Casting Alloys | 8xx.x Al-Sn Alloys
- Heat treatable/sand and permanent mould castings (harder to cast)
- Excellent machinability
- Bearings and bushings of all types
- Representative alloys:850.0,851.0
- Approximate ultimate tensile strength range:15-30 ksi
In concluding this section on casting, it is worth noting that conventional die casting tends to yield parts with relatively low elongation values, which are therefore unsuitable for safety-critical components. In recent years, higher pressure types of casting (e.g., squeeze casting and thixocasting) have been developed to a commercial level.
As a result, elongation values of well over 10% are now attainable, together with higher strengths. This considerably widens the range of application of aluminium alloy castings.