EN 10216-2 13CrMo4-5 Seamless Alloy Steel Pipes Tube
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EN 10216-2
Seamless steel tubes for pressure purposes .
This Part of EN 10216 specifies the technical delivery conditions in two test categories for seamless tubes of circular cross section, with specified elevated temperature properties, made of non-alloy and:alloy steel.
The EN 10216-2 13CrMo4-5 seamless alloy steel tube is a high-performance material used primarily in high-temperature and high-pressure environments. This material is known for its excellent mechanical properties, heat resistance, and good corrosion resistance, making it a preferred choice for boiler systems, heat exchangers, and pressure vessels.
1.7335 ,13CrMo4-5 is a low-alloy steel with chromium (Cr) and molybdenum (Mo) as its primary alloying elements. It is designed for applications requiring strength and resistance to creep at elevated temperatures.
The EN 10216-2 13CrMo4-5 seamless alloy steel tube is a high-performance material used primarily in high-temperature and high-pressure environments. This material is known for its excellent mechanical properties, heat resistance, and good corrosion resistance, making it a preferred choice for boiler systems, heat exchangers, and pressure vessels.
Chemical composition % of steel 13CrMo4-5 (1.7335): EN 10028-2-2003
| According EN 10216-2 chemical composition: 0.1 < C < 0.17; 0.4 < Mn < 0.7; |
| C | Si | Mn | P | S | Cr | Mo | N | Cu |
| 0.08 – 0.18 | max 0.35 | 0.4 – 1 | max 0.025 | max 0.01 | 0.7 – 1.15 | 0.4 – 0.6 | max 0.012 | max 0.3 |
Mechanical Properties of 13CrMo4-5
The mechanical properties of 13CrMo4-5 comply with the EN 10216-2 standard.
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 450–600 MPa |
| Yield Strength (ReH) | ≥ 280 MPa |
| Elongation (A) | ≥ 20% |
| Impact Toughness (KV) | ≥ 27 J (at 20°C) |
| Hardness (HB) | ≤ 250 |
These properties make the material suitable for extreme conditions involving high temperatures and pressures.
Heat Treatment
To optimize its properties, 13CrMo4-5 seamless tubes undergo the following heat treatments:
- Normalizing: Heated to 900–950°C, followed by air cooling.
- Tempering: Heated to 650–750°C to relieve internal stresses and improve toughness.
- Annealing (Optional): Used for better machinability or forming.
Dimensional Range (EN 10216-2)
The EN 10216-2 standard specifies dimensions for seamless tubes.
| Parameter | Range |
|---|---|
| Outer Diameter | 10.2 mm – 711 mm |
| Wall Thickness | 1.6 mm – 100 mm |
| Length | Up to 14 meters |
Applications of EN 10216-2 13CrMo4-5 Pipes
13CrMo4-5 seamless tubes are commonly used in:
- Power Plants:
- Petrochemical Industry:
- Pressure Vessels:
- Chemical Plants:
Equivalent grade of 13CrMo4-5
The material 13CrMo4-5 is internationally recognized, and its equivalents in other standards include:
| Standard | Equivalent Grade |
|---|---|
| ASTM (USA) | A335 Grade P11 |
| DIN (Germany) | 13CrMo44 |
| JIS (Japan) | SCMV4 |
| GOST (Russia) | 12CrMo |
Quality Inspection and Testing
Tubes made from 13CrMo4-5 are subjected to stringent quality control measures, including:
- Chemical Analysis: Verifies compliance with material composition.
- Mechanical Testing:
- Tensile and yield strength
- Elongation
- Impact toughness
- Non-Destructive Testing (NDT):
- Ultrasonic testing
- Eddy current testing
- Hydrostatic Testing: Ensures the tube can withstand operational pressures.
- Dimensional Inspection: Confirms adherence to specified tolerances.
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