Stainless 321 / AISI 321

Stainless 321 is a chromium-nickel steel which was developed with improved intergranular-corrosion resistance. Stainless 321 is resistant to atmospheric corrosion, sterilizing solutions, many organic chemicals, and a wide variety of inorganic chemicals. Type 321 should be used for applications requiring heating between 800 °F and 1650 °F such as aircraft collector rings, and exhaust manifolds, expansion joints, and high temperature chemical process equipment.

Available forms are seamless pipe, welded pipe, seamless tube, welded tube, bar, wire, sheet, plate, forgings, pipe fittings and flanges.

Specifications	AMS 5510, AMS 5557, AMS 5559, AMS 5576, AMS 5645, AMS 5689 ASTM A167, ASTM A182 ASTM A193 B8T & 8TA, ASTM A194 8T & 8TA ASTM A213, ASTM A240, ASTM A249, ASTM A276, ASTM A312, ASTM A336, ASTM A403, ASTM A479

C (Carbon content)	.03
MN	2.00
P	.045
S	.03
Si	1.00
Cr	17.0 - 19.0
Ni	9.0 -12.0
Mo	.50
Cu	.50
Co
V (Vanadium content)
Ti (Titanium contenet)	5 x C min
Al (Aluminum content)
Fe (Iron content)
cb+Ta
Zr (Zirconium content)