What is EN 10216-2 pipe material
Jul 04, 2025
EN 10216-2 is a special standard for seamless steel pipes for pressure in the European Union. It clearly specifies two types of materials: non-alloy steel and alloy steel, and is specifically used for pipeline systems under high temperature and pressure environments.
Material classification and typical grades
1. Non-alloy steel (carbon steel)
Grade range: P195GH, P235GH, P265GH, etc.
Features:
Applicable to medium and low pressure pipeline systems (such as heat exchangers and low pressure boilers) with a temperature of ≤350℃;
Low carbon design (such as P235GH carbon content ≤0.16%) ensures weldability and low temperature toughness.
2. Alloy steel (heat-resistant alloy)
Grade range:
Chromium-molybdenum steel: 13CrMo4-5 (1.7335), X10CrMoVNb9-1 (1.4903);
Nickel-copper-molybdenum steel: 15NiCuMoNb5-6-4 (WB36).
Features:
High temperature performance: long-term use temperature ≤ 620℃ (such as 1.4903), outstanding creep strength;
Strengthening elements: chromium (Cr 4-9.5%), molybdenum (Mo 0.45-1.05%), niobium (Nb), etc. improve corrosion resistance and thermal stability.
Core performance requirements
| Types | Applicable temperature | Intensity range | Key Process |
|---|---|---|---|
| non-alloyed Steel | ≤350℃ | tensile strength 360-630 MPa | Hot rolling/cold drawing+flaw detection |
| alloy steel | ≤620℃ | tensile strength 510-850 MPa | Quenching + tempering + non-destructive testing |
Main application areas
- Energy and power: supercritical boiler main steam pipeline (alloy steel), medium and low temperature header (non-alloy steel);
- Petrochemical: hydrogenation reactor pipeline (13CrMo4-5), high temperature heat exchanger (WB36);
- Nuclear power equipment: nuclear island cooling system pipeline (X10CrMoVNb9-1).
