Ferrous Alloys

Type 321 Austenitic Stainless Steel

Application & Characteristics 
Stabilized with titanium. Used in weldments for corrosive service in the 800 to 1650F range.
Chemical Composition (%)
Cr 18.0; Ni 10.0; Ti 0.40; Balance Fe. Allowable maximums: C 0.08; Mn 2.0; Si 1.50; P 0.045; S 0.030
Physical Properties
Melting Range (°F)2550 – 2600
Density (lbs/in³) 68F0.286
Thermal Expansion (in/in °Fx10 to the power of -6)9.2 (0 – 600F)
Electrical Resistivity (ohms/cir mil/ft.) 68F433
Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)85
Yield Strength (psi x 10³)40
Elongation ( % )50
Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³)125
Yield Strength (psi x 10³)95
Elongation ( % )25
Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)165
Yield Strength (psi x 10³)135
Elongation ( % )8

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