CFC Composites for Heat-Treatment

CFC Composites for Heat-Treatment


cfc composites

CFC Composites for Heat-Treatment

Technical Data – Key Points – CFC Stock Sizes

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

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

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

CFC Composites

CFC Composites – 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

CFC Composites CFC Composites

Neftec CFC Composite Properties





Material Grade




Bulk Density g/cm3 1.65+ 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 120 150
( RT-1300C ) 10-6/C 1.0 1.0
Coefficient of Thermal Expansion 10-6/C 10.4 10.4
Thermal Conductivity W/m・K 35 35
12 12
Specific Heat 20C J/Kg・K 720 TBA
Electrical Resistivity μΩcm 2000 1800
Sharpy Impact Strength KJ/m2 20 20
Shore Hardness   75  75
Temperature Rating    2000°c  2000°c

Material Grade




Bulk Density g/cm3 1.65 1.65
Flexural Strength MPa 180 148
Inter-laminar Shear Strength (ILSS) MPa 16 11
Compressive Strength MPa 110 TBA
Young’s Modulus GPa 45 63.5
Tensile Strength MPa 120 200
( RT-1300C ) 10-6/C 1.1 1.1
Coefficient of Thermal Expansion 10-6/C 10.4 9
Thermal Conductivity W/m・K 100 33
20 10
Specific Heat 20C J/Kg・K 720  TBA
Electrical Resistivity μΩcm 1400 2800
Charpy Impact Strength KJ/m2  20  TBA
Temperature Rating  Celcius  2400°c  2000°c

Material Grade




Bulk Density g/cm3 1.5  
Flexural Strength MPa 100  
Inter-laminar Shear Strength (ILSS) MPa 10  
Compressive Strength MPa 100  
Young’s Modulus GPa 55  
Tensile Strength MPa 100  
( RT-1300C ) 10-6/C 1.1  
Coefficient of Thermal Expansion 10-6/C 19  
Thermal Conductivity W/m・K 32  
Specific Heat 20C J/Kg・K TBA  
Electrical Resistivity μΩcm NA  
Charpy Impact Strength KJ/m2  TBA  
Temperature Rating  Celcius  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/PC30 Machined, structural items – All furnace applications
1120 X 1120 x 1.2T to 30T  PC70/PC70H/PC30 Machined, structural items – All furnace applications
1250 x 1250 x 1.5T to 20T PC70/PC70H/PC30 Machined, structural items – All furnace applications
1000 X 2000 x 0.6T to 30T PC70/PC30 Shelfs, linings, Fixtures, base trays, PECVD  carriers
1000 x 500 x 130T PC70/PC30 Machined and structural items
2200 x 250 x 130 *  PC70 CFC Rollers
500 x 420 x 60T * PC70//PC30 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.

Follow us for further updates.