Automotive Grade SUP9 Spring Steel for Suspension Springs
MESCO supplies SUP9 spring steel, a JIS standard alloy steel widely adopted in automotive suspension systems. With excellent fatigue resistance and stable heat treatment performance, this grade supports the production of durable and reliable springs.
Key Selling Points
- Excellent fatigue resistance: Proven in long-term automotive suspension applications, reducing failure risks.
- Stable heat treatment response: Ensures consistent hardness and mechanical properties across batches.
- Automotive heritage: Our client in Poland, an automotive spring manufacturer, has used our steel for 15+ years.
- Versatile dimensions: Available in thickness 0.3-20mm and width 10-1500mm.
Technical Specifications
| Property | Value |
|---|
| Grade | SUP9 |
| Type | High Carbon Spring Steel |
| Thickness | 0.3mm – 20mm |
| Width | 10mm – 1500mm |
| Hardness | HRC 42 – 58 |
| Surface | Bright / Black / Polished |
| Standard | JIS |
Models and Options
SUP9 grade in strip, coil, or cut-to-length; black and polished finishes also available.
Materials and Structure
Alloy spring steel specifically formulated for automotive suspension.
Applications
Suspension springs, heavy-duty automotive springs, and machinery components requiring endurance.
Customization
Tailored widths, thicknesses, and packaging options for large volume orders.
Case Study
Automotive Spring Manufacturer (Poland) – Over 15 years, supplied 1,300 MT for suspension springs. The steel's high elasticity and stable heat treatment performance greatly improved spring durability and production consistency.
FAQ
What is the MOQ?
Flexible MOQ based on product, specification, and customer requirements.
How do you ensure quality?
We offer third-party inspection and factory quality inspection before shipment, plus material test reports.
What are your delivery methods?
Sea freight, land transport, container shipment, or customized logistics as per customer needs.
Inquiry Information
Contact Max: mesco@mescogroup.com.cn or +86 151-3456-5556 for a quote.
Image: SUP9 spring steel coil - alt: SUP9 spring steel coil for suspension springs - MESCO
