347 Stainless Steel for high-temperature applications is a stabilized austenitic stainless steel, enriched with niobium (Nb) to prevent chromium carbide precipitation. This gives it excellent resistance to intergranular corrosion, even after long-term exposure to high heat.
If your industrial process is constantly exposed to temperatures above 800°C, then 347 stainless steel is the recommended choice.
Why Choose 347 Stainless Steel for High-Temperature Environments?
High-Temperature Resistance: 347 Stainless Steel maintains strength and toughness at temperatures up to 870°C (1600°F) continuously and can withstand short-term exposure up to 925°C (1700°F).
Excellent Corrosion Resistance: Thanks to the addition of niobium, 347 stainless steel resists intergranular corrosion that often affects other stainless steels after welding or exposure to elevated temperatures.
Good Mechanical Properties: This grade offers superior tensile strength and durability, making it suitable for demanding industrial applications.
Weldability: 347 Stainless Steel is easy to weld without the risk of sensitization, ensuring long-lasting performance in fabricated components.
Long-Term Cost Efficiency: With high durability and reduced maintenance under thermal stress, 347 stainless steel offers lower lifecycle costs.
Need a reliable stainless steel material for high-temperature processing? Choose 347 Stainless Steel for maximum performance and longevity.
Applications of 347 Stainless Steel for High-Temperature Operations
Aerospace Industry: Components exposed to extreme heat such as exhaust ducts and engine parts.
Chemical Processing: Equipment that handles high-temperature corrosive media.
Power Generation: Boiler parts, heat exchangers, and superheater tubes.
Automotive: Turbocharger components and exhaust systems.
Food Processing: Ovens and equipment requiring thermal stability.
Why 347 Stainless Steel Outperforms Other Grades in High-Temperature Use
Compared to standard 304 or 316 stainless steel, 347 stainless steel’s niobium stabilization prevents carbide precipitation during welding or prolonged heat exposure. This enhances its resistance to intergranular corrosion and increases durability. 347 stainless steel is often the material of choice for projects that require high heat and corrosion resistance.
Comparison: 347 Stainless Steel vs. 304 and 321 at High Temperature
| Property | 304 SS | 321 SS | 347 SS (Best for High Temp) |
|---|---|---|---|
| Max Temperature (°C) | ~870 | ~870 | ~925 |
| Stabilizing Element | None | Titanium (Ti) | Niobium (Nb) |
| Weldability | Moderate | Good | Excellent |
| Sensitization Risk | High | Low | Very Low |
Technical Specifications of 347 Stainless Steel
| Property | Typical Value |
|---|---|
| Chemical Composition | Fe, 17-19% Cr, 9-13% Ni, Nb stabilized |
| Tensile Strength | ~515 MPa |
| Yield Strength | ~205 MPa |
| Elongation | 40% |
| Maximum Service Temperature | 870°C (continuous) |
| Density | 8.0 g/cm³ |
Huaxiao Metal is a globally trusted supplier and manufacturer of stainless steel products, including 347 stainless steel plates, sheets, bars, and coils, etc. We help customers in power plants, refineries, and manufacturing industries to provide better quality and more cost-effective 347 stainless steel products.
Huaxiao Metal – Your Trusted 347 Stainless Steel Supplier
Huaxiao Metal specializes in providing high-quality 347 stainless steel products based on your specific needs. Whether you need plates, coils, bars, or custom shapes, we guarantee high-quality 347 stainless steel products and on-time delivery.
Global delivery: Our professional export department ensures timely global delivery.
Price concessions: Purchase 347 stainless steel at the best price without compromising quality.
Quality certification: All products comply with international standards including ASTM A240.
Technical support: Our professional team will assist you in selecting the right stainless steel grade for your application.
Looking for high-quality 347 stainless steel for your high-temperature project? Contact Huaxiao Metal today for a competitive quote and detailed product inventory information. Our professional sales team will provide you with a quote and answer any questions within 24 hours.