Ceramic foundry sand for lost foam 

Size:10mesh-300mesh  AFS25-AFS125

Main Chemical Composition:

Al2O3≥75%

Fe2O3≤5%

TiO2 ≤5%

SiO2:5%-20%

Physical Properties:

Shape:ball, spherical

Angularity: 1.1 max, similar to ball

Bulk Density:1.95-2.05(g/cm3)

Refractoriness: 1790 C min

Thermal expansion: 0.13% (10 min at 1000C )

Application:

Waterglass bonded sand, resin bondedsand, precision casting, Expendable Pattern Casting (EPC), Copper and Aluminiumarticles casting treatment.

Advantages:
1,replacement of Quartz Sands and Silica Sands
2,Low thermal expansion rate
3,high refractoriness