Products Description
ASTM A519 Seamless Automotive Steel Tube
Why does ASTM A519 pipes have an advantage in the automotive industry?
1. Engine components are key components of automobiles, so it is crucial to choose a high-quality pipe. If there is a leak in the fuel injection system, it will cause various problems, and the seamless characteristics of ASTM A519 pipes can solve this problem well.
2. Shock absorbers are key components that connect wheels to the body, ensuring the smoothness of vehicle driving. Such pipes need to withstand huge pressure, and the 4140 grade alloy steel of ASTM A519 pipes has high tensile strength, which is enough to withstand huge pressure.
3. The drive shaft is a core component in the power transmission system of the automobile, and the precision of the pipe size is extremely high. ASTM A519 pipes can ensure the precise roundness and hardness required, and can effectively transmit power.
Application
ASTM A519 seamless automotive steel pipe is widely used in various automotive parts, as follows:
Suspension systems
Drive shafts
Steering columns
Chassis components
Hydraulic cylinders
Chemical Composition
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) |
| Composition (%) | 0.18-0.23 | 0.30-0.60 | 0.040 max | 0.040 max | 0.15-0.35 |
Mechanical Properties
| Property | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| Minimum Values | 580 MPa | 420 MPa | 10% (50mm gauge) | 150-200 HB |
Physical Properties
| Property | Density | Thermal Conductivity | Specific Heat Capacity |
| Value | 7.85 g/cm³ | 46.6 W/mK | 486 J/kg-K |
Possible Alternative Grades
While ASTM A519 offers a comprehensive range of grades suitable for automotive applications, some alternative grades that may be considered include:
SAE J524 for low-carbon steel tubing
DIN 2391 for precision steel tubes
JIS G3445 for carbon steel tubes for machine structural purposes
Packaging
Once the pipes have passed all inspections and tests, they are ready for packaging. They are usually packaged in bales wrapped in plastic. The pipes can be bundled and ready for delivery according to customer requirements, ensuring that the pipes are protected during transportation and prevent surface damage.
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