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Carbon,alloy,stainless Steel
as per request (DIN 2391; GB/T 8162; EN 10305; ASTM A519;JIS G3445; ASTM A269 A213 A312;etc)
as per request (ST35/45/52; 10#/20#/30; E215/235/255/355; 1010/4130/42CrMo; STKM11A; etc)
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Detailed Image
Description
Due to the particularity of automobile materials, the steel pipes used are required to be beautiful in appearance, light in weight, safe in driving, stable and reliable.
In order to ensure the service life of steel pipes for automobiles, the steel pipe material is required to have good corrosion resistance and a certain period of service life. Therefore, according to the different parts used, there are strict requirements for the material, dimensional accuracy, mechanical performance, technological performance and surface quality of steel pipes for automobiles.
Some special products also have corresponding requirements for the wear resistance, fatigue resistance and welding performance of steel pipes. In many cases, good welding performance, good reprocessing performance and heat treatment performance are required. Steel pipes with surface plating and coating requirements in some final parts are required to be delivered in bright heat treatment state.
For example, for the sake of dynamic balance, it is required that the wall thickness of steel pipes used for automobile transmission shafts be uniform, have good fatigue resistance, and reach a certain static torque value; For the shock absorber cylinder tube, not only the ovality of the inner hole and the roughness of the inner surface are strictly required, but also the inner surface is required to have good wear resistance; For the steering link, good cold extrusion processing performance is required; For car pipes, they are required to be delivered in bright heat treatment state.
Application Areas
Fuel Injection Systems: Integral to fuel injection systems in gasoline and diesel engines, this precision steel tube ensures precise fuel delivery, optimal combustion efficiency, and emissions control, contributing to enhanced engine performance and fuel economy.
Hydraulic Brake Lines: Used in hydraulic brake systems, including disc brakes and drum brakes, this tubing facilitates efficient transmission of brake fluid pressure, ensuring reliable braking performance and vehicle safety.
Steering Columns: Integrated into steering columns and power steering systems, this precision steel tube supports responsive steering control, smooth operation, and vehicle maneuverability, enhancing driver comfort and safety on the road.
Suspension Components: Employed in suspension systems, such as shock absorbers and struts, this tubing provides structural support and damping characteristics, ensuring vehicle stability, ride comfort, and handling dynamics in diverse driving conditions.
Standard
| Material Chemical Composition (%) | |||||||||
| Standard | Steel Grade | Material Number | C | Si | Mn | P | S | Cr | Mo |
| DIN 2391 | ST35 | 1.0308 | <= 0.17 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - |
| ST45 | 1.0408 | <= 0.21 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - | |
| ST52 | 1.058 | <= 0.22 | <= 0.55 | <=1.60 | <=0.025 | <=0.025 | - | - | |
| BK | BKW | BKS | GBK | ||||||
| Steel Grade | Rm Tensile Strength (Mpa) Min | A Elongation(%) Min | Rm Tensile Strength (Mpa) Min | A Elongation(%) Min | Rm Tensile Strength (Mpa) Min | Rel Yield Strength(Mpa) Min | A Elongation (%) Min | Rm Tensile Strength (Mpa)Min | A Elongation (%)Min |
| ST35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 |
| ST45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 |
| ST52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 |
| Standard | Steel Grade | Material Number | C | Si | Mn | P | S | Cr | Mo |
| EN10305-1 EN10305-4 | E235 | 1.0308 | <= 0.17 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - |
| E255 | 1.0408 | <= 0.21 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - | |
| E355 | 1.058 | <= 0.22 | <= 0.55 | <=1.60 | <=0.025 | <=0.025 | - | - |
Many other steel grades and customized - modified steel grades are available on request
Conclusion
DIN2391 EN10305 Precision steel tubes are high quality seamless steel tubes specially designed for the automotive industry. They meet the strict standards of DIN2391 and EN10305, ensuring high precision and reliability. These steel pipes are made of high-quality carbon steel materials, processed by precision cold drawing process, with fine internal and external surfaces and uniform wall thickness. This product family is suitable for automotive chassis, engine suspension systems and other critical components requiring high precision and strength.
Detailed Image
Description
Due to the particularity of automobile materials, the steel pipes used are required to be beautiful in appearance, light in weight, safe in driving, stable and reliable.
In order to ensure the service life of steel pipes for automobiles, the steel pipe material is required to have good corrosion resistance and a certain period of service life. Therefore, according to the different parts used, there are strict requirements for the material, dimensional accuracy, mechanical performance, technological performance and surface quality of steel pipes for automobiles.
Some special products also have corresponding requirements for the wear resistance, fatigue resistance and welding performance of steel pipes. In many cases, good welding performance, good reprocessing performance and heat treatment performance are required. Steel pipes with surface plating and coating requirements in some final parts are required to be delivered in bright heat treatment state.
For example, for the sake of dynamic balance, it is required that the wall thickness of steel pipes used for automobile transmission shafts be uniform, have good fatigue resistance, and reach a certain static torque value; For the shock absorber cylinder tube, not only the ovality of the inner hole and the roughness of the inner surface are strictly required, but also the inner surface is required to have good wear resistance; For the steering link, good cold extrusion processing performance is required; For car pipes, they are required to be delivered in bright heat treatment state.
Application Areas
Fuel Injection Systems: Integral to fuel injection systems in gasoline and diesel engines, this precision steel tube ensures precise fuel delivery, optimal combustion efficiency, and emissions control, contributing to enhanced engine performance and fuel economy.
Hydraulic Brake Lines: Used in hydraulic brake systems, including disc brakes and drum brakes, this tubing facilitates efficient transmission of brake fluid pressure, ensuring reliable braking performance and vehicle safety.
Steering Columns: Integrated into steering columns and power steering systems, this precision steel tube supports responsive steering control, smooth operation, and vehicle maneuverability, enhancing driver comfort and safety on the road.
Suspension Components: Employed in suspension systems, such as shock absorbers and struts, this tubing provides structural support and damping characteristics, ensuring vehicle stability, ride comfort, and handling dynamics in diverse driving conditions.
Standard
| Material Chemical Composition (%) | |||||||||
| Standard | Steel Grade | Material Number | C | Si | Mn | P | S | Cr | Mo |
| DIN 2391 | ST35 | 1.0308 | <= 0.17 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - |
| ST45 | 1.0408 | <= 0.21 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - | |
| ST52 | 1.058 | <= 0.22 | <= 0.55 | <=1.60 | <=0.025 | <=0.025 | - | - | |
| BK | BKW | BKS | GBK | ||||||
| Steel Grade | Rm Tensile Strength (Mpa) Min | A Elongation(%) Min | Rm Tensile Strength (Mpa) Min | A Elongation(%) Min | Rm Tensile Strength (Mpa) Min | Rel Yield Strength(Mpa) Min | A Elongation (%) Min | Rm Tensile Strength (Mpa)Min | A Elongation (%)Min |
| ST35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 |
| ST45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 |
| ST52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 |
| Standard | Steel Grade | Material Number | C | Si | Mn | P | S | Cr | Mo |
| EN10305-1 EN10305-4 | E235 | 1.0308 | <= 0.17 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - |
| E255 | 1.0408 | <= 0.21 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - | |
| E355 | 1.058 | <= 0.22 | <= 0.55 | <=1.60 | <=0.025 | <=0.025 | - | - |
Many other steel grades and customized - modified steel grades are available on request
Conclusion
DIN2391 EN10305 Precision steel tubes are high quality seamless steel tubes specially designed for the automotive industry. They meet the strict standards of DIN2391 and EN10305, ensuring high precision and reliability. These steel pipes are made of high-quality carbon steel materials, processed by precision cold drawing process, with fine internal and external surfaces and uniform wall thickness. This product family is suitable for automotive chassis, engine suspension systems and other critical components requiring high precision and strength.
