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Special Carbon Series

For Energy Source

For Electrospark Processing

For Metallurgy and Non-ferrous Metal Continuous Casting

For Semiconductor

For Optical Fiber

For Heat Treatment

For Mechanical Seal

For Glass and Ceramics

Carbon-carbon Compound Material

Carbon Brush Series

Physical Property

Home → Products → Special Carbon Series → For Optical Fiber

For Optical Fiber

Graphite parts used to manufacture the optical fiber preform

Parts such as graphite heater, heating unit, central tube and muffle tube used during the drawing process of optical fiber

Thermal insulation carbon felt, soft felt and hard felt used in the optical fiber stretch

High-purity graphite heater, central tube, muffle tube and thermal insulation carbon felt are required during the optical fiber preform manufacturing and drawing processes.

Physical Properties(Typical)
Material	Bulk Density	Shore Hardness	Flexural Strength	Compressive Strength	Elastic Modulus	Thermal Expansion Coefficient	Thermal Conductivity	Ash Content
Material	g/cm³	Shore Hardness	MPa	MPa	GPa	10^-6/℃	W/(m·K)	ppm
IG-120	1.78	55	39.2	88.2	10.8	4.7	104	< 20
IG-210	1.78	55	41.2	83.3	9.8	4.6	116	< 20
IG-310	1.85	60	49.0	103	11.8	5.0	128	< 20
ISO-680	1.82	80	76.4	172	13.2	5.6	70	< 20
IG-510	1.90	60	53.9	103	11.8	4.8	139	< 20


Central Tube	Heater

Muffle Tube	Carbon Felt