Alloys Handbook
Castasil-21
Al Si9Sr
Alloy with high conductivity and ductility.
Alloy Group
Rheinfelden
Recyclability
100%
Chemical Composition (%)
| Element | Min | Max |
|---|---|---|
| Si | 8.00 | 9.00 |
| Fe | 0.50 | 0.70 |
| Cu | — | 0.02 |
| Mn | — | 0.01 |
| Mg | — | 0.03 |
| Zn | — | 0.07 |
| Ti | — | 0.01 |
| Sr | 0.01 | 0.03 |
Mechanical Properties
| Temper | Method | Rm | Rp0.2 | A% | HBW |
|---|---|---|---|---|---|
| O | Die casting | 150 | 80 | 15 | 45 |
Quick Applications
- E-mobility
- Rotors
Corrosion Resilience
Overall: Fair to Good
freshwater
Excellent
saltwater
Fair
industrial
Good
acidic
Limited