Stainless Steel 321 features
Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilized by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850 °C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900 °C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.
SS 321 Chemical Composition
|
Grade |
UNS |
C≤ |
Mn |
P≤ |
S≤ |
Si≤ |
Cr |
Mo |
Ni |
|
321 |
S32100 |
0.08 |
2 |
0.045 |
0.03 |
0.75 |
17.0-19.0 |
- |
9.0-12.0 |
Mechanical Properties of SS 321
|
Grade |
Tensile, min, ksi[MPa] |
Yield, min, ksi[MPa] |
Elongation, %(min) |
Hardness, HB(max) |
|
321H |
75【515】 |
30【205】 |
40 |
217 |
SS 321 Equivalent Grades
|
STANDARD |
WERKSTOFF NR. |
UNS |
JIS |
EN |
|
321 |
1.4541 |
S32100 |
SUS321 |
X6CrNiTi18-10 |
ASTM SPECIFICATION
|
Pipe, |
Tube, |
Tube , |
Sheet/Plate |
Bar /Rod |
Forging /Flange |
BW Fittings |
|
ASTM A312 |
ASTM A269 |
ASTM A213 |
ASTM A240 |
ASTM A276/A479 |
ASTM A182 |
ASTM A403 |
Applications of SS 321
- Annealing covers
- High-temp tempering equipment
- Chemical processing equipment
- Automotive exhaust systems
- Firewalls
- Boiler casings
- Aircraft exhaust stacks and manifolds
- Superheaters
- Gas and oil refinery equipment
Hot Tags: stainless steel 321 / uns s32100 / 1.4541, China stainless steel 321 / uns s32100 / 1.4541 manufacturers, suppliers

