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321

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) 

PropertiesUnit of Measure321
Tensile Strengthksi75 min
0.2% Yield Strengthksi30 min
Elongation%40 min
HardnessHV95 max

*Nominal Room Temperature Mechanical Properties.  Typical Data.  Not suitable for design or specifications.

Composition

Element 321
CrChromium17.0-19.0
NiNickel9.0-12.0
MoMolybdenum0.750 max
MnManganese2.000 max
SiSilicon0.25-1.00
PPhosphorus0.040 max
CCarbon0.080 max
SSulfur0.030 max
NNitrogen0.100 max
CuCopper0.750 max
TiTitaniummin 5x(C+N), max 0.700
FeIronBalance