Description

Bolton 281 is a low melting temperature alloy of bismuth and tin. It was formerly sold as Cerrotru. It has the following properties: *Melting temperature of 281° F or 138.0° C *Density of .315 lbs./In3 or 8.7 g/cc *Net maximum expansion of .0005" per inch Bolton 281 is used for: *Holding jet turbine engine blades for machining *Anchoring shafts in permanent magnet rotors *Aircraft assembly Bolton Products also sells Cerrocast, which is similar to Bolton 281 but is more ductile and less brittle.