Products Description
JIS G3445 Stkm11a Precision Steel Automobile Tubes
Why choose JIS G3445 precision steel pipe in the automotive industry?
- JIS G3445 precision steel tubes are manufactured by cold drawing to tight dimensional tolerances, ensuring consistent inside and outside diameters. This is critical for automotive components such as shock absorber cylinders, steering columns, and fuel systems, where the fit and function must be precise.
- STKM11A or STKM12A low-carbon grades ensure excellent weldability and avoid the risk of cracking in the heat-affected zone. They can be used for complex bends, flaring, etc., which are common in automotive parts manufacturing.
- For high-volume automotive production, JIS G3445 is often more economically viable. And JIS G3445 is the de facto standard for many Japanese and Korean automakers. It directly matches the automaker's design protocols and material databases, reducing the need for recertification or additional testing.
Applications of JIS G3445 Precision Steel Automobile Tubes
JIS G3445 Stkm11a Precision Steel Automobile Tubes find extensive application in various automotive components, including but not limited to:
- Suspension systems
- Steering columns
- Drive shafts
- Axles
- Chassis components
Chemical Composition
| Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
| Composition (%) | 0.12 - 0.20 | 0.15 - 0.35 | 0.60 - 0.90 | ≤ 0.040 | ≤ 0.040 |
Mechanical Properties
| Property | Tensile Strength | Yield Strength | Elongation | Hardness (HRB) |
| Value | 335 MPa min | 215 MPa min | 30% min | 75 max |
Physical Properties
| Property | Density | Thermal Conductivity | Specific Heat Capacity |
| Value | 7.85 g/cm³ | 52.9 W/(m·K) | 0.486 J/g·K |
Possible Alternative Grades
While Stkm11a is a popular choice for precision steel automobile tubes, there are alternative grades available depending on specific requirements. Some possible alternatives include:
Stkm12a
Stkm13a
Stkm14a
Each alternative grade may offer slightly different properties, allowing for customization based on application needs.
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