Our Technical Advices

How does the Carbon and metal wires conductivity compares in relation with temperature increase ? 

The evolution of electrical conductivity of metal and carbon are different with temeprature increase

 At the opposite of carbon yarns, metallic electro heating wires generally have a resistivity that increases with temperature, giving them a slight regulating effect at high températures.

 Carbon wires have their resistivity that decreases with temperature! At rather high températures, this may induce an acceleration of the damage through eventual hot spots​.

Compare carbon and metallic wires on the chart hereunder !

  • As for an example , for high temperature heating applications, the slightest difference of structure or damaged heating mat or wire will concentrate the current in this small zone, that becomes more and more conductive

Conductivity.jpg

Other related Links

☉ Metallic fibers comparative thermal expansion
☉ Metal properties table

☉ Ultra fine multi-filaments yarns, withstanding mechanical bending or fatigue stress, or washing constraints

☉ Insulated conductive or resistive yarns withstanding high temperature constraints, as well as mechanical fatigue due to thermal cycles

☉ Flexible heating structures from TIBTECH