Casting
Gilsonite in Cast Iron Pipe Fittings and Valve Castings
Pipe fittings, valve bodies and manhole covers are produced in large quantities in green sand foundries. Surface quality…
Metal Casting and Carbon Additives
Casting process guides and how carbon additives improve surface finish, shake-out and casting quality.
Casting
Better Shake-Out with Carbon Additives
Shake-out is where castings are separated from their moulds. Sand that sticks to castings slows production and increases…
Casting
How to Improve Casting Surface Finish
A smooth as-cast surface reduces machining, grinding and blasting time. These are the main levers. Finer sand gives…
Casting
Green Sand Casting Step by Step and the Role of Gilsonite
Green sand casting is the most widely used metal casting method in the world. "Green" means the sand…
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Data sheet
Foundry Grade Gilsonite
| Property | Typical value | Test method |
|---|---|---|
| Appearance | Black powder | Visual |
| Particle size | 100 – 300 mesh | Sieve |
| Volatile matter | 55 – 75 % | ASTM D3175 |
| Ash content, max | 5 % | ASTM D3174 |
| Moisture, max | 1 % | ASTM D95 |
| Softening point (R&B) | 150 – 200 °C | ASTM D36 |
| Typical dosage | 0.3 – 1.0 % (iron) | |
| Packing | 25 kg bags palletized; 1 MT jumbo bags for blending plants. | |
Typical values. The final specification is confirmed in the COA of each shipment.