0.055mm Chromel A NiCr 80/20 nickel-chromium alloy for heating
cables, mats and cords
1.Process:
Wire:Material preparation→melting→re-melting→forging→hot
rolling→heat treatment→surface treatment→drawing(rolling)→finish
heat treatment→inspection→package→warehouse
2.Product features of nichrome wire:
1)Excellent anti-oxidation and mechanical strength at high
temperature;
2)High resistivity and low temperature coefficient of resistance;
3)Excellent reelability and forming performance;
4)Excellent welding performace
3.Application of all grades:
Cr20Ni80:in braking resistors,industrial furnaces,flat irons,
ironing machines, water heaters, plastic moulding dies, soldering
irons, metal sheathed tubular elements and cartridge elements.
Cr30Ni70:in industrial furnaces. well suited for reducing
atmospheres, as it is not subject to 'green rot'.
Cr15Ni60:in braking resistors,industrial furnaces,hot plates,
grills, toaster ovens and storage heaters. For suspended coils in
air heaters in clothes dryers, fan heaters, hand dryers.
Cr20Ni35:in braking resistors,industrial furnaces.In night-storage
heaters, convection heaters, heavy duty rheostats and fan heaters.
For heating cables and rope heaters in defrosting and de-icing
elements, electric blankets and pads, car seats, baseboard heaters
and floorheater.
Cr20Ni30:in solid hot plates, open coil heaters in HVAC systems,
night-storage heaters, convection heaters, heavy duty rheostats and
fan heaters.For heating cables and rope heaters in defrosting and
de-icing elements, electric blankets and pads, car seats, baseboard
heaters, floor heaters and resistors.
4.Wire packing:
In spool--when the diameter≤1.2mm
In coil--when the diameter>1.2mm
All the wire packd into cartons→cartons packed into plywood pallet
OR wooden case
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 | - |
