Stainless steel 430 is a ferritic, straight chromium, non-hardenable grade, combining good corrosion resistance and formability characteristics with useful mechanical properties. Its ability to resist nitric acid attack permits its use in specific chemical applications but automotive trim and appliance components represents its largest fields of application. Alloy 430 has poor weldability compared to most stainless steels due to the higher carbon content and lack of stabilizing elements for this grade.
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.
Stainless Steel 416 is a corrosion resistant chromium steel alloy that is non-seizing, non-galling, free machining metal widely used in automatic screw machines. Its short brittle chips make it ideal for increased machining speeds, larger cuts, and longer tool life.
Stainless 422 is a hardenable, martensitic stainless steel with better strength at higher temperatures as high as 1200 F. It is capable of being heat treated to various high strength levels.
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