PC70 Carbon/Carbon Springs

CFC springs, or Carbon/Carbomn Fiber Composite springs, (C/C) are innovative mechanical components made from carbon fiber-reinforced composites, designed to excel in high-temperature and demanding environments such as heat-treatment processes

Unlike traditional metal springs, CFC springs are lightweight, yet they offer exceptional strength, thermal stability, and resistance to thermal expansion, making them ideal for applications where extreme heat and precision are critical. 

In heat-treatment furnaces, where components are subjected to prolonged exposure to high temperatures, PC70 C/C springs maintain their structural integrity and mechanical properties, ensuring consistent performance without degradation. 

Their corrosion resistance and ability to withstand thermal cycling also reduce maintenance needs and extend service life. By incorporating PC70 C/C - CFC springs into heat-treatment equipment, manufacturers can achieve greater efficiency, reliability, and durability, even in the most challenging thermal environments.
 
Performance C/C Springs

The Carbon/Carbon spring is an excellent option for brazing applications. The springs are used to replace "deadweights" that are typically used in Brazing fixtures. Our C/C springs offer very precise and equal forces during heat-treatment brazing. This cannot be achieved in the same using a "deadweight" on a brazing fixture. Not only do you have a precise force using the C/C Spring you reduce the weight of your brazing fixture while having higher quality brazing results. 

C/C springs are considerably lighter, this allows users to have a smaller brazing fixture due to not needing to support the same weight as a traditional brazing fixture using deadweights. This allows users to increase their productivity by using more smaller higher performing fixtures due to the smaller fixture size and weight savings. 

Faster Production Cycles

C/C Springs do not require less thermal energy levels compared to deadweights to reach optimal brazing temperatures. 

Energy Efficiency 

C/C springs are more energy efficient due to excellent thermal conductivity. This makes a brazing fixture with a C/C spring more energy efficient. This helps reduce energy consumption which helps low overall production costs. 

Spring Types

Neftec offers 4 spring types. We can also produce customised springs based on the 4 types below if you want to know more contact us and we can discuss these options with you. 

Type 1

Outer Diameter - 32mm

Inner Diameter - 20mm

Free length - 40mm

Spring Constant - 20NM

Shrinkage - 7mm

 

Type 2

Outer Diameter - 50mm

Inner Diameter - 20mm

Free length - 25mm

Spring Constant - 20NM

Shrinkage - 5mm

Type 3

Outer Diameter - 50mm

Inner Diameter - 30mm

Free length - 30mm

Spring Constant - 25NM

Shrinkage - 5mm

Type 4

Outer Diameter - 50mm

Inner Diameter - 20mm

Free length - 40mm

Spring Constant - 35NM

Shrinkage - 7mm

Downloads 2025 - Material Data sheet

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