Steel Sheets

Stainless Steel Square Pipe 309S is a high-temperature, corrosion-resistant alloy primarily used in heat-intensive applications. It belongs to the 309 series of stainless steel, which contains higher chromium and nickel content than 304 and 316 grades, providing excellent oxidation resistance and strength at elevated temperatures.

1. High-Temperature Resistance – Performs well in applications up to 980-1000°C (1800-1832°F).

2. Corrosion Resistance – Superior to 304 and 316 in oxidation and sulfidation resistance.

3. Low Carbon Content (309S) – Helps prevent carbide precipitation during welding and prolongs material lifespan.

4. Good Weldability & Formability – Can be welded and fabricated easily.

5. Applications – Used in furnace components, heat exchangers, chemical processing, and high-temperature industrial environments.

• Thickness: 1mm – 10mm

• Width (Side Length): 10mm – 200mm

• Length: Standard 6m, custom lengths available

Product Details:

Stainless Steel Angle 304H is a high-carbon variant of the standard 304 stainless steel, designed for high-temperature applications. The increased carbon content enhances its strength and creep resistance at elevated temperatures. Here are its key features and specifications:

• Material: Stainless Steel 304H (High Carbon)

• Composition:

  • Carbon (C): 0.04% - 0.10% (higher than 304/304L)

  • Chromium (Cr): 18% - 20%

  • Nickel (Ni): 8% - 10.5%

  • Manganese (Mn): ≤2.0%

  • Silicon (Si): ≤0.75%

  • Phosphorus (P): ≤0.045%

  • Sulfur (S): ≤0.030%

• Corrosion Resistance: Similar to 304 but better suited for high temperatures.

• High-Temperature Strength: Better mechanical properties above 800°F (427°C).

• Weldability: Good, but requires precautions due to higher carbon content.

• Applications:

  • Heat exchangers

  • Boilers

  • Petrochemical & chemical processing

  • Structural supports in high-temperature environments