Two garnet series sourced from Inner Mongolia, China. Rock garnet for aggressive first-pass cutting and heavy mill scale removal; alluvial garnet for waterjet cutting, coating preparation and multi-pass recovery. Both test at Mohs 7.5–8.0 with free crystalline silica not detectable.
Sub-angular, sharper grain. Cuts faster on the first pass and breaks down sooner. Chloride < 1 ppm — the grade to specify for austenitic stainless, marine and nuclear work.
Grades: 4/8 · 8/12 · 20/40 · 30/60
Sub-angular to sub-rounded grain, tumbled by water over a very long time. Fractures less, so it can be recovered and reused. Lowest soluble salts: conductivity 48–83 µS/cm.
Grades: 12/24 · 20/40 · 30/60 · 80 · 120
Figures below are taken from our TDS and mill test certificates, not from marketing copy.
| Item | Alluvial / River | Rock Garnet |
|---|---|---|
| Hardness (Mohs) | 7.50 – 8.0 | 7.20 – 8.0 |
| Particle shape | Sub-angular to sub-rounded | Sub-angular (sharper) |
| Colour | Red pink | Reddish brown |
| Specific gravity | 3.8 – 4.3 g/cm³ | 3.8 – 4.3 g/cm³ |
| Bulk density | 2 – 2.5 g/cm³ | 2 – 2.5 g/cm³ |
| Garnet content | ≥ 97% | — |
| Chloride | < 10 ppm | < 1 ppm |
| Conductivity (aqueous extract) | 48 – 83 µS/cm | 119.3 µS/cm |
| Free crystalline silica | Not detectable | Not detectable |
| Free iron / heavy metals | None / None | None / None |
| Radioactivity | Not detectable | Not detectable |
| Melting point | 1170 – 1280 °C | 1170 – 1280 °C |
| Moisture | Non-hydroscopic | Non-hydroscopic |
| Solubility in water | Insoluble | Insoluble |
| Tyler mesh / aperture | #12/24 | #20/40 | #30/60 | #80 | #120 |
|---|---|---|---|---|---|
| 12 / 1700 µm | 0–5 | — | — | — | — |
| 14 / 1400 µm | 10–20 | — | — | — | — |
| 16 / 1180 µm | 20–30 | — | — | — | — |
| 20 / 1000 µm | 20–40 | 5–10 | — | — | — |
| 24 / 710 µm | 0–5 | 10–30 | — | — | — |
| 30 / 600 µm | — | 30–60 | 0–2 | — | — |
| 35 / 500 µm | — | — | 10–20 | — | — |
| 40 / 425 µm | 5–10 | 5–10 | 10–20 | — | — |
| 45 / 355 µm | 0–5 | 0–5 | 10–30 | 0–2 | — |
| 50 / 325 µm | 0–5 | 0–5 | 20–30 | 5–10 | — |
| 60 / 250 µm | — | — | 10–30 | 25–35 | — |
| 70 / 212 µm | — | — | 5–10 | 25–35 | 0–5 |
| 80 / 180 µm | — | — | 0–2 | 10–20 | 15–35 |
| 100 / 150 µm | — | — | — | 10–20 | 20–40 |
| 120 / 125 µm | — | — | — | — | 20–40 |
| 140 / 106 µm | — | — | — | — | 5–15 |
| -140 / 106 µm | — | — | — | — | 0–10 |
Ranges shown are the normal production band per grade, not single-batch values, which is why columns do not total 100%. Batch-specific Certificate of Analysis available on request.
| Application | Recommended grade | Series |
|---|---|---|
| Waterjet cutting | 80 mesh | Alluvial |
| Shipyard & heavy structural steel | 20/40 | Both |
| General fabrication blasting, pipe & plate | 30/60 | Alluvial |
| Stainless steel, marine & nuclear spec | 20/40, 30/60 | Rock (chloride < 1 ppm) |
| Epoxy floor anti-slip aggregate | 12/24 | Alluvial |
| Water filtration media | 12/24, 120 | Alluvial |
| Fine finishing, lapping & polishing | 120 | Alluvial |
25 kg woven PP bags · 1 tonne jumbo bags with discharge spout · palletised, fumigated to IPPC standard.
Up to 28 tonnes per 20 ft container, subject to destination road weight limits. Different grades can be mixed in one container — for example 80 mesh for a cutting shop and 30/60 for a blasting yard in the same shipment.
Origin: Ulanqab, Inner Mongolia, China. Samples (500 g) ship within three working days.