Corrosion Resistance of 2205 Stainless Steel

Excellent corrosion resistance, better than 316 stainless steel, particularly in chloride environments.

Heat Resistance of 2205 Stainless Steel

 Good resistance to oxidation up to 980°C.

Machinability of 2205 Stainless Steel

2205 has good machinability, better than some austenitic grades. Carbide tooling is recommended.

Welding of 2205 Stainless Steel

Can be welded using standard methods. Preheating is not required but post-weld heat treatment may be necessary for some applications.

Hot Working of 2205 Stainless Steel

Hot working should be done at 1875 – 2150°F (1024 – 1177°C). Followed by rapid cooling.

Annealing of 2205 Stainless Steel

Annealing should be performed at 1900 – 2100°F (1038 – 1149°C) followed by rapid cooling.

Cold Working of 2205 Stainless Steel

Can be cold worked but requires more force than austenitic grades due to its higher strength.

Hardening of 2205 Stainless Steel

2205 cannot be hardened by heat treatment. Hardening is achieved only through cold working.

304 Stainless Steel: Primary Consideration - Cost

304 is the most common and least expensive stainless steel, suitable for general applications in non-demanding environments. It is a cost-effective choice when high corrosion resistance is not required.

316 Stainless Steel: Primary Consideration - Corrosion Resistance

316 stainless steel contains higher levels of chromium, nickel, and molybdenum, providing superior performance in corrosive environments such as those containing chlorides, acids, and alkalis. It is ideal for marine environments, chemical processing, high-temperature conditions, and applications requiring higher sanitary standards.

2205 Duplex Stainless Steel: Primary Consideration - Comprehensive Performance

2205 offers excellent comprehensive performance, including high strength, good corrosion resistance, and resistance to stress corrosion cracking. It is suitable for applications that require both strength and corrosion resistance, such as marine, chemical, and industrial environments. While 2205 is more expensive than 304 and 316, its superior performance justifies the cost.

Summary of Primary Considerations:

304: Cost

316: Corrosion Resistance

2205: Comprehensive Performance

*Other factors such as strength, high-temperature resistance, and specific environmental conditions should also be considered based on the actual usage requirements

2205V is an enhanced version of 2205. In addition to the characteristics of 2205, it has additional nitrogen (N) added to improve its strength, though this may slightly compromise its corrosion resistance.

2205V has higher yield strength and tensile strength than 2205, making it suitable for applications that require higher strength, such as high-pressure vessels.

However, the corrosion resistance of 2205V is slightly lower than 2205, so the choice should be based on the specific application environment.

In summary, 2205 is the standard low-carbon austenitic stainless steel, with excellent corrosion resistance and weldability. 2205V is a variant with higher strength, suitable for applications that require greater strength, but it has slightly lower corrosion resistance.