321

321 is commonly used for service in the 1000-1600⁰ F temperature range, as it is stabilized with titanium. Products are supplied to meet ASTM, ASME, NACE, UNS and EN standards where appropriate. UNS S32100.

Mechanical Properties* (In Annealed Condition)

Properties	Unit of Measure	321
Tensile Strength	ksi	75 min
0.2% Yield Strength	ksi	30 min
Elongation	%	40 min
Hardness	HV	95 max

*Nominal room temperature mechanical properties. Typical data. Not suitable for design or specifications

Composition

Element		321
Cr	Chromium	17.0-19.0
Ni	Nickel	9.0-12.0
Mo	Molybdenum	0.750 max
Mn	Manganese	2.000 max
Si	Silicon	0.25-1.00
P	Phosphorus	0.040 max
C	Carbon	0.080 max
S	Sulfur	0.030 max
N	Nitrogen	0.100 max
Cu	Copper	0.750 max
Ti	Titanium	min 5x(C+N), max 0.700
Fe	Iron	Balance