
Copper Nickel alloy description:
CuNi alloy is a copper-nickel alloy (CuNi alloy) with medium resistivity for
medium-low temperature resistances. The alloy is suitable for use
at temperatures up to 400° C (750° F)
CuNi alloy wire is very malleable and has a good resistance to corrosion until
temperatures of 400° C. Ideal applications areas are all types of
resistances used at low temperature.
Constantan is a type of resistance alloy, which is made up of copper and nickel as the main components.
It has a low temperature coefficient of resistance (TCR), and a wide operating temperature range (below 500°C). It has good properities on mechanical working, high resistance of corrosion. It is used for variable and strain resistance of corrosion. It is used for variable and strain resisitance elements in alternative instruments.
Chemical composition and main properties
main property type | Cuni1 | CuNI2 | CuNI6 | CuNi8 | CuNI10 | CuNi14 | CuNi19 | CuNi23 | CuNi30 | CuNi34 | CuNI44 | ||
main chemical composition | Ni | 1 | 2 | 6 | 8 | 10 | 14.2 | 19 | 23 | 30 | 34 | 44 | |
MN | / | / | / | / | / | 0.3 | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 | ||
CU | rest | rest | rest | rest | rest | rest | rest | rest | rest | rest | rest | ||
max working temperature | / | 200 | 220 | 250 | 250 | 300 | 300 | 300 | 350 | 350 | 400 | ||
density g/cm3 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | ||
resistivity at 20 °c | 0.03 ± 10% | 0.05± 10% | 0.10± 10% | 0.12± 10% | 0.15± 10% | 0.20± 5% | 0.25± 5% | 0.30± 5% | 0.35± 5% | 0.40± 5% | 0.49± 5% | ||
temperature coefficient of resistance | <100 | <120 | <60 | <57 | <50 | <38 | <25 | <16 | <10 | -0 | <-6 | ||
tensile strength mpa | >210 | >220 | >250 | >270 | >290 | >310 | >340 | >350 | >400 | >400 | >420 | ||
elongation | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | ||
melting point °c | 1085 | 1090 | 1095 | 1097 | 1100 | 1115 | 1135 | 1150 | 1170 | 1180 | 1280 | ||
coefficient of conductivity | 145 | 130 | 92 | 75 | 59 | 48 | 38 | 33 | 27 | 25 | 23 |
FAQ
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you
want.
If we do not have, for spool wire, we can produce 1 spool, about
2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will us arrange the
delivery for sample order?
Just need to provide your address information, we will check the
express cost, you can arrange the express cost together with sample
value.
4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery
and total amount. Let's talk more in details after getting your
detailed requirements.
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can
provide, customer need to bear the International express cost.
Ohmalloy Material Co.,Ltd
Ohmalloy Material Co.,Ltd is a high-tech enterprise which specialized in making all kinds of alloy such as high resistance alloy, low-resistance copper nickel alloy, precision alloy, FeCrAl alloy and thermocouple Alloy.
Ohmalloy Material Co.,Ltd have a full production line from melting, surface cleaning, rolling and slitting, full set of testing machine and can meet all kinds of technical requirement from customer. Our product is widely used in heating equipment, big steel mill, mineral, electrical equipment, food machinery, auto industry, aerospace industry. Our product not only is popular in domestic market, but also been exported to all over the world.
Our company aims to be the best-quality alloy producer in the
world. We insist on developing the more advanced alloy strip
technology, to serve all the customer, improve people’s living
level, make a more green earth in the future