AISI 321 Edelstahl: Titanium-Stabilized for High-Temp Service
ASTM A240/A276 · Published: 2026-05-29 · Updated: July 2026
AISI 321 is an austenitic stainless steel stabilized with titanium (5× carbon content minimum), which preferentially forms titanium carbides instead of chromium carbides during welding or elevated-temperature service. This prevents sensitization...
AISI 321 ist ein austenitic stainless steel stabilized mit titanium (5× carbon content minimum), welche preferentially forms titanium carbides instead von chromium carbides während welding oder elevated-temperature service. Dies prevents sensitization und intergranular corrosion ohne der brauchen für post-weld solution annealing. Used extensively für aircraft abgas systems, furnace components, expansion joints, und hoch-temperature chemical processing ausrüstung. Service temperatures auf zu 815°C (1500°F) in oxidizing atmospheres. Titanium stabilization auch improves creep strength compared zu 304.
Quick Facts
| Kategorie | Edelstahl |
| Norm | ASTM A240/A276 |
| Density | 8.00 g/cm³ |
| Yield Strength | 205 MPa (30 ksi) |
| Tensile Strength | 515 MPa (75 ksi) |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| EN 1.4541 | Compare |
| X6CrNiTi18-10 | Compare |
| SUS321 | Compare |
| 06Cr18Ni11Ti | Compare |
| AISI 321 | Compare |
Verwandt Materials
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Frequently Asked Questions
Wenn sollte 321 sein specified instead von 304L?
Verwenden 321 wenn der komponente operates continuously über 425°C (800°F) wo 304L werden sensitize über time despite niedrig carbon. 321 auch offers better creep widerstand und hoch-temperature strength. Für ambient-temperature welded structures, 304L ist mehr economical und achieves der gleich sensitization widerstand durch niedrig carbon content. 321 ist preferred in aerospace abgas systems und refinery heater tubes.
References & International Standards
- ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
- International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
- American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
- European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu