321 Stainless Sheet Metal

They differ in that they are resistant to intergranular corrosion after heating to temperatures in the carbide precipitation range.

321 stainless sheet metal.

321 stainless steel sheet 321 is non heat treatable and non magnetic in the annealed condition. It is used principally for applications involving welding or sustained elevated temperature operations. 321 is similar to 304 but uses titanium as a stabilizer. The titanium content of 321 stainless steel preserves corrosion resistance around weld points.

Foil is often used as a heat treating wrap in temperatures up to 2600 f. This alloy contains chromium nickel and titanium. Type 321 stainless steel is similar to type 304 stainless steel however it contains a titanium addition of at least five times the carbon content. Grades 321 and 347 are the basic austenitic 18 8 steel grade 304 stabilized by titanium 321 or niobium 347 additions.

Type 321 is a good choice for applications where heat is an issue. 321 can be used in applications up to 900 c where 304 is normally used up to 500 c. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425 850 c. Type 321 is stabilized against chromium carbide formation by the addition of titanium.

Ideal uses for 321 stainless steel include expansion joints aircraft parts furnace parts heat exchangers mineral processing screens welding by all standard methods with or without filler metal. This grade is typically used in the 800 1500 f temperature range where it is stabilized against chromium carbide precipitation by the addition of titanium which results in the precipitation of titanium carbides. Type 321 is a stabilized stainless steel which offers as its main advantage an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500 f 427 to 816 c. Type 321 is a titanium stabilized chromium nickel austenitic stainless steel with corrosion resistance similar to 304 304l.

For service temperatures up to about 1600 f a stabilizing treatment at 1550 1650 f air cool may be used to provide optimum resistance to intergranular corrosion and to polythionic acid stress corrosion cracking. It is furnished with a crimping tool. 321 is basically a 304 grade containing a stabilizer of titanium.