EN10305-1 E215 E235 E355 Seamless Cold Drawn Tubes For Precision Applications
Material
EN10305-1 is a European standard that specifies the requirements for seamless cold drawn tubes used in precision applications. The standard covers various steel grades, including E215, E235, and E355, which are designed to meet specific mechanical and chemical properties suitable for high-performance applications.
Specification
The specification outlines the dimensions, tolerances, and mechanical properties of the tubes. These tubes are typically used in applications requiring high precision and excellent surface finish, such as in the automotive and machinery industries.
Key Features
- Seamless Construction: Provides uniform strength and eliminates the risk of weld defects.
- Cold Drawn Process: Enhances dimensional accuracy and surface finish.
- High Precision: Suitable for applications requiring tight tolerances.
- Versatile Applications: Can be used in various industries, including automotive, aerospace, and manufacturing.
Chemical Composition
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
| E215 | 0.12 | 0.15 | 0.60 | 0.025 | 0.025 | 0.20 | 0.20 | 0.10 |
| E235 | 0.12 | 0.15 | 0.60 | 0.025 | 0.025 | 0.25 | 0.25 | 0.10 |
| E355 | 0.20 | 0.15 | 0.60 | 0.025 | 0.025 | 0.30 | 0.30 | 0.10 |
Mechanical Properties
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
| E215 | 215 | 350-450 | 25 | 120-160 |
| E235 | 235 | 360-480 | 22 | 130-170 |
| E355 | 355 | 470-630 | 20 | 140-180 |
Steel Grade
The EN10305-1 standard includes several steel grades, primarily E215, E235, and E355. Each grade is tailored for specific applications based on its mechanical properties and chemical composition.
Application
Seamless cold drawn tubes made from these steel grades are widely used in:
- Automotive Industry: For manufacturing components such as axles, shafts, and hydraulic cylinders.
- Machinery: In the production of precision parts that require high strength and durability.
- Construction: For structural applications where high load-bearing capacity is essential.
Possible Alternative Grades
While E215, E235, and E355 are commonly used, there are alternative grades that may be suitable depending on the application requirements:
- S235JR: A general structural steel grade with similar properties.
- S275JR: Offers higher yield strength and is used in structural applications.
- S355J2: Provides improved toughness and is suitable for heavy-duty applications.
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