Alloys Handbook
Thermodur-73
Al Si11Cu2Ni2Mg2Mn
Complex piston alloy with exceptional stability.
Alloy Group
Rheinfelden
Recyclability
100%
Chemical Composition (%)
| Element | Min | Max |
|---|---|---|
| Si | 10.00 | 11.80 |
| Cu | 1.80 | 2.30 |
| Ni | 1.80 | 2.30 |
| Mg | 1.80 | 2.30 |
| Mn | — | 0.40 |
| Fe | — | 0.15 |
| Zn | — | 0.10 |
| Ti | — | 0.10 |
Mechanical Properties
| Temper | Method | Rm | Rp0.2 | A% | HBW |
|---|---|---|---|---|---|
| T5 | Permanent mold | 250 | 200 | 0.5 | 110 |
Quick Applications
- Highly loaded pistons
Corrosion Resilience
Overall: Fair to Good
freshwater
Excellent
saltwater
Fair
industrial
Good
acidic
Limited