409 Stainless Steel Exhaust Pipe Price Per kg
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If you're looking for a reliable and cost-effective stainless steel exhaust pipe solution, 409 stainless steel exhaust pipes are among the most popular materials for automotive and industrial applications. 409 stainless steel exhaust pipes are components made from ferritic stainless steel alloy, valued for their cost-effectiveness, heat resistance, and weldability, making them ideal for automotive and industrial exhaust systems. They offer better corrosion and oxidation resistance than low-carbon steel, though they are more prone to surface rusting compared to higher-grade stainless steels like 304-making them a perfect fit for automotive exhaust systems, mufflers, and catalytic converter piping.
With over 18 years of stainless steel manufacturing expertise, GNEE supplies high-quality 409 stainless steel exhaust pipes. This material is a ferritic stainless steel containing 10.5–11.7% chromium and a small amount of titanium (for stabilization). It is produced via welding processes, available in various dimensions and lengths. The pipe surface can be treated with rolling, bright annealing, and polishing to achieve a bright appearance and smooth finish. The exhaust pipes are easy to manufacture and can be seamlessly joined using MIG or TIG welding, ensuring secure and durable connections.

409 Stainless Steel Exhaust Pipe Price per kg (Updated 2025)
| Product Type | Outside Diameter (mm) | Wall Thickness (mm) | Finish | Approx. Price (USD/kg) | Standard |
|---|---|---|---|---|---|
| SS 409 Seamless Exhaust Pipe | 12.7 – 168.3 | 0.8 – 4.0 | Pickled / Annealed | $2.90 – $3.40 / kg | ASTM A268 / A312 |
| SS 409 Welded Exhaust Pipe | 25.4 – 203.2 | 1.0 – 3.0 | BA / 2B / Mirror | $2.20 – $2.80 / kg | ASTM A554 / EN 10296 |
| 409 Exhaust Flex Tube | Custom | 0.6 – 1.5 | Polished | $3.50 – $4.10 / kg | ASTM A268 |
| 409 Pipe Fittings & Bends | DN15 – DN100 | - | 2B / Brushed | $3.20 – $3.80 / kg | ASTM A403 |
💡 Prices fluctuate with market nickel and chromium values. Contact Gnee for bulk order discounts or mill-direct quotes.Email: info@gneestainless.com
Chemical Composition & Mechanical Properties
| Element | C (%) | Cr (%) | Ni (%) | Ti (%) | Fe (%) |
|---|---|---|---|---|---|
| 409 | ≤0.08 | 10.5–11.75 | ≤0.50 | 0.17–0.65 | Balance |
| Property | Typical Value |
|---|---|
| Density | 7.75 g/cm³ |
| Tensile Strength | ≥380 MPa |
| Yield Strength | ≥170 MPa |
| Elongation | ≥20% |
| Max Continuous Service Temp | 675°C (1247°F) |
Applications OF 409 Stainless Steel Exhaust Pipe
Automotive exhaust systems
Motorcycle exhaust and mufflers
Generator and industrial exhaust lines
Heat exchanger piping
Fabricated exhaust components and elbows

Our 409 stainless steel exhaust pipes are in stock and available for sale at competitive prices. As trusted stainless steel suppliers and manufacturers, we ensure every product meets the highest quality standards.
Contact us today to request a quote or learn more about our 409 stainless steel exhaust pipes!Email: info@gneestainless.com
Packaging, Delivery & Payment Terms
| Item | Details |
|---|---|
| Packaging | Plastic caps, waterproof wrapping, wooden pallets or boxes |
| Delivery Time | 7–15 working days after deposit |
| Payment Terms | T/T 30% advance, 70% before shipment or L/C at sight |
| Shipping Ports | Tianjin, Shanghai, Qingdao, Ningbo |







