Alloy 321 (UNS S32100) contains increased titanium for improved strength and heat resistance, making it ideal for applications range of 800 – 1500°F (427 – 816°C). It has excellent resistance to intergranular corrosion. A popular aircraft alloy.
Stainless steel 410 is a basic martensitic grade which contains 11.5% chromium, offering both exceptional wear and corrosion resistance. 410 is generally used for applications which involve mild corrosion, high strength, and heat resistance.
Grade 302 is a slightly higher carbon version than 304. 302 stainless steel is an extremely tough, ductile grade that demonstrates superior corrosion resistance. It is a non-magnetic grade that is not hardenable by heat treating. It is generally used in the annealed condition and is noted for its ease of fabrication and formability.
17-4, also known as 630 stainless, can be heat treated to high levels of strength and hardness, and good for machining and is corrosion resistant. Often used in petroleum and chemical industries, as well as in aircraft parts.
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