Powder
Expandable graphite used as an intumescent flame-retardant additive in plastics, coatings, and building materials.
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
Expandable graphite fire-retardant grades expand into a char-like layer when exposed to heat, limiting oxygen and heat transfer. They are compounded into polymers, foams, intumescent coatings, and cable compounds.
Performance depends on expansion ratio, onset temperature, and particle size distribution suited to the host matrix.
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.
