430 is a low-carbon plain chromium ferritic stainless steel. The steel has good corrosion resistance in mildly corrosive environments and good resistance to oxidation at elevated temperatures. In the annealed condition the steel is ductile, does not harden excessively during cold work and can be formed using a large variety of roll forming or mild stretch-bending operations, as well as the more common drawing and bending processes. The steel has limited weldability and should not be used in the as welded condition for dynamic or impact loaded structures. Being a ferritic material, 430 is liable to brittle fracture at sub-zero temperatures, and cannot be used in cryogenic applications. As the steel does not contain nickel or molybdenum, it is cheaper than any of the 300 series steels.
Type 430 is ductile, has good forming characteristic and is readily fabricated by such operations as bending, pressing, drawing and heading. Its tendency to work harden is much less than that of the nickel-bearing 300 series stainless steel. Type 430 does not have as good corrosion resisting properties as the chromium nickel steels. However, it is suitable for interior architectural and decorative household appliances trim as well as automotive body molding. Cold rolled Type 430 has an attractive bright finish which can be maintained with reasonable care and periodic cleaning. Type 430 is by far the most popular of all straight chromium stainless steels. It is the general purpose alloy of the ferritic class. This type contains approximately 17 percent chromium and is often referred as 17 chrome stainless. The higher chromium content imparts improved resistance of Type 430 is slightly less than carbon steel, but its thermal conductivity is one half that of carbon steel. Chromium stainless steel is magnetic.
Typical Applications:
Automotive Trim and Molding
Builders Hardware
Fasteners
Furnace Parts
Interior Architectural Trim and Paneling
Kitchen Trim and Equipment
Storage Vessels
Television Cones
Tobacco Machinery
Tubing
Vaults
Zippers
