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Hot Sale N7 Ni70Cr30 Strip Nickel Chromium Alloy Strip

Short Description:

Nickel chrome alloy has high resistivity, good anti-oxidation properties, high temperature strength, very good form and weld ability.
It is widely usded in electrical heating element material, resistor, industrial furnaces, etc.
Ni70Cr30 is a nickel - chromium alloy, with a nickel content of approximately 70% and a chromium content of about 30%.
It features a high melting point, high density, high strength, good hardness and toughness, excellent oxidation and corrosion resistance. It is widely used in aerospace, power, metallurgy, electronics, automotive and other fields, and has certain characteristics in hot - working, cold - working and welding processes.


  • Place of Origin: Shanghai,China
  • Brand Name: TANKII
  • Shape: Strip
  • Material: Nickel Alloy
  • Chemical Composition: 80%Ni,20%Cr; 70%Ni,30%Cr; 60%Ni,15%Cr
  • Product Name: Good Performance of Ni80Cr20 Wire 0.55mm Nickel Chromium Alloy Wire
  • Color: Silver White
  • Purity: 70%Ni
  • Width: 100mm
  • Resistivity: 1.09+/-3%
  • Product Detail

    FAQ

    Product Tags

    Propertes/Grade NiCr 80/20 NiCr 70/30 NiCr 60/15 NiCr 35/20 NiCr 30/20
    Main Chemical Composition(%) Ni Bal. Bal. 55.0-61.0 34.0-37.0 30.0-34.0
    Cr 20.0-23.0 28.0-31.0 15.0-18.0 18.0-21.0 18.0-21.0
    Fe ≤ 1.0 ≤ 1.0 Bal. Bal. Bal.
    Max Working Temperature(ºC) 1200 1250 1150 1100 1100
    Resistivity at 20ºC
    (μ Ω · m)
    1.09 1.18 1.12 1.04 1.04
    Density(g/cm3) 8.4 8.1 8.2 7.9 7.9
    Thermal Conductivity
    (KJ/m· h· ºC)
    60.3 45.2 45.2 43.8 43.8
    Coefficient of Thermal Expansion(α × 10-6/ºC) 18 17 17 19 19
    Melting Point(ºC) 1400 1380 1390 1390 1390
    Elongation(%) > 20 > 20 > 20 > 20 > 20
    Micrographic Structure austenite austenite austenite austenite austenite
    Magnetic Property nonmagnetic nonmagnetic nonmagnetic nonmagnetic nonmagnetic

    Product Description
    Grade: Ni80Cr20 ,also called MWS-650,NiCrA,Tophet A,HAI-NiCr 80,Chromel A,Alloy A,N8,Resistohm 80, Stablohm 650,Nichorme V,N 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

    Process:

    Wire:Material preparation→melting→re-melting→forging→hot rolling→heat treatment→surface treatment→drawing(rolling)→finish heat treatment→inspection→package→warehouse

    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

    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.


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