60-0.90, Si: ≤0.40, P: ≤0.025, S: ≤0.020, Cr: 0.90-1.20, Mo: 0.15-0.30, Nb: ≤0.04 |
Note: The chemical composition values mentioned above are in percentage by mass.
Mechanical Properties
EN10216-2 alloy steel tubes exhibit excellent mechanical properties, allowing them to withstand high temperatures and pressures. The mechanical properties of various material grades conforming to this standard are shown below:
| Material Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Energy (J) |
| P195GH | ≥195 | 320-440 | ≥27 | ≥40 |
| P235GH | ≥235 | 360-500 | ≥25 | ≥28 |
| P265GH | ≥265 | 410-570 | ≥23 | ≥27 |
| 16Mo3 | ≥280 | 450-600 | ≥22 | ≥40 |
| 14MoV6-3 | ≥290 | 490-660 | ≥20 | ≥40 |
| 10CrMo5-5 | ≥295 | 440-590 | ≥22 | ≥40 |
| 13CrMo4-5 | ≥295 | 440-590 | ≥22 | ≥40 |
| 10CrMo9-10 | ≥310 | 480-630 | ≥20 | ≥40 |
| 11CrMo9-10 | ≥310 | 480-630 | ≥20 | ≥40 |
| 25CrMo4 | ≥355 | 520-670 | ≥21 | ≥40 |
Application
EN10216-2 alloy steel tubes find extensive application in various industries where seamless steel tubes with elevated temperature properties are required. Some of the common applications include:
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Boiler and Heat Exchanger Tubes: EN10216-2 tubes are widely used in power generation plants, refineries, and chemical processing industries for the fabrication of boiler tubes and heat exchanger tubes.
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High-temperature pipelines: These tubes are suitable for transporting hot gases and liquids in high-temperature environments, ensuring safe and efficient operation of pipelines.
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Pressure vessels: EN10216-2 alloy steel tubes are utilized in the construction of pressure vessels that are subjected to high temperatures and pressures.
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Mechanical engineering: They are employed in various mechanical engineering applications, such as machinery components, structural parts, and automotive components.
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