SS 321 / SS 321H Pipe & Tubing

Stainless-steel 321 is a standard kind of austentic steel that could be very much like SS 304, however with improvements of titanium and also five times the carbon content. Because of the content of carbon within this higher steel alloy it decreases the risk of carbide precipitation for the period of welding. This higher metal alloy furnishes outstanding resistance to rust and also metabolism. SS 321 can be utilized for high-temperature service due to its good mechanized components. This also have high-quality creep and also stress rupture properties compared to SS 304. The higher steel alloy provides the same resistance to overall rust because of higher nickel and also chromium content.

Standards

Summary	Standards
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes	ASTM A 213
Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes	ASTM A 249
Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service	ASTM A 269
Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes	ASTM A 312
Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications	ASTM A 358
Standard Specification for Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service	ASTM A 409

Mechanical Properties

Tensile Strength : Unit – ksi (MPa) , Minimum
Yeild Strength : 0.2 % Offset , Unit – ksi (MPa) , Minimum
Elongation : in 2″, Unit : % , MinimumValues as per ASTM A 213

Condition & Grade	Tensile Strength	Yeild Strength	Elognation	Hardness
Annealed SS 321 / 321H	75 (515)	30 (205)	35	90 HRB max

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Automotive Industry

Pipes

Stocking & Supplying Seamless & Welded Pipes as small as 1/4″ NB and 6″ NB. Thickness ranging from Sch 10 to Sch 80.

Tubes / Tubing

Stocking & Supplying Seamless & Welded Tubes / Tubing from 6mm OD to 101.6mm OD. Thickness ranging from 0.8mm to 6mm.

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