Grade 321

Grade 321 / 1.4541 is a heat resisting austenitic grade of stainless steel. A titanium content at least 5 times the carbon content gives the alloy a good retention of mechanical properties and corrosion resistance at elevated temperatures. The titanium addition also gives the Grade 321 a good creep strength, good resistance to carbide precipitation and is very resistant to oxidation and intergranular corrosion up to 850?C in a dry atmosphere.

Hot atmospheres where other compounds are present e.g. water or sulphur significantly reduce the maximum service temperature. The corrosion resistance and strength is also very good at sub-zero temperatures but the material was developed primarily as a low cost choice for use at temperatures up to 850C.

Nominal Composition

Related Specifications

Typical Applications

321 Stainless is typically used in areas where heat and corrosion resistance is required including Manifolds, Chemical Plant, Heat Exchangers, Piping, Furnace Parts, Chimney and Stack Liners, Storage Tanks and Bellows.