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High-Quality 436L Stainless Steel Sheet Excellent Corrosion Resistance for Automotive Exhaust Systems
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x商品の詳細
| 製品 | ステンレス鋼板 | 学年 | 409L |
|---|---|---|---|
| 厚さ | 0.5～50.0mm | 技術 | 冷間圧延、熱間圧延、鍛造 |
| 幅 | 要求として1000mm 1219mm 1500mmまたは習慣 | 表面 | 2D NO.1 |
| 標準 | ASTM GB JIS EN DIN | MOQ | 1トン |
製品の説明
Industrial-Grade 409L Stainless Steel Sheet – Durable and Heat-Resistant for Exhaust Components
Stainless Steel Plate Specifications
| Name | 409L stainless steel Plate |
| Our Grade |
200 Series: 201 202 300 Series: 301 304,304L,304H,309S,310S,314,316L,316Ti,316H,316LN,317L,321,329,347 400 Series: 409L,410,410S,415,416,420,430,431,436L.439,441,443,444,445,446 Super Stainless Steel: 904L,926,254SMO,654SMO,15-5PH,17-4PH,17-7PH.etc Nickel Alloy: C276, C22,G35,Alloy X,Monel 400,K500,Inconel 600,601,617,625,718,Incoloy 800,800H,800HT,825.etc |
| Technique | Hot Rolled, Cold Rolled,Forged |
| Standard | JIS, AISI, ASTM, DIN, TUV, BV, SUS, etc |
| Thickness | 0.1 – 80.0mm |
| Width range | 10mm – 2000mm |
| Length | Customized |
| Finish | 2B, BA, No.4, 8k, Brushed,Hairline,PVD Coating,Sandblasted |
| Service | Laser Cutting, Bending |
| Sample | Available |
Industrial-Grade 409L Stainless Steel Sheet – Durable and Heat-Resistant for Exhaust Components
Product Overview
Engineered for demanding thermal and mechanical environments, Industrial-Grade 409L Stainless Steel Sheet delivers exceptional heat resistance, structural durability, and long-term corrosion performance—making it the preferred material for automotive, commercial vehicle, and industrial exhaust systems. As a low-carbon, titanium-stabilized ferritic stainless steel, 409L (UNS S40903) offers an optimal balance of performance and cost-efficiency, outperforming mild steel and aluminized alternatives while avoiding the premium price of higher-alloyed grades like 304 or 439.
Backed by global standards including ASTM A240, JIS G 4304/4305, and EN 10088-2, this industrial-grade sheet is manufactured for consistent quality, reliable fabrication, and compliance with stringent emission regulations—from Euro 5 to China 6 and EPA Tier 3.
Why 409L Is Ideal for Exhaust Components
Exhaust systems operate under extreme conditions: cyclic heating from –30°C to 650°C (–22°F to 1202°F), exposure to acidic condensates, road salts, vibration, and thermal fatigue. 409L is specifically engineered to thrive in this environment:
- Titanium stabilization prevents chromium carbide formation during welding or high-temp exposure
- Low carbon content (≤0.03%) eliminates sensitization and intergranular corrosion
- Ferritic microstructure provides low thermal expansion and excellent thermal cycling resistance
- Protective chromium oxide layer resists scaling and oxidation up to 650°C
These properties ensure longer service life, reduced maintenance, and compliance with modern durability requirements—all at a fraction of the cost of austenitic stainless steels.
Key Benefits of Industrial-Grade 409L Sheet
| Feature | Advantage |
|---|---|
| High-Temperature Stability | Maintains strength and resists scaling up to 650°C continuous use |
| Excellent Weldability | No preheating or post-weld annealing required; compatible with robotic welding |
| Good Formability | Suitable for deep drawing, bending, and stamping of complex exhaust geometries |
| Cost Efficiency | 30–50% lower material cost than 304 stainless due to zero nickel content |
| Durability | 2–3× longer lifespan than aluminized steel in real-world exhaust applications |
| Magnetic Properties | Enables automated handling in high-volume production lines |
| Eco-Friendly | >95% recyclable; supports OEM sustainability and circular economy goals |
Technical Specifications
Chemical Composition (Typical – Compliant with ASTM A240 & JIS G 4304)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 10.5 – 11.7 |
| Titanium (Ti) | ≥ 6×C, max 0.75 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Nickel (Ni) | ≤ 0.50 |
| Iron (Fe) | Balance |
Mechanical & Physical Properties (Annealed Condition)
| Property | Value |
|---|---|
| Tensile Strength | 415 – 520 MPa |
| Yield Strength (Rp0.2) | 275 – 380 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 85 HRB |
| Density | 7.75 g/cm³ |
| Max Continuous Service Temperature | 650°C (1202°F) |
| Thermal Conductivity (100°C) | ～25.8 W/m·K |
| Coefficient of Thermal Expansion (20–100°C) | 10.6 × 10⁻⁶ /K |
Note: Cold-rolled variants offer higher strength; hot-rolled versions provide superior high-temperature ductility.
Available Forms & Surface Finishes
| Product Form | Thickness Range | Standard Finish | Typical Use |
|---|---|---|---|
| Hot-Rolled Sheet/Plate | 2.0 – 12.0 mm | NO.1 (matte, descaled) | Manifolds, muffler shells, heavy-duty exhaust pipes |
| Cold-Rolled Sheet | 0.3 – 4.0 mm | 2B (smooth, semi-bright) | Catalytic converter housings, tailpipes, brackets |
| Coil Stock | 0.4 – 6.0 mm | 2D or 2B | High-speed stamping and roll-forming operations |
All products meet ASTM, JIS, ISO, and EN specifications. Custom surface treatments (e.g., anti-fingerprint coating, oil-free finish) available on request.
Common Industrial Applications
- Automotive Exhaust Systems:
- Exhaust manifolds
- Flex joints and intermediate pipes
- Mufflers, resonators, and tailpipes
- Catalytic converter outer shells
- Commercial & Heavy-Duty Vehicles:
- Diesel particulate filter (DPF) housings
- Selective catalytic reduction (SCR) system components
- Bus and truck exhaust tubing
- Industrial Equipment:
- Agricultural machinery exhausts
- Generator exhaust manifolds
- Low-pressure heat exchangers (non-marine)
Each passenger vehicle typically uses 40–65 kg of 409L stainless steel—proof of its dominance in emission-critical design.
Fabrication Guidelines
Welding
- Fully compatible with TIG (GTAW), MIG (GMAW), laser, and resistance spot welding
- No risk of weld decay due to Ti stabilization
- Recommended filler: ER409L or ER430
Forming
- Excellent cold formability for bend radii ≥ 2× material thickness
- Avoid sharp notches or excessive edge strain during stamping
Machining
- Moderate machinability; use sharp carbide tools, low speeds, and ample coolant
- Not recommended for fine threading or high-tolerance bores
Heat Exposure
- Stable under continuous operation at 650°C
- Short-term excursions to 750°C acceptable but may cause light scaling
Quality Assurance & Certification
Every production batch undergoes rigorous quality control:
- Spectrometric chemical analysis
- Tensile, hardness, and bend testing
- Ultrasonic or eddy current inspection (for critical applications)
- Surface defect scanning under standardized lighting
Mill Test Certificates (MTCs) per EN 10204 3.1 are provided with full traceability.
Packaging & Delivery
To ensure product integrity during global shipping:
- Sheets/coils wrapped in VCI anti-corrosion paper
- Edges protected with plastic corner guards
- Palletized and secured with steel strapping
- Optional: Wooden crates for export or long-term storage
Standard Dimensions:
- Width: 1000–2000 mm
- Length: 2000–6000 mm (cut-to-length) or in coil
- Thickness: 0.3–12.0 mm (process-dependent)
Custom cutting (slitting, blanking, leveling) available upon request.
Environmental & Economic Impact
- Reduces vehicle weight vs. traditional materials → improves fuel efficiency
- Extends component life → lowers total cost of ownership
- Fully recyclable at end-of-life (up to 98% recovery rate)
- Supports global decarbonization goals through durable, low-maintenance design
Frequently Asked Questions (FAQ)
Q: Can 409L be used in marine environments?
A: Not recommended for prolonged saltwater exposure. For coastal or marine applications, consider 316L or 444 stainless steel.
A: Not recommended for prolonged saltwater exposure. For coastal or marine applications, consider 316L or 444 stainless steel.
Q: Is 409L magnetic?
A: Yes—its ferritic structure makes it strongly magnetic, which is advantageous for automated assembly.
A: Yes—its ferritic structure makes it strongly magnetic, which is advantageous for automated assembly.
Q: How does 409L compare to aluminized steel?
A: 409L lasts 2–3× longer, handles higher temperatures, and doesn’t degrade when scratched—unlike aluminized coatings.
A: 409L lasts 2–3× longer, handles higher temperatures, and doesn’t degrade when scratched—unlike aluminized coatings.
Q: What’s the difference between 409 and 409L?
A: 409L has lower carbon (<0.03%), significantly improving weldability and resistance to intergranular corrosion.
A: 409L has lower carbon (<0.03%), significantly improving weldability and resistance to intergranular corrosion.
Conclusion
Industrial-Grade 409L Stainless Steel Sheet is more than just a material—it’s a proven engineering solution for the toughest thermal challenges in exhaust and emission control systems. With its robust heat resistance, ease of fabrication, and unmatched cost-performance ratio, it remains the industry standard for OEMs and Tier 1 suppliers worldwide.
Whether you’re designing for durability, regulatory compliance, or lifecycle cost savings, 409L delivers consistent, reliable performance—batch after batch.
Contact us today for technical data sheets, samples, or volume quotations—and build exhaust systems that perform, endure, and exceed expectations.
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