E355 Precision Cold Drawn Tube
E355 Precision Cold Drawn Tube
EN 10305-1 is a European standard that specifies the technical delivery conditions for precision cold drawn seamless steel tubes used in hydraulic and pneumatic systems. E355 is a non-alloy steel grade under this standard, known for its high strength, precision dimensions, and excellent surface quality. E355 precision cold drawn tubes are widely used in applications requiring tight tolerances, smooth surfaces, and reliable mechanical properties.
Advantages
1. High Precision: Manufactured to tight tolerances, ensuring consistent dimensions and fit.
2. High Strength: E355 grade provides excellent mechanical properties, making it suitable for high-stress applications.
3. Cost-Effective: Reduced need for additional machining or finishing lowers overall production costs.
4. Durability: Resistant to wear, corrosion, and deformation, ensuring long service life.
5. Versatility: Suitable for a wide range of applications, including hydraulic cylinders, pneumatic cylinders, and precision engineering components.
EN 10305-1 E355 precision cold drawn tubes are engineered to meet the highest standards of dimensional accuracy, surface finish, and mechanical performance. Their combination of strength, precision, and durability makes them an ideal choice for demanding applications in hydraulic, pneumatic, automotive, and general engineering industries. Whether for high-pressure systems or precision components, E355 tubes deliver reliable performance and long-lasting quality.
Material Composition
| Element | Composition |
|---|---|
| Carbon (C) | ≤ 0.22% |
| Silicon (Si) | ≤ 0.55% |
| Manganese (Mn) | 1.00 – 1.60% |
| Phosphorus (P) | ≤ 0.025% |
| Sulfur (S) | ≤ 0.025% |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength | ≥ 450 MPa |
| Tensile Strength | ≥ 580 MPa |
| Elongation | ≥ 10% |
Delivery Conditions
| Designation | Symbol | Description |
| Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and thus have a rather high resistance to deformation. |
| Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation.Appropriate further processing allows a certain degree of cold forming(e.g.bending,expanding). |
| Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process.Subject to appropriate processing conditionsthe increase in the residual stresses involved enables both forming and machining to a certain degree. |
| Annealed | GBK | The last cold forming process is followed by annealing in a controlled atmosphere |
| Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Delivery Condition: SR,BK, BK+S, GBK, NBK
ID Size : 20mm – 1500mm
Length: max 16m
Type: Seamless, Hot Rolled, Cold Rolled, Cold Drawn
Straightness: ≤ 0.5/1000
Tolerance EXT: EN10305-1
Tolerance: As request
Protection: Anti-rust oil on inside and outside surface, plastic caps in both ends.
Packing: Bundle with steel strip and PE sheet or Plywood case
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