Expandable graphite
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  • Expandable graphite

Product Details

Expanded graphite, after being subjected to high-temperature, instantaneous treatment, transforms from flake-like to worm-like structures and can expand in volume by a factor of 100 to 400. This expanded graphite retains the properties of natural graphite, exhibiting excellent expansibility, a loose and porous structure, and a wide temperature resistance range under oxygen-barrier conditions—from -200°C to 3000°C. It remains chemically stable under high-temperature, high-pressure, or radiation conditions and finds extensive applications in dynamic and static seals across industries including petroleum, chemical engineering, power generation, aerospace, automotive, shipbuilding, and instrumentation.

 

Ultra-low sulfur expandable graphite

Specifications Fixed carbon Ash content Volatile matter Expansion rate Sulfur content pH value Moisture Material retained on the sieve
DL32 90-99.9% ≤10 ≤10 200-400 ≤0.03 4-6 ≤1.0 ≥80
DL50 200-350
DL80 150-250
DL100 80-150

 

Common expandable graphite

Specifications Fixed carbon Ash content Volatile matter Expansion rate Sulfur content pH value Moisture Material retained on the sieve
Before expansion After expansion
DL32 90-99.9% ≤10 ≤12 200-400 ≤2.2 ≤1500 4-6 ≤1.0 ≥80
DL50 200-350
DL80 150-250
DL100 100-200

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