Graphite
Graphite This is an intumescent material which expands when heated by up to 400 times.
It is used as a fire retardant and is steel production. During a fire it expands and fills openings and therefore restricts the spread of the fire.
The material originates in China and Mexico.
Specification
Graphite
| Specific Gravity | 4.10 or 4.20 g/cm3 min |
| BaSO4 | 85% or 90% min |
| Extractable Carbonates | 3000 mg/l max |
| Hg | 1.00ppm/l max |
| Cd | 3.00ppm max |
| Water Alkaline Earth Metals as Calcium | 250 ppm max |
| Moisture | 1.00% max |
| Residue > 75 micrometers | 3.00% max |
| Particles < 6 micrometers in equivalent spherical diameter | 30.00% max |
