Special mold aggregates
Here are the properties, application examples, and ingredients of Chinese spherical aluminum casting aggregate and Hisago AC Aluminum Sand.
－Properties－
AC Aluminum Sand is a spherical casting aggregate, composed mainly of aluminum (Al203), offering cooling, low-expansion, and fracture-resistant properties.
－Application examples－
| Casting material | Mold | Efficacy | |
| A | Cast iron | Alkali phenol | Mold wash reduction, waste reduction |
| B | Cast iron | Furan | Good cast surfaces |
| C | Aluminum | Phenol urethane | Cold metal reduction, organization miniaturization |
| D | Cast iron, copper alloys | Shell core | Gas removal, crack reduction |
－granules picutre（100 times）－
－Ingredient list－
| Main mineral and chemical formulas | Chemical ingredients | Bulk specific gravity | Refractoriness | Fracture resistivity (vs. AFS) |
| Corundum, Al2O3 | Al2O3 70～80% | 1.9 | 1850℃ | 1.01 Unusually hard |
| No. mesh | 18 | 26 | 36 | 50 | 70 | 100 | 140 | 200 | 280 | PAN | AFS | |
| Fineness distribution | #30 | 7.6 | 28.2 | 34.9 | 23.7 | 4.6 | 0.8 | 0.2 | 29.5 | |||
| #35 | 6.3 | 22.7 | 33.2 | 28.5 | 7.1 | 1.8 | 0.2 | 0.2 | 31.9 | |||
| #40 | 1.4 | 25.4 | 49.9 | 16.4 | 5.4 | 1.5 | 41.5 | |||||
| #45 | 1.3 | 23.2 | 34.4 | 23.9 | 13.7 | 3.3 | 0.2 | 46.1 | ||||
| #60 | 0.7 | 7.1 | 17.0 | 33.8 | 27.6 | 11.1 | 2.2 | 0.5 | 60.7 | |||
| #75 | 0.1 | 3.3 | 13.3 | 26.7 | 30.1 | 19.4 | 6.5 | 0.5 | 0.1 | 70.5 | ||
| #100 | 0.8 | 2.7 | 20.8 | 34.2 | 28.8 | 11.9 | 0.8 | 117.0 | ||||