321 Stainless Steel
1.4541
- EN1.4541
- ENX6CrNiTi18-10
- AISI321
- UNSS32100
Titanium-stabilised austenitic stainless steel. Resistant to intergranular corrosion in the 400–800 °C range; used instead of 304 for welded parts operating at elevated temperature.
01Material Properties
- Ti stabilised; resistance to sensitisation
- Oxidation resistance up to 800 °C
- Corrosion resistance similar to 304
- Good weldability
- Non-magnetic
02Applications
- Exhaust manifolds and systems
- Boiler and pressure vessel parts
- Aircraft and engine components
- Heat exchangers
- Welded high-temperature equipment
03Delivery Condition
- Solution annealed (max. 215 HB); bar, plate, sheet, tube.
04Heat Treatment
Typical values
- Solution annealing
- 1020–1100 °C; water / rapid air cooling
- Stabilising anneal
- Optional 850–950 °C
- Hardening
- Not hardenable by heat treatment
- Post-weld
- No heat treatment required
- Delivery condition
- Solution annealed, max. 215 HB
Heat treatment cycle (schematic)
Values are approximate and for information only; they vary with section size, heat and furnace conditions. Binding values are determined from the manufacturer’s data under laboratory conditions.
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