Description
EN 10305-1 E215 E235 E355 Seamless Cold Drawn Tubes
Material
EN 10305-1 specifies the requirements for seamless cold drawn tubes made from carbon steel, which are primarily used in mechanical engineering and structural applications. These tubes are characterized by their excellent dimensional accuracy and surface finish.
Specification
The standard outlines the specifications for various grades of seamless cold drawn tubes, including E215, E235, and E355. Each grade has distinct mechanical properties and chemical compositions, making them suitable for different applications.
Key Features
- Seamless Construction: Provides higher strength and reliability compared to welded tubes.
- Cold Drawn Process: Enhances dimensional accuracy and surface finish.
- Versatile Applications: Suitable for various industries, including automotive, construction, and machinery.
Chemical Composition
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| E215 | 0.12 | 0.15 | 0.60 | 0.025 | 0.025 | – | – | – |
| E235 | 0.12 | 0.15 | 0.60 | 0.025 | 0.025 | – | – | – |
| E355 | 0.20 | 0.15 | 1.60 | 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 | 24 | 120-160 |
| E235 | 235 | 360-480 | 22 | 130-170 |
| E355 | 355 | 470-630 | 20 | 150-190 |
Steel Grade
- E215: Suitable for general engineering applications.
- E235: Offers higher strength and is used in structural applications.
- E355: Provides the highest strength and is ideal for high-stress applications.
Application
Seamless cold drawn tubes are widely used in various applications, including:
- Automotive Industry: For manufacturing components like axles and chassis.
- Construction: In structural frameworks and scaffolding.
- Machinery: For hydraulic cylinders and other mechanical components.
Possible Alternative Grades
- S235: A structural steel grade with similar properties.
- S275: Offers higher strength and is used in construction.
- S355: A high-strength structural steel grade suitable for demanding applications.
