EN 10217-7 X2CrNi18-9, X2CrNi19-11, X2CrNiN18-10, X5CrNi18-10, X6CrNiTi18-10 Stainless Steel Tubes Welded Steel Tubes For Pressure Purposes
Material Specification
EN 10217-7 specifies the technical delivery conditions for welded steel tubes of circular cross-section, used for pressure purposes. The standard covers various grades of stainless steel, including X2CrNi18-9, X2CrNi19-11, X2CrNiN18-10, X5CrNi18-10, and X6CrNiTi18-10. These grades are known for their excellent corrosion resistance, high strength, and good weldability, making them suitable for a wide range of applications.
Key Features
- Corrosion Resistance: Excellent resistance to a wide range of corrosive environments.
- Strength: High tensile and yield strength.
- Weldability: Good weldability, suitable for various welding methods.
- Durability: Long-lasting performance in demanding conditions.
- Versatility: Suitable for various pressure applications.
Chemical Composition
| Grade | C (max) | Si (max) | Mn (max) | P (max) | S (max) | Cr | Ni | N (max) | Ti (max) |
| X2CrNi18-9 | 0.03 | 1.00 | 2.00 | 0.045 | 0.015 | 17.0-19.0 | 8.0-10.0 | 0.11 | - |
| X2CrNi19-11 | 0.03 | 1.00 | 2.00 | 0.045 | 0.015 | 18.0-20.0 | 10.0-12.0 | 0.11 | - |
| X2CrNiN18-10 | 0.03 | 1.00 | 2.00 | 0.045 | 0.015 | 17.0-19.0 | 8.0-10.0 | 0.10-0.16 | - |
| X5CrNi18-10 | 0.07 | 1.00 | 2.00 | 0.045 | 0.015 | 17.0-19.0 | 8.0-10.5 | - | - |
| X6CrNiTi18-10 | 0.08 | 1.00 | 2.00 | 0.045 | 0.015 | 17.0-19.0 | 10.0-12.0 | - | 5xC-0.70 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
| X2CrNi18-9 | ≥ 200 | 500-700 | ≥ 40 | ≤ 215 |
| X2CrNi19-11 | ≥ 200 | 500-700 | ≥ 40 | ≤ 215 |
| X2CrNiN18-10 | ≥ 220 | 520-720 | ≥ 40 | ≤ 215 |
| X5CrNi18-10 | ≥ 190 | 500-700 | ≥ 40 | ≤ 215 |
| X6CrNiTi18-10 | ≥ 190 | 500-700 | ≥ 35 | ≤ 215 |
Steel Grade
The steel grades covered under EN 10217-7 include:
- X2CrNi18-9
- X2CrNi19-11
- X2CrNiN18-10
- X5CrNi18-10
- X6CrNiTi18-10
These grades are primarily austenitic stainless steels, known for their excellent mechanical properties and corrosion resistance.
Application
These stainless steel tubes are used in various pressure applications, including:
- Chemical and Petrochemical Industry: For transporting corrosive substances.
- Food and Beverage Industry: For hygienic and corrosion-resistant piping.
- Pharmaceutical Industry: For sterile and corrosion-resistant applications.
- Oil and Gas Industry: For high-pressure and corrosive environments.
- Power Generation: For boiler and heat exchanger tubes.
Possible Alternative Grades
Depending on the specific requirements, the following alternative grades may be considered:
- 304/304L: Commonly used austenitic stainless steel with similar properties.
- 316/316L: Offers better corrosion resistance, especially against chlorides.
- 321: Similar to 304 but with added titanium for improved resistance to intergranular corrosion.
- 347: Similar to 321 but with added niobium for stabilization.
These alternative grades can be selected based on the specific environmental conditions and mechanical requirements of the application.
Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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