EN 10294-2 X2CrNi19-11 Hollow Round Bars Stainless Steel Seamless Pipe For Machining
EN 10294-2 X2CrNi19-11 X2CrNi18-9 X5CrNi18-10 X8CrNiS18-9 X2CrNiMo17-12-2 Hollow Round Bars Stainless Steel Seamless Pipe For Machining
Introduction
EN 10294-2 is a European standard that specifies the requirements for hollow round bars made of stainless steel, particularly for use in machining applications. This standard covers various grades of stainless steel, each with unique properties and applications.
Material
The hollow round bars specified under EN 10294-2 are primarily made from austenitic stainless steel grades, which are known for their excellent corrosion resistance, good mechanical properties, and ease of fabrication.
Specification
The specification includes dimensions, tolerances, and mechanical properties of the hollow round bars. These bars are typically used in the production of machined components, where strength and corrosion resistance are critical.
Key Features
- Corrosion Resistance: High resistance to oxidation and corrosion.
- Machinability: Suitable for various machining processes.
- Strength: Good tensile and yield strength.
- Weldability: Can be welded using standard techniques.
Chemical Composition
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| X2CrNi19-11 | 0.03 | 0.50 | 2.00 | 0.045 | 0.015 | 18.00 | 10.00 | - |
| X2CrNi18-9 | 0.03 | 0.50 | 2.00 | 0.045 | 0.015 | 17.00 | 9.00 | - |
| X5CrNi18-10 | 0.07 | 0.50 | 2.00 | 0.045 | 0.015 | 18.00 | 10.00 | - |
| X8CrNiS18-9 | 0.03 | 0.50 | 2.00 | 0.045 | 0.15 | 18.00 | 9.00 | - |
| X2CrNiMo17-12-2 | 0.03 | 0.50 | 2.00 | 0.045 | 0.015 | 17.00 | 12.00 | 2.00 |
Mechanical Properties
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| X2CrNi19-11 | 210 | 520 | 40 | 200 |
| X2CrNi18-9 | 210 | 500 | 40 | 190 |
| X5CrNi18-10 | 220 | 530 | 40 | 200 |
| X8CrNiS18-9 | 210 | 500 | 40 | 190 |
| X2CrNiMo17-12-2 | 250 | 600 | 35 | 220 |
Steel Grade
The grades covered under EN 10294-2 include:
- X2CrNi19-11
- X2CrNi18-9
- X5CrNi18-10
- X8CrNiS18-9
- X2CrNiMo17-12-2
Application
These hollow round bars are widely used in various industries, including:
- Automotive: Components such as shafts and fittings.
- Aerospace: Structural components requiring high strength and low weight.
- Chemical Processing: Equipment that must withstand corrosive environments.
- Food Industry: Equipment that requires high hygiene standards.
Possible Alternative Grades
While the grades specified in EN 10294-2 are commonly used, alternative grades may also be considered depending on specific requirements:
- AISI 304: Equivalent to X2CrNi18-9.
- AISI 316: Equivalent to X5CrNiMo17-12-2.
- AISI 303: Similar to X8CrNiS18-9 for improved machinability.
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