QSTE460TM is a high-strength hot-rolled steel supplied in the pickled condition, developed for automotive structural parts that carry high loads and power requirements. The designation indicates a minimum yield strength of 460 MPa in the "TM" (thermomechanically rolled) condition. The pickled surface removes the hot-rolled oxide scale, which improves cold forming behaviour and downstream processing.
Key Properties
| Property | Characteristic | Benefit |
|---|---|---|
| High strength | Minimum yield strength 460 MPa with corresponding high tensile strength | Supports high-load automotive structural parts with reduced section weight |
| Good plasticity | High elongation in the thermomechanically rolled condition | Easy forming and processing of complex shapes and curves |
| Excellent weldability | Low carbon equivalent designed for automotive assembly | Reliable welded connections with common welding methods |
| Cold formability | Suitable for cold stamping and cold drawing at room temperature | Manufacturing of complex parts without preheating |
Note: confirm the exact yield, tensile and elongation values for your ordered thickness with the mill test certificate; the grade is supplied per the applicable Chinese automotive-steel standard (e.g. GB/T 3273) or the mill's technical specification.
Typical Automotive Applications
1. Body Structural Parts
Body frames, beams, doors and roofs. The high strength of QSTE460TM provides the rigidity and strength required for the body structure, improving vehicle safety and stability.
2. Safety Components
Safety frames and collision energy-absorbing structures. The excellent plasticity and high strength enable outstanding energy absorption during collisions, protecting passengers inside the vehicle.
3. Suspension System Components
Suspension arms and spring seats. The high strength allows the suspension system to withstand greater loads while maintaining vehicle stability and driving comfort.
4. Power System Components
Engine bases and oil pans. High strength combined with good cold forming performance enables these parts to withstand high-temperature, high-pressure power-system environments and provide stable support and protection.
Why the Pickled Condition Matters
The hot-rolled pickled surface removes oxide scale before forming, which:
- improves surface quality of stamped and drawn parts;
- reduces die wear in forming operations;
- provides a cleaner base for subsequent painting or oiling.
Frequently Asked Questions
What does QSTE460TM mean?
QSTE indicates a high-strength automotive structural steel supplied in the hot-rolled condition; 460 denotes the minimum yield strength of 460 MPa; TM indicates the thermomechanically rolled condition.
What is the difference between pickled and unpickled hot-rolled steel?
Pickling removes the surface oxide scale, improving surface finish, cold forming behaviour and downstream processing; unpickled (black) hot-rolled steel retains the scale.
Can QSTE460TM be cold stamped?
Yes. QSTE460TM is designed for cold forming operations including cold stamping and cold drawing at room temperature, suitable for complex automotive parts.
Is QSTE460TM weldable?
Yes. It offers excellent welding performance with common welding methods, supported by its controlled composition for automotive assembly.
Which standard governs QSTE460TM?
Confirm the governing standard with your order - QSTE-series automotive steels are commonly supplied per GB/T 3273 or the mill's technical specification.
Ready to Secure Your QSTE460TM Supply?
We are a reliable supplier of QSTE460TM pickled coils and sheets, serving tier‑1 automotive suppliers and OEMs. We stock thicknesses from 2.0 mm to 8.0 mm and offer precision slitting and cut‑to‑length services per your blank dimensions.
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✅ A formal quote within 24 hours (including MTC pre‑review)
✅ Free 200×200 mm material samples (specify your thickness for trial stamping)
✅ 1‑on‑1 engineering support – we help assess if QSTE460TM suits your specific forming process
✅ First‑order technical support rebate (contact us for details)
GNEE STEEL is a professional steel supplier.Our global reach extends further through our strong network of dealers and customers. We have fostered long-term and stable cooperative relationships with partners across Europe, Asia, America, and Australia, exporting our products to over 100 countries. This extensive sales network is a testament to our commitment to global business expansion.
When inquiring, please specify: Required thickness, width, estimated annual volume, and part complexity (simple / complex) – so we can match stock and offer the best forming advice.
Our commitment: Every shipment comes with the original MTC – full chemical and mechanical traceability.
