 
      Product Details
Place of Origin: China
Brand Name: TANKII
Certification: ISO
Model Number: Constantan
Payment & Shipping Terms
Minimum Order Quantity: 20kg
Packaging Details: Strip/Wire/Ribbon diameter 0.005mm-1.0mm packing in spool, big than 1.50mm packing in coil
Payment Terms: Western Union, T/T, L/C
Supply Ability: 20,000kg/Week
| State: | Soft Annealled Or Hard | Sample Supply: | Small Sample Supply Is Available | Model Number:: | Constantan | Chemical Composition: | : Cu, Mn, Ni | Insulation Material: | : Bare | Application: | : Resistance | 
| State: | Soft Annealled Or Hard | 
| Sample Supply: | Small Sample Supply Is Available | 
| Model Number:: | Constantan | 
| Chemical Composition: | : Cu, Mn, Ni | 
| Insulation Material: | : Bare | 
| Application: | : Resistance | 
2. Product Description
Constantan is a copper-nickel alloy that contains specific minor amounts of additional elements to achieve precise values for the temperature coefficient of resistivity. Careful control of melting and conversion practices results in a very low level of pinholes at ultra-thin thicknesses. The alloy is used extensively for foil resistors and strain gauges.
Chemical Content, %
| Ni | Mn | Fe | Si | Cu | Other | ROHS Directive | |||
| Cd | Pb | Hg | Cr | ||||||
| 40 | 1.50% | - | - | Bal | - | ND | ND | ND | ND | 
Mechanical Properties
| Max Continuous Service Temp | 400℃ | 
| Resisivity at 20℃ | 0.48±3%ohm mm2/m | 
| Density | 8.9 g/cm3 | 
| Thermal Conductivity | -6(Max) | 
| Melting Point | 1280℃ | 
| Tensile Strength,N/mm2 Annealed,Soft | 340~535 Mpa | 
| Tensile Strength,N/mm3 Cold Rolled | 680~1070 Mpa | 
| Elongation(anneal) | 25%(Min) | 
| Elongation(cold rolled) | ≥Min)2%(Min) | 
| EMF vs Cu, μV/ºC (0~100ºC) | -43 | 
| Micrographic Structure | austenite | 
| Magnetic Property | Non | 
| TCR | -40~+40 | 
Constantan Tradenames:
Cuprothal, Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45,
Neutrology, Advance, CuNi 102, Cu-Ni 44, Konstantan
Resistance Alloy- Constantan Sizes / Temper Capabilities
1; Condition: Bright, Annealed, Soft 
2; Wire diameter 0.02mm-1.0mm packing in spool, big than 1.0mm packing in coil
3; Rod, Bar diameter 1mm-30mm 
4; Strip: Thickness 0.05mm-7mm, Width 1mm-280mm 

Resistance Series:
| Charact eristic | Resistivity ( 200C μΩ.m) | Max.working Temperature ( 0C) | Tensile Strength (Mpa) | Melting point (0C) | Density ( g/cm3) | TCR x10-6/ 0C (20~600 0C) | EMF vs Cu (μV/ 0C) (0~100 0C) | 
| Alloy Nomenc lature | |||||||
| NC003 (CuNi1) | 0.03 | 200 | 210 | 1085 | 8.9 | <100 | -8 | 
| NC005 (CuNi2) | 0.05 | 200 | 220 | 1090 | 8.9 | <120 | -12 | 
| NC010 (CuNi6) | 0.1 | 220 | 250 | 1095 | 8.9 | <60 | -18 | 
| NC012 (CuNi8) | 0.12 | 250 | 270 | 1097 | 8.9 | <57 | -22 | 
| NC015 (CuNi10) | 0.15 | 250 | 290 | 1100 | 8.9 | <50 | -25 | 
| NC020 (CuNi14) | 0.2 | 300 | 310 | 1115 | 8.9 | <30 | -28 | 
| NC025 (CuNi19) | 0.25 | 300 | 340 | 1135 | 8.9 | <25 | -32 | 
| NC030 (CuNi23) | 0.3 | 300 | 350 | 1150 | 8.9 | <16 | -34 | 
| NC035 (CuNi30) | 0.35 | 350 | 400 | 1170 | 8.9 | <10 | -37 | 
| NC040 (CuNi34) | 0.4 | 350 | 400 | 1180 | 8.9 | 0 | -39 | 
| NC050 (CuNi44) | 0.5 | 400 | 420 | 1200 | 8.9 | <-6 | -43 | 
