Excellent insulation at temperatures above 2000℃! SGL's graphite molded insulation materials 【MFA】/【RFA】.
The molded insulation material MFA/RFA is based on rayon-based carbon fibers. Rayon-based fibers have a large surface area and high radiation effectiveness. Therefore, they can exhibit higher insulation performance. <Main Features> ◎ Excellent insulation performance ◎ High-temperature stability ◎ Lightweight ◎ High purity (ash content < 20ppm) ◎ Two types: short fibers (MFA) and long fibers (RFA) ◎ Surface protection with various coatings
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basic information
<Material Types> ■ Short Fiber Type MFA ■ Long Fiber Type RFA <Main Properties> ■ Density 0.17g/cm3 ■ Ash Content < 1000 ppm (standard) < 20 ppm (purified) ■ Thermal Conductivity 0.35 W/m-K (1000℃) 0.60 W/m-K (1500℃) 0.95 W/m-K (2000℃) ■ Maximum Operating Temperature 2000℃ *Higher temperatures are possible with heat treatment <Size and Specifications> ■ Standard Size (Sheet) 1524mm x 1219mm ■ Thickness (Sheet) 20mm / 30mm / 40mm / 45mm / 50mm ■ Coating ・ Expanded Graphite Foil (both sides) ・ C/C Composite (both sides)
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Applications/Examples of results
Various types of heat treatment furnaces Brazing furnace Sintering furnace Vacuum deposition furnace Silicon and other crystal growth furnace (for semiconductors) Fiber optic manufacturing furnace
Line up（2）
| Model number | overview |
|---|---|
| SIGRATHERM MFA | A "short fiber" type of rayon-based molded insulation material. It is a graphite felt insulation material with a purity of over 99%, made from carbon fiber chop and resin. |
| SIGRATHERM RFA | A "long fiber" type of rayon-based molded insulation material. It is a graphite felt insulation material with a purity of over 99%, made from graphite soft felt GFA and resin. It has lower dust generation compared to the short fiber MFA. |
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Company information
SGL Carbon Group has a sales and service network in over 100 countries worldwide and has 29 manufacturing sites. (As of October 2023) SGL Carbon Japan Co., Ltd. is a Japanese subsidiary wholly owned by the group's headquarters, SGL CARBON SE.