422 stainless steel round bar

Alloy 422 Stainless Steel Round Bar

Alloy 422 stainless steel round bar is a hardenable, martensitic stainless steel designed for service temperatures up to 1200°F. This grade achieves high mechanical properties through heat treatment, providing excellent scaling and oxidation resistance. Typical applications include buckets and blades in steam turbines, high-temperature bolting, and valve trim.

Overview of Stainless Steel Alloy AISI 422

Stainless Steel Alloy AISI 422, also known as Alloy 616, belongs to the martensitic family of stainless steels. It is specifically formulated for use in the aerospace and power industries, which require high strength-to-weight ratios from room temperature to 1200°F. Notably, this material has the highest electrical conductivity among wrought martensitic stainless steels, alongside moderately high embodied energy and base costs.

Characteristics of 422 Martensitic Stainless Steel Round Bar

The 422 martensitic stainless steel round bar is produced through AOD + ESR melting processes and incorporates heavy metal alloying elements that enhance its strength and temper resistance at elevated temperatures. Similar to 410 stainless steel, this grade can be heat treated to achieve multiple strength levels, making it ideal for various high-heat applications in the power generation market, including steam and gas turbine components.

With superior strength at elevated temperatures, Type 422 (S42200) serves as an appealing alternative to Type 403. Its capability to be heat treated to various high-strength levels makes it a preferred choice in industries that demand high strength-to-weight ratios from room temperature to 1200°F.

Applications:

• Aircraft parts
• Steam and gas turbine components
• High-heat components
• Rotors

Standards:

• UNS: ASTM/ASTE 42200
• DIN: 1.4935