Spiral electric heating elements consist of cylindrical spirals formed by one or two resistive wires of suitable alloy depending on the application.
Its main features include the inclusion of a nickel-chrome alloy wire heating element and a normalized tension of -230 V.
The usual applications are: industrial dryers, air heaters, stoves, etc.
Moreover, and according to the alloy wire they contain, we can distinguish three types of models:

• M models, with a 20-5 quality and mainly intended for stoves.
• MS models, with a 80-20 quality and useful for all applications.
• MC models, with a 20-5 quality and used in quartz and infrared tubes.
• Product Description
  Grade: Ni80Cr20 ,also called Nikrothal 8,MWS-650,NiCrA,Tophet A,HAI-NiCr 80,Chromel A,Alloy A,N8,Resistohm 80, Stablohm 650,Nichorme V,Nikrothal 80 etc.Chemical Content(%)

  C	P	S	Mn	Si	Cr	Ni	Al	Fe	Other
  Max
  0.03	0.02	0.015	0.60	0.75~1.60	20.0~23.0	Bal.	Max 0.50	Max 1.0	-

  Mechanical Properties of nichrome wire

  Max Continuous Service Temperature:	1200ºC
  Resisivity 20ºC:	1.09 ohm mm2/m
  Density:	8.4 g/cm3
  Thermal Conductivity:	60.3 KJ/m·h·ºC
  Coefficient of Thermal Expansion:	18 α×10-6/ºC
  Melting Point:	1400ºC
  Elongation:	Min 20%
  Micrographic Structure:	Austenite
  Magnetic Property:	nonmagnetic

  Temperature Factors Of Electrical Resistivity

  20ºC	100ºC	200ºC	300ºC	400ºC	500ºC	600ºC
  1	1.006	1.012	1.018	1.025	1.026	1.018
  700ºC	800ºC	900ºC	1000ºC	1100ºC	1200ºC	1300ºC
  1.01	1.008	1.01	1.014	1.021	1.025	-

  Regular size of Nickel alloy wire :

  We supply products in the shape of wire,flat wire,strip.We can also make customized material according to useris requests.

  Bright and white wire–0.025mm~3mm

  Pickling wire:1.8mm~10mm

  Oxidized wire:0.6mm~10mm

  Flat wire:thickness 0.05mm~1.0mm,width 0.5mm~5.0mm