This is the same as Lens alloy 117, but has a eutectic melting point of 58ºC, and is Cadmium free but has a slightly higher Indium content making it a little more expensive.
Data
Melting Point: Eutectic 58ºC
Weight lb/in3: Approx 0.30
Brinell Hardness: Approx 14.0
Growth After Casting: (Shrinkage) Approx 0.0002" Per inch
Uses
Holding glass lenses during grinding operations.
Proof casting where low temperatures are necessary.