# 2D - Dull finish produced by cold rolling, annealing and descaling. It is used for applications where a smooth decorative finish is not required. It is available in strip, foil and ribbon. Type 321 has excellent corrosion resistance equivalent to type 302 or 304 in the annealed condition and superior if a weldment in these grades has not been post-weld annealed or if the application involves service in the 800 ☏ - 1600 ☏ range. Contact Ulbrich Technical Services for additional information.Īdditional Properties Corrosion Resistance Type 321 can be cold rolled to various tempers. Yield Strength (0.2% Offset): 30 KSI min (250 MPa min)
Ultimate Tensile Strength: 75 KSI min (515 MPa min) Wire - Profile, Round, Flat, Square Mechanical Properties at Room Temperature Magnetic Permeability: H = 200 Oersteds: Annealed < 1.02 max Mean Coefficient of Thermal Expansion: in/in/☏ (µm/m Thermal Conductivity: BTU/hr/ft2/ft/☏ (W/m Titanium: 5x (Carbon+ Nitrogen) min-0.70 maxĮlectrical Resistivity: microhm-in (microhm-cm): 68 ☏ (20 ☌): 28.4 (72) Type 321 provides excellent resistance to oxidation and corrosion and possesses good creep strength. It also improves the elevated temperature properties of the alloy. This titanium addition reduces or prevents carbide precipitation during welding and in 800 - 1500 ☏ (427 - 816 ☌) service. Type 321 is a stabilized austenitic stainless steel similar to type 304 but with a titanium addition. Type 321 is an austenitic chromium-nickel stainless steel containing Titanium which is recommended for parts fabricated by welding which cannot subsequently be annealed. We also provide a tube cutting service where we supply your tubular products to exact lengths.Strip, Coil, Foil, Wire, UNS S32100, AMS 5510 ApplicationsĪircraft collector rings, exhaust stacks, carburetor air intensifier tubes, exhaust manifolds, flexible couplings, jet engine parts, mufflers, pressure vessels, tubing, fasteners, flexible metal hose and bellows Description
Tubes from grade 321 are available in various sizes. Smiths Advanced Metals stocks 321 stainless steel tubes in seamless or welded form. The alloy finds use in demanding applications where high temperatures are present and include exhaust stacks, expansion joints, engine manifolds and oil refinery equipment. The material also offers good weldability with superior creep and stress rupture capabilities compared to Type 304 and 304L. As 321 is austenitic, toughness and overall strength levels are maintained at cryogenic temperatures. 321 is often referred to as a heat resistant grade because good corrosion resistance and strength characteristics are maintained even at high-temperature levels. The inclusion of titanium makes the alloy more resistant to carbide precipitation at elevated temperatures. Our 321 stainless steel tubes are stabilised with titanium and offer resistance to intergranular corrosion.ģ21 stainless steel is similar to Type 304 but with greater levels of carbon and titanium.
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