Factory Price High Quality Ni80cr20 Cr30ni70 Nichrome Resistance Alloy Heating Wire

Resistance electric heating wire has strong antioxidant properties, but a variety of gases in furnaces such as air, carbon, sulfur, hydrogen and nitrogen atmosphere, still have a certain impact on it. 

Although these heating wires all have had antioxidant treatment, the transportation, winding, installation and other process will cause damage to a certain extent and reduce its service life.

In order to extend the service life, customers need to do pre oxidation treatment before using.This methos is to heat alloy elements with have installed completely in the dry air to the temperature  (lower 100-200C than its maximum using temperature), heat preservation for 5 to 10 hours, then cooling slowly with furnace.

 Cr20Ni80 wire technical index

Size:  

wires: dia 0.06-10mm                   Ribbons:0.05*0.2-2.0*6.0mm 

Strips:0.5*5.0-5.0*250mm       Bars:D10-100mm 

Ribbon (flat wire) 

Thickness: 0.023-0.8 mm (0.0009-0.031 inch) 

Width: 0.038-4 mm (0.0015-0.157 inch) 

Width/thickness ratio max 60, depending on alloy and tolerance 

Other sizes are available on request.

Cr20Ni80 wire features and advantages
1. High using temperature, the maximum using temperature can reach 1400C 
2. Low temperature coefficient of resistance
3. Lower thermal expansion coefficient than the Ni-base super-alloys.
4. High electrical resistivity
5. Good corrosion resistance under high temperature, especially under the atmosphere containing sulfides 
6. High surface load
7. Creep-resistant 
8. Lower raw-material cost, Lower density and cheaper price compared with Nichrome wire.
9. Superior oxidation resistance at 800-1300ºC
10. Long service life

Application of Cr20Ni80 wire

Our products Cr20Ni80 wires are salable and widely used for making heating equipment like industrial furnace, civil heating appliance, various electrical resistors and locomotive braking resistor, infrared equipment, liquefied gas infrared heat-resisting net, different kinds of igniting and radiating electrodes and voltage-regulating resistors for motors and so on in Metallurgical machinery, medical, chemical, ceramics, electronics, electrical appliance, glass and other civil or industrial fields.

Packaging & Shipping

Package of Cr20Ni80 wire:Goods are supply in coil or on spool, Carton or wooden case in outside as demanded. 

Shipping of Cr20Ni80 wire: By vessel or by train from any Chinese port, Samples can be delivered by International express.

Our Services

DKJL refractories exporting company is one of the most professional suppliers of refractories in China. Our main products are refractory and thermal insulation materials, heating elements, industrial ceramics. They are available in various sizes and shapes. Our products enjoy a good reputation for their excellent quality and service in domestic and international markets.   

 

 

FAQ

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