Graphite dispersions in water
The Hidrograf product line is a natural crystalline graphite in an aqueous suspension, with dispersing and stabilising elements.
With an average particle size (d50) of 7 to 9 microns and a minimum carbon concentration of 99.5%.
The products are supplied in a concentrated form and need to be diluted with water before use, with constant stirring to obtain a homogeneous dispersion. The dilution should be in accordance with the size and complexity of parts to be produced.
The Hidrograf line is the right solution for:
- Forges;
- Release agents;
- Seals;
- Hydraulic Cardboards;
- Gaskets.
Chemical Properties
| Products | Parameters | |||
| Carbon % | Ash % | [Ph] | ||
| Hidrograf 271 | G | ≥ 99,5 | ≤ 0,5 | * |
| T | 99,9 | 0,1 | 11,1 | |
| Hidrograf 301 | G | ≥ 99,5 | ≤ 0,5 | * |
| T | 99,9 | 0,1 | 11,2 | |
| Hidrograf 50 | G | ≥ 99,5 | ≤ 0,5 | * |
| T | 99,9 | 0,1 | 6,3 | |
Physical Properties
| Mesh size | Accumulated Retained in % | |||
| ASTM Mesh | Laser granulometry | Concentration of solids (%) | Concentration of water (%) | |
| µm | D50 | |||
| Hidrograf 271 | G | ≤ 9,0 | 25-29 | 71-75 |
| T | 6,2 | 27,3 | 72,7 | |
| Hidrograf 301 | G | ≤ 9,0 | 27-33 | 67-73 |
| T | 6,2 | 30,2 | 69,8 | |
| Hidrograf 50 | G | ≤ 7,0 | 45-55 | 45-55 |
| T | 6,4 | 49,6 | 50,4 | |
| * = Not specified T = Typical value G = Guaranteed limits | ||||