Baimaoxing
As a leading OEM 409 Stainless Steel Sheet Factory, we provide more than just raw materials; we deliver engineered solutions. Grade 409 is a titanium-stabilized ferritic stainless steel, primarily recognized for its exceptional performance in automotive exhaust systems and applications where atmospheric corrosion and high temperatures are constant challenges. By leveraging Information Gain, our clients understand that the true value of 409 lies in its lifecycle cost-effectiveness compared to carbon steel and aluminized materials.
Optimized for continuous operation at temperatures up to 675°C (1247°F) and intermittent peaks of 815°C (1499°F), making it the gold standard for heat exchange modules.
Titanium stabilization prevents hardening during welding and improves ductility, allowing for complex geometries in automotive muffler designs.
Provides a significant upgrade over coated carbon steels with lower nickel content than 300-series, offering a balanced price-to-performance ratio.
Located in Liaocheng City, we are a large-scale steel supplier specializing in R&D, high-precision processing, and global technical services. Our expertise encompasses a vast array of materials including stainless steel sheets, coils, and pipes, as well as copper, aluminum, and titanium products. By adopting a scientific management model, our OEM 409 products are critical to the aerospace, automotive parts, and petrochemical industries.
While traditional exhausts are changing, 409 stainless steel is finding new life in EV battery enclosures and thermal management housing due to its fire resistance and structural integrity.
Global procurement teams are shifting toward 100% recyclable materials. Our 409 sheets offer high scrap value and complete recyclability, meeting ESG (Environmental, Social, and Governance) goals.
With global logistics volatility, our OEM capacity supports "Just-in-Time" delivery for multi-national manufacturers, reducing the carbon footprint of industrial logistics.
| Property Class | Standard Value (409/409L) | Industrial Application Solution |
|---|---|---|
| Chromium Content | 10.5% - 11.75% | Provides essential "Passive Layer" protection against atmospheric oxidation. |
| Stabilization | Titanium (Ti) 6x(C+N) min | Prevents intergranular corrosion after high-heat welding cycles. |
| Yield Strength | ≥ 170 MPa | Excellent structural rigidity for heavy-duty truck exhaust systems. |
| Finish Options | 2B, BA, No.4, HL | Customizable surface aesthetics for architectural or functional use. |



Our factory utilizes automated cold-rolling mills and precision laser cutting to ensure every 409 Stainless Steel Sheet meets the tightest tolerances requested by our OEM partners.
Our production lines strictly follow ASTM A240 and EN 10088-2 standards. Each batch of 409 stainless steel is accompanied by a Mill Test Certificate (MTC) detailing chemical composition and mechanical properties.
We ensure full compliance with EU REACH and RoHS directives, making our products safe for export to any regulated market.
We offer specialized warehousing and distribution support for key markets in North America, Southeast Asia, and Europe. Our technical team provides on-site consultation to help engineers select the correct thickness and finish for localized climate challenges.
The evolution of 409 stainless steel is moving towards ultra-low carbon (ULC) variants and enhanced stabilization techniques. As an industry-leading factory, we are investing in Smart Manufacturing (Industry 4.0) to reduce energy consumption during the annealing process, aligning our OEM services with the global push for Green Steel.
409 is a ferritic steel with lower chromium and almost no nickel, making it magnetic and more cost-effective. While 304 has superior corrosion resistance, 409 is preferred for high-heat applications like exhausts where cost and thermal fatigue are priorities.
Yes. Many OEMs apply heat-resistant coatings to 409 sheets to further extend their life in extreme environments, though its natural oxidation resistance is often sufficient for internal automotive components.
In SEO and procurement, Information Gain refers to providing unique data or insights not found elsewhere—such as specific fatigue test results under cyclic loading or proprietary annealing curves that improve deep-drawing performance.
We use real-time spectral analysis and ultrasonic flaw detection to ensure no surface defects or internal inclusions exist before the sheets are crated for shipment.