Powder
Worm-like expanded graphite flakes after thermal expansion of intercalated flake graphite; low bulk density, high surface area.
Share furnace type, diameter, grade, tonnage, and destination port for a factory quote.
Ordering
MOQ, packing, lead time, and export documents for factory-direct shipments.
From 1 container / negotiated MT on stock grades
Wooden cases with moisture protection for ocean freight
Typically 15–30 days depending on diameter and grade
FOB, CIF, CFR available
COA, packing list, commercial invoice, B/L
Overview
Worm graphite (expanded graphite flake) is the vermicular product after expandable graphite is heated. Bulk density is very low; the open structure suits thermal insulation fillers, adsorbents, and further milling into flexible graphite powder.
Supply form is typically loose worms or lightly densified packs. Expansion ratio and ash level define grade.
Specs
Key dimensions and performance values. Request the full drawing pack with your RFQ when needed.
| Performance classification | P erformance parameters | S pecific data |
| Physical properties | Packing density | 0.002-0.015 g/cm 3 |
| True density | 2-2.25 g/cm 3 | |
| Particle size – Fine powder | ||
| Particle size – Medium powder | 100-500μm | |
| Particle size – Coarse powder | >500μm | |
| Expansion factor | 100-300 times | |
| Chemical properties | Carbon content | More than 90%-99% |
| Ash content | About 1% to 10% | |
| Electrical conductivity | 10 2 -10 4 S/m | |
| Thermal properties | Thermal conductivity | 0.1-0.5 W/(m.k) |
Send grade, size, quantity (MT) and destination port.
