Cerrocast

• Also known as Bolton 281
• Weight = 1 pound - Dimension: 4½" L x 1½" W x  ½" H (approximate)
• Non-Eutectic Alloy
• Contains the following metals - Bismuth and Tin
• Melting Temperature 281-338º F or 138.0-170.0º C
• Density .296 lbs./In³   
• 8.2 g/cc Maximum shrinkage only -.0001" per inch.

Parallels Cerrotru (Bolton 281) in its end uses and is preferred by some for fusible mandrels for electroforming, lost wax pattern dies and proof casting large dies and molds due to greater dimensional accuracy; holding jet turbine engine blades for machining. More ductile and less brittle than Cerrotru (Bolton 281).