Precision E355 Carbon Steel Tube EN10305-2 Standard Cold Drawn Process Thin-Wall Design for Automotive Systems
Price:
Negotiable
MOQ:
1 ton
Delivery Time:
Within 50 days if production
Brand:
Hongbao
Product Description
Precision E355 Carbon Steel Tube (EN10305-2) for Automotive Systems
Manufactured in strict compliance with the EN10305-2 standard, this precision tube utilizes E355 grade carbon steel known for its excellent weldability and high yield strength. Through the cold drawing process, the tube achieves superior dimensional accuracy and a smooth surface finish, while maintaining a thin-wall design to reduce vehicle weight. It is widely used in automotive chassis systems, seat frames, shock absorbers, and stabilizer bars.
Technical Specifications
- Material: E355
- Other Available Materials: E155, E195, E235, E275
- Outer Diameter Range: 10-50mm
- Wall Thickness Range: 1.5-8mm
- t/D Ratio: ≥ 0.2 (Normal: t/D=0.1)
- Standard: EN10305-2
- Process: Cold Drawn, Cold Rolling
Typical Specification
| Grade | Welding Typical Specification | Yield Strength |
|---|---|---|
| 3 | E355 | Φ38×4.5 | 355～450 MPa |
Chemical Composition
| Steel Number | Quality Level | Thickness/mm | Deoxidize Method | C(%)≤ | Si(%)≤ | Mn(%)≤ | P(%)≤ | S(%)≤ |
|---|---|---|---|---|---|---|---|---|
| E235(Fe360) | A | ≤16 | N | 0.22 | - | - | 0.050 | 0.050 |
| B | ＞16-25 | - | 0.17 | 0.40 | 1.40 | 0.045 | 0.045 | |
| C | ≤40 | - | 0.20 | 0.40 | 1.40 | 0.045 | 0.045 | |
| D | ＞40 | E | 0.17 | 0.40 | 1.40 | 0.045 | 0.045 | |
| - | - | NE | 0.20 | 0.40 | 1.40 | 0.040 | 0.040 | |
| - | - | NE | 0.17 | 0.40 | 1.40 | 0.035 | 0.035 | |
| - | - | GF | 0.17 | 0.40 | 1.40 | 0.035 | 0.035 |
Yield Strength
| Steel Number | Yield Strength/MPa | ≤16 | ＞16-40 | ＞40-63 | ＞63-80 | ＞80-100 | ＞100-150 | ＞150-200 |
|---|---|---|---|---|---|---|---|---|
| E355(Fe510) | C | 355 | 345 | 335 | 325 | 315 | 295 | 285 |
| E355(Fe510) | D | 355 | 345 | 335 | 325 | 315 | 295 | 285 |
Delivery Conditions
- +C: No heat treatment after the final cold drawing process
- +LC: After the final heat treatment there is a suitable drawing pass
- +SR: After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere
- +A: After the final cold drawing process the tubes are annealed in a controlled atmosphere
- +N: After the final cold drawing operation the tubes are normalized in a controlled atmosphere
Advantages Over Seamless Cold Drawn Tubes
- Better shape and dimensional consistency
- Improved quality surface finish
- Tight eccentricity and wall thickness tolerances
- Enhanced safety performance
- Good toughness at low temperatures
- 90% of cylinders in the USA market are produced with welded tubes
- Cost-effective fixed lengths
Packaging
Seaworthy plywood case packaging
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Get in Touch
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Company
Jiangsu Hongbao Group Co., Ltd.
Location
DAXIN TOWN,ZHANGJIAGANG,JIANGSU P.R.CHINA
Contact Person
Angela