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CARBON PRODUCTS

CARBON FIBER COMPOSITES

Carbon fiber composite (CFC) is a relatively new material which, by virtue of being chemically inert, and having additional advantages of high strength, light weight and thermal resistance, is finding increasing industrial application.

CFC is suitable for use as hot face linings in pressure quench furnaces offering maximum insulation protection, and hence, package lifetime.

Its high strength-to-weight ratio makes it the ideal choice for structural assemblies and fixtures for work-piece support in vacuum, sintering, HIP, and semiconductor furnaces. Typical designs can yield greatly increased charge capacities of between 30 and 50%.

High density, high strength fastener grade materials are ideal replacements for graphite and molybdenum fasteners.

Application ranges up to 2800 °C with inert gas or vacuum. Extremely low wall thickness of 4 mm. Advantages are: reduction of thermal mass and consequently, a reduction in the energy utilized, reduction of cycle times. Furnace is easier to service, because the retorts can be removed from the furnace by hand.

Available Sizes and Main Properties

Thickness (mm)		Width (mm)	Length (mm)
Sheet	Plate
0.8, 1.2, 1.6, 2	3, 5, 8, 10	1000	1500

Properties
Bulk density (g/cm³)	1.4 - 1.7
Flexural strength (MPa)	60 - 100
Thermal conductivity (W/mK)	0.05 - 0.11
Carbon content (%)	≥98
Ash content (%)	≤0.05
Processing temperature (in inert gas) (°C)	2800
Thermal expansion coefficient	0.8 - 2.5

Characteristics and Benefits

Chemically inert
High strength, light weight. Because of its high strength-to-weight ratio, ideal for structural assemblies, fixtures and supports in furnaces
Stronger than graphite and molybdenum materials, so CFC is an ideal replacement
High thermal resistance. Can be used up to 2800 °C in inert gas or vacuum
Furnaces are easier to service as the fixtures can be removed by hand

Applications

Fixtures and supports in high temperature furnaces
Automotive
Engine components
Brakes
Cylinder liners and panels
Semiconductor processing
Structural members for carriers support (halogen purified)
Glass manufacturing
Transfer components in hot glass handling

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