Enameled Copper Based Alloys Lacquered Resistance With Hydrogen Annealing Treatment
Enameled Copper Wire Lacquered Resistance Constantan CuNi44 Alloy Wire
Enamelled CuNi44 is a copper-nickel alloy (Cu55Ni44 alloy) with low resistivity for use at temperatures up to 400° C.
Enamelled CuNi44 is kind of low resistance (heating) alloy. It is one of the key materials of the low-voltage electrical products. It is widely used in low-voltage circuit breaker, electric blankets.thermal overload relay and other low-voltage electrical product.
1.Product Details
1)Normal composition%
| Nickel | 44 | Manganese | 1 |
| Copper | Bal. |
2)Typical Mechanical properties(1.0mm)
| Yield strength | Tensile Strength | Elongation |
| Mpa | Mpa | % |
| 250 | 420 | 25 |
3)Typical Physical properties
| Density (g/cm3) | 8.9 |
| Electrical resistivity at 20ºC (Ωmm2/m) | 0.49 |
| Temperature factor of resistivity(20ºC~600ºC)X10-5/ºC | -6 |
| Conductivity coefficient at 20ºC (WmK) | 23 |
| EMF vs Cu(μV/ºC )(0~100ºC ) | -43 |
| 4)Coefficient of thermal expansion | |
| Temperature | Thermal Expansion x10-6/K |
| 20 ºC- 400ºC | 15 |
| 5)Specific heat capacity | |
| Temperature | 20ºC |
| J/gK | 0.41 |
| Melting point (ºC) | 1280 |
| Max continuous operating temperature in air (ºC) | 400 |
| Magnetic properties | non-magnetic |
6)Corrosion resistance performance
| Alloys | Working In atmosphere at 20ºC | Working at max temperature 200ºC | |||||
| Air and oxygen contain gases |
gases with Nitrogen | gases with sulfur oxidability |
gases with sulfur reductibility |
carburization | |||
| CuNi44 | good | bad | bad | bad | bad | good | |
7)Style of supply
| Alloys Name | Type | Dimension | ||
| OhmAlloy49W | Wire | D=0.06mm~8mm | ||
| OhmAlloy49R | Ribbon | W=0.4~40 | T=0.05~2.9mm | |
| OhmAlloy49S | Strip | W=8~200mm | T=0.1~3.0 | |
| OhmAlloy49F | Foil | W=6~120mm | T=0.005~0.1 | |
| OhmAlloy49B | Bar | Dia=8~100mm | L=50~1000 | |
2.Production Procedure
3.Package Reference
4.Products and Services
1). Pass: ISO9001 certification, and SO14001cetification;
2). Fine after-sale services;
3). Small order accepted;
4). Stable properties in high temperature;
5). Fast delivery;
5.Question and Answer
Q1:How can I contact with your company?
A1:We have multiple communication channels : Tel/Whatsapp/Wechat:+86-15826530281 QQ:3199874404(SPARROW)
Q2:Do you provide free samples?
A2:Yes,we can provide free samples for your testing,but buyer should bear the shipping costs.
Q3:What is your payment terms?
A3:30% in advance,balance after receiving the copy of B/L. T/T,L/C,,Paypal is OK.
Q4:What is your lead time?
A4:On normal condition,the lead time is 7 days after the payment. Special order or quantity is subject to the negotiation.
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