321 Stainless Steel Plate Manufacturer & Supplier
321 is titanium-stabilised 304. The titanium preferentially forms carbides so chromium stays in solution, making the grade the classic choice for welded equipment that runs hot and cannot be solution annealed afterwards.
UNS: S32100 | Category: Austenitic Stainless Steel
Size Range
Outer Diameter: Thickness 3 - 80 mm · Width 1000-3000 mm · Length 2000-12000 mm
Wall Thickness: 3 - 80 mm
Chemical Composition (%)
| C | Si | Mn | P | S | Cr | Ni | Ti |
|---|---|---|---|---|---|---|---|
| 0.08 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 17.00-19.00 | 9.00-12.00 | 5 x C min, 0.70 max |
Mechanical Properties
- Yield Strength Rp0.2
- 205 MPa min
- Tensile Strength Rm
- 515 MPa min
- Elongation A5
- 40% min
- Hardness
- 217 HB max
- Max Service Temperature
- 900 °C intermittent / 925 °C continuous
Applicable Standards
- ASTM A240 / ASME SA240 (plate, sheet, strip)
- ASTM A480 (general requirements)
- EN 10088-2 (corrosion resisting sheet & plate)
- EN 10028-7 (pressure purposes)
- JIS G4304 / G4305
- EN 10204 3.1 certification
Applications
- Expansion joints & bellows
- Furnace & boiler parts
- Exhaust manifolds & stacks
- Aircraft and aerospace fabrication
- High temperature process piping spools
Industries Served
- Power & Energy
- Oil & Gas
- Chemical & Petrochemical
- Aerospace
Equivalent Grades
- EN
- 1.4541 / X6CrNiTi18-10
- JIS
- SUS 321
- DIN
- X6CrNiTi18-10