Inderjit Forgings is a one of the finest manufacturer and distributor of 321 Stainless Steel Threaded Fittings, which should not be subjected to temperatures between 800 Degree F / 1650 Degree F (425 Degree C / 900 Degree C) nor slowly cooled through that temperature range, to prevent intergranular corrosion. Due to the presence of sulfur in the steel composition, Stainless Steel 321 Threaded Elbow Fittings is the most readily machineable austenitic alloy. Stainless Steel 321 Threaded Tee Fittings has a selenium rather than sulphur addition, improving the hot and cold forming characteristics and providing a smoother machined surface finish. This decreases the corrosion resistance of Stainless Steel 321 Threaded Cross Fittings, but corrosion resistance remains good in mild environments.
Like other austenitic grades, Stainless Steel 321 Threaded Cap Fittings shows excellent toughness, the lower sulfur content does reduce this slightly. Stainless Steel 321 Threaded Coupling Fittings has good resistance to oxidation when intermittently exposed to temperature up to 760 Degree C temperatures. High temperature use in Stainless Steel 321 Threaded Union Fittings is therefore not generally recommended. This increase in molybdenum in Stainless Steel 321 Threaded Plug Fittings results in increased corrosion resistance. The corrosion resistance in Stainless Steel 321 Threaded Bushing Fittings works so well that it actually is self-healing. Its corrosion resistance is superior to Stainless Steel 321 Threaded Nipple Fittings, another free-machining grade, but is somewhat inferior to other stainless steels which do not contain higher sulfur levels.
STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
Specification : ASTM A182 / ASME SA182
Dimension Standard : ASME/ANSI B16.11, MSS SP-79, 83, 95, 97, BS 3799
Size : 1/8” NB to 4” NB (Screwed)
Pressure Class : 2000 LBS, 3000 LBS, 6000 LBS
ASTM A182 F321 Stainless Steel Threaded Fittings – Manufacturing Standards | |
---|---|
ASTM A182 - ASME SA182 | Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings |
ASME B16.11 | Forged Fittings, Socket – Welding and Threaded |
MSS SP-95 | Swage(d) Nipples and Bull Plugs |
BS3799 | Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry |
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 - 12.00 | 5(C+N) – 0.70 max |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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