321 Stainless Steel Plate & Sheet

Key Features of 321 Stainless Steel Plate & Sheet

1. Titanium Stabilization

The addition of titanium binds with carbon to prevent chromium carbide formation, significantly improving resistance to intergranular corrosion.

2. Excellent High-Temperature Performance

Maintains strength and oxidation resistance at elevated temperatures, making it suitable for continuous and cyclic heating environments.

3. Superior Intergranular Corrosion Resistance

Performs exceptionally well after welding or long-term exposure to high temperatures, reducing the risk of grain boundary corrosion.

4. Good Oxidation Resistance

Resists scaling and oxidation in high-temperature environments, ensuring long service life.

5. Reliable Weldability

Does not require post-weld annealing in most cases, improving fabrication efficiency and reducing production costs.

Technical Advantages

• Prevents sensitization during welding
• Stable mechanical properties under thermal stress
• Reduced maintenance in high-temperature environments
• Suitable for complex fabrication and forming
• Long service life in heat-intensive applications

Typical Applications

1. Exhaust Systems

Widely used in automotive and industrial exhaust systems exposed to high temperatures and thermal cycling.

2. Boiler Tubes & Heat Equipment

Ideal for boiler plates, tubes, and heat exchangers requiring durability under high heat and pressure.

3. High-Temperature Pipelines

Suitable for transporting hot gases and fluids in industrial processing systems.

4. Aerospace Components

Applied in aircraft and aerospace structures where heat resistance and material stability are critical.

5. Furnace & Thermal Equipment

Used in furnaces, kilns, and heat treatment equipment requiring oxidation resistance.

Processing & Fabrication

• Excellent weldability without post-weld heat treatment
• Suitable for cutting, bending, and forming
• Good performance in hot and cold working
• Maintains corrosion resistance after fabrication

Surface Finish Options

• No.1 (Hot Rolled Finish)
• 2B Finish
• BA (Bright Annealed)
• No.4 (Brushed Finish)
• Polished / Mirror Finish