304 coil

• 304 stainless steel is the most versatile and widely used of all stainless steels. Its chemical composition, mechanical properties, weldability and corrosion/oxidation resistance provide the best all-round performance stainless steel at relatively low cost. It also has excellent low-temperature properties and responds well to hardening by cold working. If the potential for intergranular corrosion in the heat-affected zone exists, 304L is recommended.

• Inox 409 contains 11% chromium which is the minimum amount for the formation of the passive surface film which gives stainless steels their corrosion resistance. 409 Coil combines a good elevated temperature corrosion resistance with medium strength, good formability, and overall cost. • Grade 409 steels are also available in highly stabilized forms, such as grades S40930, S40920 and S40910. The stability of these grades is provided by the presence of niobium, titanium, or both, in the composition of steels.

• Type 410 is a hardenable, straight chromium stainless steel which combines superior wear resistance of high carbon alloys with the excellent corrosion resistance of chromium stainless steels. Oil quenching these alloys from temperatures between 1800°F to 1950°F (982 to 1066° C) produces the highest strength and/or wear resistance as well as corrosion resistance. • This alloy is used when strength, hardness, and/or wear resistance must be combined with corrosion resistance.

• 430 is a low-carbon chromium ferritic stainless steel. This 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. • 430 has limited weldability and should not be used in the as-welded condition for dynamic or impact loaded structures. Being a ferritic material, 430 has the potential to suffer brittle fracture at sub-zero temperatures. It should not be used in cryogenic applications.