321 Stainless Steel

321 Stainless Steel – Titanium-Stabilized Austenitic Alloy

Introducing 321 Stainless Steel, a high-performance austenitic alloy that combines the corrosion resistance of 304 Stainless Steel with enhanced stability at elevated temperatures. The addition of titanium stabilizes the material, making it ideal for applications involving welding and exposure to temperatures ranging from 800°F to 1500°F (427°C to 816°C).

Key Features:

Titanium Stabilization: The inclusion of titanium in 321 Stainless Steel prevents the formation of chromium carbides during welding, thereby mitigating the risk of intergranular corrosion in the heat-affected zones.

Enhanced High-Temperature Resistance: This alloy exhibits excellent oxidation resistance up to 1500°F (816°C) and maintains its strength and toughness at elevated temperatures, making it suitable for high-temperature applications.

Corrosion Resistance: 321 Stainless Steel offers good general corrosion resistance and is particularly effective in environments where 304 Stainless Steel may suffer from intergranular corrosion.

Weldability: The titanium stabilization enhances the weldability of 321 Stainless Steel, allowing for the formation of strong and durable welds without the need for post-weld annealing.

Applications:

321 Stainless Steel is widely used in industries where materials are subjected to high temperatures and corrosive environments. Key applications include:
Aerospace: Components like aircraft collector rings and exhaust manifolds benefit from the alloy’s high-temperature strength and corrosion resistance.

Chemical Processing: Equipment such as heat exchangers and reactors that operate at elevated temperatures and are exposed to corrosive substances.

Petroleum Refining: Systems handling polythionic acid service and other high-temperature processes.

Food Processing: Equipment and storage containers that require resistance to sterilizing solutions and organic chemicals.

Mechanical Properties:

Tensile Strength: 515 MPa

Yield Strength (0.2%): 205 MPa

Elongation: 40%

Hardness: HB 217 / HRB 95
These properties ensure that 321 Stainless Steel maintains its structural integrity under mechanical stress and at elevated temperatures.

Why Choose 321 Stainless Steel?

Superior High-Temperature Performance: With its enhanced resistance to oxidation and strength retention at elevated temperatures, 321 Stainless Steel outperforms many other alloys in high-temperature applications.

Enhanced Corrosion Resistance: The titanium addition provides excellent resistance to intergranular corrosion, particularly in welded structures.

Versatility: Suitable for a wide range of applications across various industries, offering reliable performance in challenging environments.

Choose 321 Stainless Steel for your next project to ensure durability, reliability, and long-term performance in high-temperature and corrosive environments.