DIN 17175 13CrMo44 and 13CrMo4-5 Alloy Seamless Steel Tubes: High-Performance Tubing for Industrial Applications
1. Product Description: DIN 17175 13CrMo44 and 13CrMo4-5 Alloy Seamless Steel Tubes are engineered for demanding industrial applications that require high strength and resistance to high temperatures and pressures. These tubes are manufactured from alloy steel that is seamless, ensuring uniform wall thickness and superior structural integrity. The 13CrMo44 and 13CrMo4-5 grades offer excellent creep resistance and good weldability, making them suitable for applications such as boiler tubes and heat exchangers.
2. Product Parameters:
Parameter | Description |
Grades | DIN 17175 13CrMo44 and 13CrMo4-5 |
Material | Alloy Steel (Seamless) |
Standard | DIN 17175 |
Size Range | Various diameters and wall thicknesses as per DIN 17175 |
Length | Standard lengths, customizable upon request |
Ends | Plain ends, beveled ends, threaded, or socket-weld ends |
Surface Treatment | As-rolled, annealed, or normalized |
3. Mechanical Properties:
Property | 13CrMo44 Requirement | 13CrMo4-5 Requirement |
Tensile Strength | ≥440 MPa | ≥440 MPa |
Yield Strength | ≥295 MPa | ≥295 MPa |
Elongation | ≥20% | ≥20% |
Hardness | Varies depending on heat treatment | |
4. Chemical Composition:
Element | 13CrMo44 Range (%) | 13CrMo4-5 Range (%) |
Carbon | 0.10 - 0.18 | 0.08 - 0.16 |
Chromium | 0.40 - 0.70 | 0.40 - 0.70 |
Molybdenum | 0.40 - 0.60 | 0.40 - 0.60 |
Manganese | ≤1.00 | ≤1.00 |
Phosphorus | ≤0.025 | ≤0.025 |
Sulfur | ≤0.025 | ≤0.025 |
5. Product Applications:
- Boiler Tubes: Used for steam generation in high-pressure boilers.
- Heat Exchangers: Ideal for use in heat exchangers operating under high pressure and temperature.
- Superheater Tubes: Employed in superheater sections to raise steam temperature.
- Pressure Vessels: Suitable for construction of high-pressure vessels and reactors.
- Gas and Oil Industry: Utilized in pipelines and equipment for oil and natural gas transport in high-temperature environments.
6. Product Advantages:
- Seamless Construction: Provides a consistent material structure and eliminates potential seam-related failures.
- High-Temperature Resistance: Alloy steel offers excellent resistance to high temperatures and thermal cycling.
- Creep Resistance: Designed to resist deformation under prolonged exposure to heat.
- Weldability: The 13CrMo44 and 13CrMo4-5 grades have good weldability, facilitating easy integration into various systems.
- Corrosion Resistance: Enhanced resistance to corrosion and oxidation due to the alloy content.
7. Conclusion: DIN 17175 13CrMo44 and 13CrMo4-5 Alloy Seamless Steel Tubes are engineered to provide reliable performance in high-temperature and high-pressure environments. Their seamless design and alloy composition ensure a combination of strength, ductility, and corrosion resistance that is necessary for demanding applications. These tubes offer a durable and cost-effective solution for industries such as power generation, petrochemical, and heavy machinery.


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