We are the only manufacturing enterprise which gathers electrical heating alloy wire & strip and heating cable in China .
Those are alloys of chemical composition copper + nickel with addition of manganese with a low resistivity (from 231.5 to 23.6 Ohm. Mm2/ft).
The most known, CuNi 44 (also called Constantan) presents the advantage of a very low temperature coefficient.
China Grade from chengxin alloy: CuNi1, CuNi2, CuNi6, CuNi8, CuNi10,CuNi14, CuNi19, CuNi22,CuNi23, CuNi30, CuNi34,CuNi40, CuNi44
Chemical Composition and Main Property of Cu-Ni Low Resistance Alloy |
PropertiesGrade | CuNi1 | CuNi2 | CuNi6 | CuNi8 | CuMn3 | CuNi10 |
Main Chemical Composition | Ni | 1 | 2 | 6 | 8 | _ | 10 |
Mn | _ | _ | _ | _ | 3 | _ |
Cu | Bal | Bal | Bal | Bal | Bal | Bal |
Max Continuous Service Temperature(oC) | 200 | 200 | 200 | 250 | 200 | 250 |
Resisivity at 20oC (Ωmm2/m) | 0.03 | 0.05 | 0.10 | 0.12 | 0.12 | 0.15 |
Density(g/cm3) | 8.9 | 8.9 | 8.9 | 8.9 | 8.8 | 8.9 |
Thermal Conductivity(α×10-6/oC) | <100 | <120 | <60 | <57 | <38 | <50 |
Tensile Strength(Mpa) | ≥210 | ≥220 | ≥250 | ≥270 | ≥290 | ≥290 |
EMF vs Cu(μV/oC)(0~100oC) | -8 | -12 | -12 | -22 | _ | -25 |
Approximate Melting Point( oC) | 1085 | 1090 | 1095 | 1097 | 1050 | 1100 |
Micrographic Structure | austenite | austenite | austenite | austenite | austenite | austenite |
Magnetic Property | non | non | non | non | non | non |
|
PropertiesGrade | CuNi14 | CuNi19 | CuNi23 | CuNi30 | CuNi34 | CuNi44 |
Main Chemical Composition | Ni | 14 | 19 | 23 | 30 | 34 | 44 |
Mn | 0.3 | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 |
Cu | Bal | Bal | Bal | Bal | Bal | Bal |
Max Continuous Service Temperature(oC) | 300 | 300 | 300 | 350 | 350 | 400 |
Resisivity at 20oC (Ωmm2/m) | 0.20 | 0.25 | 0.30 | 0.35 | 0.40 | 0.49 |
Density(g/cm3) | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 |
Thermal Conductivity(α×10-6/oC) | <30 | <25 | <16 | <10 | <0 | <-6 |
Tensile Strength(Mpa) | ≥310 | ≥340 | ≥350 | ≥400 | ≥400 | ≥420 |
EMF vs Cu(μV/oC)(0~100oC) | -28 | -32 | -34 | -37 | -39 | -43 |
Approximate Melting Point( oC) | 1115 | 1135 | 1150 | 1170 | 1180 | 1280 |
Micrographic Structure | austenite | austenite | austenite | austenite | austenite | austenite |
Magnetic Property | non | non | non | non | non | non |
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Jingyin chengxin alloy material co,.ltd is specialized in producing high / low resistance electric heating alloy in the form of wire,strip,bar,coil, including Ni-Cr-Fe, Ni-Cr,Cu-Ni,Manganin,Pure Nickel,Kama,Thermistor & Thermocouple compensation alloy wire .
Top quality and available price