Hard Rock garnet abrasive is a natural mineral abrasive. It is the best for water jet cutting in cost, cutting speed, and health hazards. Garnet sand 60# 80# 120# usually be used for waterjet cutting. A water jet manufacturer or an abrasive supplier can help the business determine the right abrasive type and grade. This results in an abrasive selection that will maximize the performance of the water jet cutting machine.
Chemical Composition – Garnet Abrasive
| Silica SiO2 | 34-40% |
| Iron(Fe2O3+FeO) | 25-31% |
| Alumina Al2O3 | 17-21% |
| Magnesium MgO | 5-6% |
| Calcium CaO | 5.0-10.0% |
| Manganese MnO | 0-1.0% |
Physical Characteristics – Rock Garnet
| Specific Gravity | 3.8-4.1/cm3 |
| Mohs Hardness | 7.5+ |
| Acid Solubility (HCL) | <1.0% |
| Bulk density | 1.8-1.9 g/cm3 |
| Chloride | 10-15ppm(25ppm max) |
| Colour | Red & Brown |
| Melting point | 1300℃ |
| Grain shape | Sub angular |
| Toxic substances | none |
| Conductivity | 25 ms/m |
Mineralogical Content –Hard Rock Garnet Abrasive
| Almandine garnet | ≥98 % |
| Quartz | ≤0.2% |
| Ilmenite | ≤0.5% |
| Others | ≤0.1% |
Hard Rock Garnet Abrasive Particle Size Distribution
| MM | MESH | PERCENTAGE RETENTION | ||||
| 1.400 | 12 | 12/24 | 20/40 | 20/60 | 30/60 | 80 |
| 0.850 | 20 | 0 | ||||
| 0.600 | 30 | 30-40 | 0-5 | 0-5 | ||
| 0.425 | 40 | 40-50 | 50-70 | 10-25 | 0 | |
| 0.300 | 50 | 0-5 | 10-20 | 25-50 | 0-10 | 0 |
| 0.250 | 60 | 0-10 | 25-45 | 45-60 | 30-40 | |
| 0.180 | 80 | 0-15 | 10-25 | 40-50 | ||
| 0.150 | 100 | 0-5 | 5-20 | 0-5 | ||
| 0.125 | 120 | 0-1 | ||||
