Garnet is an efficient and cost effective substitute for silica sand and mineral slag in most blast cleaning operations. The high specific gravity and tough, durable grains allow reduced material usage and minimum dust levels. Many users recycle the hard almandine garnet grain up to eight times for added benefit.

Grain shape Blocky, sub-angular to sub-rounded grains (uncrushed)
Color Deep red, reddish brown
Water solubility Insoluble under standard conditions. (20°C, distilled water)
Hardness 7.5 – 8.0 per Moh’s scale
Specific gravity 4.0 – 4.1
Certifications and approvals California Air Resource Board, MIL-A-22262B(SH) and QPL-22262.
Acid solubility < 1%
Melting point 1,315°C
Chloride content < 25 PPM
Free silica content < 0.5%
Available sizes #8/12 – #120 mesh (U.S. standard screen)
Packaging options Packaging is available to customers specifications. Standard packaging includes 25 kg and 1 metric ton bags.
silicon dioxide (SiO2) 35%
ferric oxide (Fe2O3) 33%
aluminum oxide (Al2O3) 23%
magnesium oxide (MgO) 7%
calcium oxide (CaO) 1%
manganese oxide (MnO) 1%