Ti-Stabilized Automobile Steel Coil for Catalytic Converter Shell with AISI 409

Product Description

Automobile Steel for Powertrain & Exhaust - Heat-Resistant Stainless & Aluminized Steel for High-Temperature Components

    CNB Group supplies automobile steel sheets and coils specifically engineered for powertrain and exhaust system components that must endure sustained high temperatures, thermal cycling, and corrosive combustion gases. Our automobile steel for exhaust applications includes ferritic stainless grades AISI 409 and 441 for manifolds and catalytic converter shells, austenitic AISI 304 for flexible couplings and EGR components, and titanium-stabilized AISI 321 for turbocharger housings and downpipes where temperatures exceed 800°C. For heat shield and thermal management applications, our aluminized automobile steel sheet (DX53D+AS, DX54D+AS) provides 550°C heat resistance with excellent thermal reflectivity at a lower cost than stainless steel. All exhaust-grade automobile steel is supplied with full chemical and mechanical certification, and can be slit to narrow widths for tube forming and roll forming operations. The ferritic stainless automobile steel offers good weldability and thermal fatigue resistance critical for modern exhaust systems.

Packaging & Shipping

 

 

Product Description

 

JSC440W (B280VK) 280MPa Bake-Hardening Steel

Engineered for Optimal Spare Tire Well Reinforcement in Modern Vehicles

 

Product Overview

JSC440W is a zinc-coated bake-hardening (BH) steel specifically formulated for automotive spare tire well reinforcements. Leveraging its unique post-paint strength increase (40-60MPa yield boost), it delivers superior dent resistance and crash energy management while enabling 20% weight reduction versus conventional mild steels. Compliant with global EV/ICE platform safety standards.

 

Certifications & Standards

System	Certification
Material	EN 10268 HX280BD JIS G 3135 SPFC440
Quality	IATF 16949 ISO 50001
Safety	GB 38031-2020 ECE R94
Eco-Compliance	REACH Annex XVII IMDS ID: 89324

 

Key Technical Specifications

Parameter	Value
As-Delivered YS (Rp0.2)	220-280 MPa
Post-Bake YS (170°C/20min)	260-340 MPa
Tensile Strength	350-430 MPa
Total Elongation (A80)	≥32%
Bake Hardening (BH2)	≥40 MPa
Coating Type/Mass	GI (60-90 g/m²)
Thickness Range	0.7-1.8 mm (±0.03 mm)
Width Range	900-1600 mm (±1 mm)

 

Core Engineering Advantages

1. Weight Reduction & Stiffness

• Thinning Potential: 0.96 mm replaces 1.2 mm mild steel → 0.8 kg/part savings

• Torsional Rigidity: 45% higher specific stiffness vs. DC04 (CAE-verified)

2. Enhanced Crash Safety

• Impact Protection: Reduces tire intrusion by 38% in 25 km/h rear collisions

• Energy Absorption: 15 kJ/m crush efficiency (FMVSS 223 compliant)

3. Superior Dent Resistance

• Critical Load: 550 N @ 3 mm dent depth (+65% vs. mild steel)

• Parking Load Durability: Withstands 100+ cycles of 300 N cyclic loading

4. Corrosion Defense

• Salt Spray Performance: <3% red rust after 1,200 hrs (ISO 9227)

• Edge Protection: Zn-rich primer compatibility at cut edges

 

Performance Benchmarking

Property	JSC440W	DC04 Mild Steel	Improvement
Dent Resistance (0.1mm)	210 N	140 N	+50%
Springback Angle	0.6°	2.2°	↓73%
Spot Welding Window	6.8-8.2 kA	7.0-9.0 kA	Wider by 15%
Paint Adhesion	Gt0 (ISO 2409)	Gt1	Higher grade

 

Validated Application: Nissan X-Trail T32 Rear Floor

Parameter	Value
Component	Spare tire well reinforcement frame
Thickness	1.0 mm
Process	5-stage progressive die stamping
Results	1.2 kg weight saving per vehicle
	99.3% production yield
	Zero field failures (5-year track)

 

Manufacturing Excellence

Process	Technology
Forming	≤12% stretch flangeability
Welding	2.5 kJ/mm heat input (no spatter)
Joining	Compatible with structural adhesives
Painting	Electrophoresis coating adherence

 

Sustainability Profile

• Carbon Footprint: 1.4 tCO2/t (EPD certified)

• Recycled Content: ≥30%

• Circular Economy: 100% recyclable per ISO 14021

 

Supply Chain Advantages

• Global Mill Network: POSCO (KR) Baosteel (CN) Nippon Steel (JP)

• Lead Time: 15 days expedited delivery (Asia-Pacific hubs)

• Traceability: Blockchain-based material passports

 

Why Automotive Engineers Specify JSC440W?

 Space Optimization: Enables 5% deeper well design for larger tires
 Cost Efficiency: Saves $4.80/vehicle vs. aluminum solutions
 Process Stability: BH effect compensates springback variation
 Environmental Compliance: Meets EU ELV 2000/53/EC directives

 

Technical Support Services

• CAE Simulation: LS-DYNA crash modeling for rear impact scenarios

• Tooling Design: Progressive die optimization for BH steels

• Prototyping: Short-run sample coils for tryout

 

Contact our Automotive Team for:
1 Free samples 2 Stamping guidelines 3 Project-specific material data sets

JSC440W: Where intelligent strength transforms hidden spaces into safety assets.

 

Extended Applications:

• EV battery tray impact shields

• Pickup truck bed reinforcements

• Rear subframe mounting brackets

 Note: Ask for our NVH damping performance data (SAE J1637 tested)

 

Product Parameters

 

COLD ROLLED STEEL	420L/510L/610L/700L
	SPHC/SPHD/SPHE
	SAPH310/SAPH370/SAPH400/SAPH440
	JSH540/JSH590
	QSTE380TM/QSTE420TM/QSTE460TM/QSTE500TM
	QSTE550TM/QSTE700TM
	HR580DP/HR570DP
	GR36/GR50

 

 

1.High Strength-to-Weight Ratio - Reduces vehicle weight while maintaining structural integrity, improving fuel efficiency.
2.Crash Resistance - Absorbs impact energy effectively, enhancing passenger safety.
3.Formability & Weldability - Easily shaped into complex parts (e.g., body panels, chassis).
4.Corrosion Resistance - Often coated (e.g., galvanized) to prevent rust and extend lifespan.
5.Cost-Effectiveness - More affordable than alternatives like aluminum or carbon fiber.
6.Recyclability - Sustainable and widely recycled in the automotive industry.

 

Application

1.Body Structure: Doors, roof panels, trunk lids, and side frames.
2.Safety Components: Bumpers, crash beams, and reinforced pillars.
3.Chassis & Suspension: Axles, wheel rims, and subframes.
4.Engine & Transmission: Brackets, exhaust systems, and gear components.
5.Electric Vehicles (EVs): Battery enclosures and structural reinforcements.

 

After Sales Service

First, inspection by fitters and stamping engineers;
Second, routine inspection by the dedicated workshop foreman;
Third, quality inspection by dedicated engineers.
Strictly implement the requirements of IATF 16949.

 

Company Profile