Foundry
Loss on Ignition (LOI) in Green Sand and Gilsonite
Loss on ignition is a simple test that tells you how much combustible material is in your sand.…
Gilsonite for Foundry Sand
Foundry grade gilsonite for green sand: lustrous carbon, dosage, sea coal replacement and defect control.
Foundry
Foundry Gilsonite Dosage Guide
The right dosage depends on the metal, casting size and sand system. Measure loss on ignition (LOI) and…
Foundry
Lustrous Carbon Explained: Why It Matters for Castings
Lustrous carbon is a thin, shiny graphite-like film that forms on the mould surface when hydrocarbons crack at…
Foundry
Gilsonite vs. Sea Coal in Green Sand
Sea coal (finely ground bituminous coal) has been the traditional carbon additive in green sand for over a…
Foundry
Gilsonite in Foundry Sand: How It Works
Green sand moulding is the most common way to make iron castings. Carbonaceous additives are added to the…
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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.