321 Stainless Steel Strip
321 stainless steel icontains a Titanium addition of at least five times the carbon content. This addition is made to reduce or eliminate chromium carbide precipitation - resulting from welding or exposure to high temperatures. Maximum stabilization is accomplished by annealing between 955° and 1010° C. AISI 321 has extensive use in aircraft parts, such as exhaust systems where operating temperatures are higher than 427° C. and where corrosive conditions are not too severe; also because of its resistance to scaling and vibration fatigue.
Chemical Composition
Grade |
C |
Mn |
Si |
P |
S |
Cr |
N |
Ni |
Ti |
SS 321 |
0.08 max |
2.0 max |
1.0 max |
0.045 max |
0.030 max |
17.00 – 19.00 |
0.10 max |
9.00 – 12.00 |
5(C+N) – 0.70 max |
Mechanical Properties
Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation |
8.0 g/cm3 |
1457 °C (2650 °F) |
Psi – 75000 , MPa – 515 |
Psi – 30000 , MPa – 205 |
35 % |
Applications :
- Aircraft exhaust manifolds and flanges.
- Jet engine parts
- Aircraft exhaust manifolds and flanges
- Jet engine parts
- Chemical handling equipment
- Oil refinery equipment
- Firewalls