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 |