Graphite Soft Felts

BZNCarbon offers high-quality graphite soft felts made from PAN, Rayon, or Pitch-based carbon fiber. These materials are treated under controlled high-temperature conditions to produce felts with superior thermal insulation, low ash content, and excellent chemical stability.

Our graphite soft felts are widely used in industrial furnace insulation and energy storage applications such as flow batteries. They are available in various grades and can be heat treated up to 2800°C, with halogen purification available upon request for ultra-high purity.

Product Features

High carbon purity
Low ash content (down to 10 ppm if purified)
No outgassing at high temperature
Excellent thermal insulation and low conductivity
Long operational lifespan
Heat-treated up to 2800°C
Halogen purification available

Application Areas

Furnace heat insulation (vacuum and inert atmosphere)
Flow battery felt electrodes
Thermal shielding materials
R&D and aerospace thermal applications

Graphite Felt Product Line

Graphite Soft Felt (PAN, Rayon, Pitch-based)
Rigid Graphite Felt / Boards / Shapes
Cylindrical graphite insulation parts
Flow Battery Graphite Felt Electrodes

Technical Grades Overview

Property	F1200 (PAN)	F2500 (PAN)	RF2500 (Rayon)
Burned Temp (°C)	1200	2500	2500
Density (g/cc)	0.14	0.13	0.10
Carbon Content (%)	96	99.9	99.9
Ash Content (ppm)	400	100	100
Ash (Purified) (ppm)	10	10	10

Available Sizes – Graphite Soft Felt

Dimension	Range
Thickness	3 mm – 12.7 mm
Width	1000 mm or 1200 mm (cut available)
Length	12 m – 30 m

Standard thicknesses like 5, 6, 8, 10, 12, and 12.7 mm are in stock.

PAN vs. Rayon Graphite Felt

PAN-based felt is more affordable, has longer service life, and is more resistant to oxidation—ideal for inner insulation in furnaces.
Rayon-based felt offers better thermal insulation with lower conductivity and doesn’t irritate skin during installation—often used in outer furnace layers to minimize energy loss.