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Help CenterStainless Steel Square Bar SUS 409 for Construction and Fabrication
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Wuxi Yansheng Technology Co., Ltd., a professional manufacturer established in 2017 with a factory spanning 1,000–3,000 square meters and an annual export value of US$50–100 million, proudly presents our Stainless Steel Square Bar SUS 409 — a reliable, cost-effective solution specifically developed for the construction and fabrication industries. With a workforce of over 100 skilled employees and a global export network covering North America, Europe, Asia, Africa, and Oceania, we ensure each bar meets rigorous quality standards. Our SUS 409 square bar combines excellent corrosion resistance, high-temperature stability, and exceptional weldability, making it an ideal choice for structural frameworks, machinery components, and architectural details.
This product is manufactured from SUS 409 stainless steel, a ferritic grade containing approximately 10.5–11.7% chromium, which provides good oxidation resistance up to 815°C (1500°F). Its ferritic microstructure ensures moderate strength and excellent formability, while the square cross-section offers precise dimensional consistency for easy integration into your projects. Whether you need raw bars for further machining, prefabricated parts, or custom lengths, our SUS 409 square bar delivers dependable performance at a competitive price.
Below are the key technical parameters and features of our Stainless Steel Square Bar SUS 409:
| Parameter | Specification |
|---|---|
| Material Grade | SUS 409 (AISI 409, 1.4512 equivalent) |
| Chemical Composition (max %) | C: 0.08, Si: 1.00, Mn: 1.00, P: 0.040, S: 0.030, Cr: 10.5–11.7, Ti: 6×C min |
| Mechanical Properties | Tensile Strength: ≥380 MPa, Yield Strength: ≥170 MPa, Elongation: ≥20% |
| Available Sizes (mm) | 10×10, 12×12, 15×15, 20×20, 25×25, 30×30, 40×40, 50×50, 60×60, 80×80, 100×100 (custom sizes on request) |
| Length | 3m / 6m standard, or cut-to-length up to 12m |
| Surface Condition | Black (hot-rolled), bright (cold-drawn), pickled (available) |
| Corrosion Resistance | Excellent in mild atmospheres; resistant to exhaust gas condensate |
| Certifications Held by Company | ISO9001, ISO14000, OHSAS18001, and others |
Product Advantages & Customer Benefits:
- Cost-Effective Performance: SUS 409 offers a lower cost compared to austenitic grades (like 304) while providing sufficient corrosion resistance for construction environments. This makes it ideal for budget-conscious projects without sacrificing structural integrity.
- Excellent Weldability: The low carbon content and titanium stabilization prevent intergranular corrosion during welding, enabling strong, durable joints in fabricated assemblies.
- High-Temperature Stability: With oxidation resistance up to 815°C, our square bar is suitable for exhaust systems, heat exchangers, and other high-temperature applications in industrial fabrication.
- Precise Dimensional Tolerances: Every bar is produced under strict quality control (ISO9001 certified) to ensure consistent edge length, squareness, and straightness — reducing waste during machining and fabrication.
- Customizable Options: We offer a wide range of sizes, lengths, surface finishes, and even custom cutting or drilling services to match your specific project requirements.
- Global Logistics Support: Shipped from Tianjin, Shanghai, Qingdao, or Ningbo ports, with reliable freight partners and efficient packing (seaworthy bundles) to ensure damage-free delivery worldwide.
Applications in Construction and Fabrication:
- Structural supports, brackets, and frames in buildings and bridges
- Machinery parts, conveyor components, and industrial equipment
- Automotive exhaust system components (where heat resistance is required)
- Architectural trim, handrails, and decorative elements (with proper surface finish)
- Agricultural and mining equipment parts needing moderate corrosion resistance
Trust & Reliability: Wuxi Yansheng Technology Co., Ltd. has been a trusted supplier since 2017, with an annual export value exceeding US$50 million. Our factory operates under multiple management system certifications, including ISO9001, ISO14000, and OHSAS18001, ensuring consistent product quality and environmental responsibility. With a dedicated team of 101–200 employees and a strong presence in over 30 countries across North America, Europe, Asia, Africa, and Oceania, we have the capacity and experience to fulfill large-volume orders with short lead times. Choose our SUS 409 square bar for a dependable, long-lasting material that brings value to your construction and fabrication projects. Contact us today for a quote or to discuss your custom requirements!
Frequently Asked Questions (FAQ)
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Q: What is the difference between SUS 409 and SUS 430 square bar?
A: SUS 409 has lower chromium (10.5–11.7%) compared to SUS 430 (16–18%), but it contains titanium for stabilization, offering better weldability and higher temperature resistance. SUS 409 is more cost-effective for applications where maximum corrosion resistance is not required. -
Q: Can you supply SUS 409 square bars with a polished/mirror finish?
A: Yes, we can provide bright (cold-drawn) or polished finishes upon request. Please specify your surface requirement when placing an order. -
Q: What is the minimum order quantity (MOQ)?
A: Our standard MOQ is 1 ton per size. For smaller quantities or sample orders, please contact our sales team to discuss availability. -
Q: How long does delivery usually take?
A: Typical lead time is 15–30 days after order confirmation, depending on the quantity and customization level. Urgent orders can be expedited with prior arrangement. -
Q: Do you provide third-party inspection or material test certificates?
A: Absolutely. We can arrange inspection by SGS, BV, or other independent agencies. Mill test certificates (MTC) are included with every shipment. -
Q: Is this material suitable for outdoor structures exposed to rain?
A: SUS 409 offers moderate corrosion resistance. For outdoor use in mild environments, it performs well. In coastal or highly corrosive areas, we recommend applying a protective coating or choosing a higher grade (e.g., SUS 304). -
Q: Can you cut the bars to custom lengths or drill holes?
A: Yes, we offer value-added processing services including cutting, drilling, bending, and surface grinding. Please provide a drawing for a custom quote. -
Q: What packaging do you use for export?
A: Bars are packed in steel strapped bundles covered with waterproof material, suitable for sea freight. We can also use wooden crates or pallets upon request.
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