CFC Composites for Solar

CFC Composites for Solar

CC Composites for solar

CFC Composites for Solar

Technical Data – Key Points – CFC Sizes

CFC Composites for Solar production are ideal for manufacturers who are looking for an alternative to bulky and heavy graphite that can also aid the increase in  productivity while reducing their overall costs. The Neftec Corporation has been supporting the Photovoltaic industry for over a decade with their CFC Composites for solar.

Our CFC rods, Heat-Shields and Heater-plates offer exceptional durability, life-span and quality for Polysilicon production. PECVD CarrierNeftec also supplies parts for many other applications, this includes Crucible reinforcement parts, heat-shielding, molten silicon sealing components, along with our standard parts that include bolts and nuts, all these aid the production of Silicon Ingot production.

The manufacture of Solar cells have several stages of production that require highly technical materials to cope with the rigours of these manufacturing environments. C/C has always been a material that has been able to cope with these environments. Our CFC Composites for solar is not only extremely light, but it offers high strength, superior longevity, cost reductions.

Today you will find Neftec CFC Composites for solar are widely used in the production of silicon monocrystals and we offer a list of applications suited for silicon monocrystal production. These include; susceptors for CVD equipment and CFC Boats and carrier plates, these trays are light and well suited for the PECVD process during Solar Cell production.

Contact us today to find out how Neftec can help you and your Photovoltaic production needs.

Key Points

  • High Inter-laminar strength
  • Exceptional machining characteristics, ideal for complex shapes and components
  • Retain strengths throughout continuous heat cycles
  • Excellent durability
  • Extremely long service intervals, decreasing downtime of furnaces.
  • Lower costs
  • High Density
  • Short manufacturing and lead times


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 2800 2500
Sharpy Impact Strength KJ/m2 20  20
Shore Hardness 75  TBA
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 130T * 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

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

**Further 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