Stainless Steel 321 Tee

Stainless Steel 321 Tee is a titanium-stabilised version of SS 304, used in particular applications within the sensitizing temperature range. Its resistance to sensitization, coupled with its higher strength at high temperature makes it suitable in application where SS 304 will become sensitized, or where SS 304L has insufficient hot strength. It is not subject to weld decay (intergranular corrosion) when exposed to mildly corrosive environments. However, welded SS 321 must never be used in highly oxidising environments as it is liable to 'Knife-line' attack. Typical Applications SX 321 is today used almost exclusively for service within the sensitizing temperature range (450-850oC). In welded ambient temperature applications it has been replaced by SX 304L. Some typical areas of application are: Furnace components. Superheater and afterburner parts. Compensators and expansion bellows.