
Low Resistance Copper Nickel Alloy Wire Cupronickel Metallic Colored Steel Wire
General Introduction
Copper Nickel Alloys(Cupro-nickel)
Principally destined for the manufacturing of low temperatures
electric resistances so as heating cables, shunts, resistances for
automobile, they have a maximum operating temperature of 752
degrees Fahrenheit.
They do not therefore intervene in the field of resistances for
industrial furnaces.
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.
Advantages:
Very good resistance to corrosion
Very good malleability
Very good solderability
Chemical Composition and Properties
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 (Ω*mm²/m) | 0.03 | 0.05 | 0.1 | 0.12 | 0.12 | 0.15 | |
Density(g/cm³) | 8.9 | 8.9 | 8.9 | 8.9 | 8.8 | 8.9 | |
Thermal Conductivity(α×10-6ºC) | <100 | <120 | <60 | <57 | <38 | <50 | |
Tensile Strength(Mpa) | ≥210 | ≥220 | ≥250 | ≥270 | ≥290 | ≥290 | |
EMF vs Cu(μVºC)(0~1000ºC) | -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 | 1 | 1 | |
Cu | Bal | Bal | Bal | Bal | Bal | Bal | |
Max Continuous Service TemperatureºC) | 300 | 300 | 300 | 350 | 350 | 400 | |
Resisivity at 20ºC (Ω*mm²/m) | 0.2 | 0.25 | 0.3 | 0.35 | 0.4 | 0.49 | |
Density(g/cm³) | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | |
Thermal Conductivity(α×10-6ºC) | <30 | <25 | <16 | <10 | <0 | <-6 | |
Tensile Strength(Mpa) | ≥310 | ≥340 | ≥350 | ≥400 | ≥400 | ≥420 | |
EMF vs Cu(μVºC)(0~1000ºC) | -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 |
Shanghai Tankii Alloy Material Co.,Ltd
Shanghai Tankii Alloy Material Co., Ltd.specialized in production of Resistance Heating Alloy, Nickel Chromium Alloy, Iron Chromium Aluminum Alloy, Nickel Aluminum Alloy, Manganin, Copper Nickel Alloy, thermocouple wire, pure nickel and other precision alloy materials in the form of round wire, ribbon wire, sheet, tape, strip, rod and plate.
We’ve already got ISO9001 quality system certificate and approval of ISO14001 environmental protection system.
We own a complete set of advanced production flow of refining, cold reduction, drawing and heat treating etc. We also proudly have independent R&D capacity.
Shanghai Tankii Alloy Material Co., Ltd has accumulated lots of experiences over forty years in this field. During forty years, hundreds of management elites and high science and technology talents were employed.They participated in every walk of the company life, which make our company keep blooming and invincible in the competitive market.
Based on the principle of “first quality, sincere service”, our managing ideology is pursuing technology innovation and creating the top brand in the alloy field. We persist in Quality - the foundation of the survival. It is our forever ideology to serve you with full heart and soul. We committed to provide customers all over the world with high-quality, competitive products and perfect service.
Our products, such us nichrome wire, nichrome strip, fecral wire, fecral strip, thermocouple wire, nickel wire, nickel strip have been exported to Europe, USA, India, Southest Asia, South America,etc.
We are willing to establish strong and long-time partnership with our customers