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Graphite Felt

Graphite Felt

Graphite felts are designed for use as high temperature insulation in vacuum furnaces and inert gas furnaces, and they are graphitized under 2200C high temperature, so this ensures the very low ash content.

Applications of Graphite Felt

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Vacuum furnace insulation
index_ic01 Inert gas furnace insulation
index_ic01 Polysilicon/Monocrystalline silicon furnace insulation

Characteristics of Graphite Felt

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High purity
index_ic01  Low thermal conductivity
index_ic01 High-temperature stability
index_ic01 Easy machinability

Graphite Felt Technical Data
ITEM INDEX
Trademark Rayon-based Carbon Felt LTZ-124-5 Rayon-based Graphite Felt LTZ-124-6 PAN-based Carbon Felt LTZ-124-3 PAN-based Graphite Felt LTZ-124-1
Material RCF RCF PAN-CF PAN-CF
Bulk density(g/cm3) 0.10-0.12 0.08-0.10 0.14-0.15 0.12-0.14
Carbon(%) ≥98.5 ≥99 ≥98.5 ≥99
Thermal conductivity(1150oC W/m .k) 0.08-0.15 0.06-0.14 0.12-0.18 0.08-0.14
Tensile Strength (Mpa) 0.13 0.1 0.15 0.14
Crushing stress(at 10% compression N/cm2) 6-10 5-8 8-12 8-10
Ash(%) ≤0.05 ≤0.005 ≤0.05 ≤0.005
Processing temperature 1200oC 2300oC 1200oC 2300oC
Operating Condition in the air ≤400oC ≤400oC ≤400oC ≤400oC
Operating Condition in the vacuum ≥1500oC ≥2300oC ≥1500oC ≥2300oC
Operating Condition in the vacuum In the inert atmosphere ≥2300oC ≥3300oC ≥2300oC ≥3300oC
Spec lenght (m) 16 – 18 9 – 12
Wide (mm) 1000-1300
Thickness (mm) 3/5/8/10/12

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