CFC Composites for Heat-Treatment

CFC Composites for Heat-Treatment


CFC Composites for Heat-Treatment

Technical Data – Key Points – CFC Stock Sizes

Heat-Treatment industries and Vacuum furnace users require a minimum amount of downtime while maximising their output and all the while being as cost effective as possible. A key part of this success is within the materials used for Heat-Treatment and in Vacuum furnaces. And for these reasons alone it is vital to choose the right CFC Composite.

Our CFC Composite materials with their properties, offer exceptional advantages, these include high inter-laminar strength, density, light-weight and high mechanical strength. Neftec’s CFC Composites offer the ideal salutations for high-temperature and heat-treatment environments, such as vacuum furnaces, Continuous casting, Sintering, hot Presses, and brazing.

Neftec Carbon/Carbon is suited and supports a wide array of heat-treatment industries and ideal for growth industries such as automotive and aerospace.


Key Points:

  • Ideal for machining into complex shapes and components
  • Retains strength throughout continuous heat cycles
  • Excellent Thermal conductivity and low thermal expansion
  • Extremely long service intervals, decreasing downtime of furnaces 
  • Excellent durability properties
  • Lower costs allowing reduced customer overheads
  • High Density and ILS
  • Shorter production times


  • CFC Furnace linings
  • CFC Sleeves
  • CFC Fans
  • CFC Nuts, bolts, rods, threaded bars
  • CFC Fixtures
  • CFC Brazing jigs
  • CFC Crucibles
  • CFC Grids and trays

Carbon Carbon TrayCarbon Carbon Tray

Neftec CFC Composite Properties




Material Grade



Bulk Density g/cm3 1.7 1.7+
Flexural Strength MPa 200 220
Inter-laminar Shear Strength (ILSS) MPa 18-19 19+
Compressive Strength MPa 120 200+
Young’s Modulus GPa 45 90
Tensile Strength MPa 120 145
( RT-1300C ) 10-6/C 1.3 1.3
Coefficient of Thermal Expansion 10-6/C 10 10
Thermal Conductivity W/m・K 35 35
12 12
Specific Heat 20C J/Kg・K 720 720
Electrical Resistivity μΩcm 2000 2500
Sharpy Impact Strength KJ/m2 20  20
Shore Hardness 75  75
Temperature Rating  2000°c  2000°c


Material Grade



Bulk Density g/cm3 1.5 1.65
Flexural Strength MPa 100 148
Inter-laminar Shear Strength (ILSS) MPa 10 9.5
Compressive Strength MPa 100 TBA
Young’s Modulus GPa 55 63.5
Tensile Strength MPa 100 200
( RT-1300C ) 10-6/C 1.1 1.1
Coefficient of Thermal Expansion 10-6/C 19 9
Thermal Conductivity W/m・K 32 33
10 10
Specific Heat 20C J/Kg・K TBA  TBA
Electrical Resistivity μΩcm NA 2800
Charpy Impact Strength KJ/m2  TBA  TBA
Temperature Rating  Celcius  2000°c  2000°c
Please note, data is taken from several batches to provide an average value and as such values are not guaranteed.

Standard sizes available


Carbon/Carbon Composite Size and Grade

Neftec Material Grade

Notes and uses
1000 X 1000 or 2000 x 1000 –  0.6/0.8T to 5T WL60, IC50 Long-fibre and Hybrid short-fibre, furnace insulation
1000 X 1000 x 1.2T to 30T  PC70/PC70H Machined, structural items – All furnace applications
1120 X 1120 x 1.2T to 30T  PC70/PC70H Machined, structural items – All furnace applications
1250 x 1250 x 1.5T to 20T PC70/PC70H Machined, structural items – All furnace applications
1000 X 2000 x 0.6T to 30T PC70 Shelfs, linings, Fixtures, base trays, PECVD  carriers
1000 x 500 x 130T PC70 Machined and structural items
2500 x 420 x 130 *  PC70 CFC Rollers
1500 x 420 x 60T * PC70 Machined items, heating elements


Carbon/Carbon Composite Threaded Rod

Neftec Material Grade

M4 X 1000mm to M50 x 1000mm PC70
Φ4 X 1000mm to Φ50 x 1000mm PC70


*Denotes this item is special order only

**The above technical data are typical measured values and are not guaranteed.

Further sizes  and bespoke sizes are available. To find out more on how Neftec Carbon Composites are the ideal solution for your Heat-Treatment needs please contact us for further information.