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Chromel A/Alloy A/Alloy 650/Resistohm 80 Nickel Alloy Flat Wire Tape
Chemical Composition and Main Properties of Nichrome | ||||||
Properties Grade | NiCr 80/20 | NiCr 70/30 | NiCr 60/15 | NiCr 35/20 | NiCr 30/20 | |
Main Chemical Composition | Ni | Balance | Balance | 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 | Balance | Balance | Balance | |
Max Continuous Service Temperature(oC) | 1200 | 1250 | 1150 | 1100 | 1100 | |
Resisivity 20oC (Ω mm2/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 | Weak magnetic | Weak magnetic |
NiCr 80/20 is a nickel-chromium alloy (NiCr alloy) characterized by
high resistivity, good oxidation resistance and very good form
stability. It is suitable for use at temperatures up to 1200°C,and
hold a superior service life compared to Iron chromium alumium
alloys.
Typical applications for NiCr80/20 are electric heating elements in
home appliances,industrial furnaces and resistors(wirewound
resistors,metal film resistors), flat irons, ironing machines,
water heaters, plastic moulding dies, soldering irons, metal
sheathed tubular elements and cartridge elements, Electric motor.