JLC Mang series is of copper-nickel alloys that are used for electrical and controlled resistance applications. These alloys have very low temperature coefficient of resistance, and offer uniform electrical resistance over long periods of time. Additionally, they have very low thermal electromotive force (EMF) against copper. These alloys have good workability, can be soldered, as well as welded.
In addition to the two grades listed below, other variants of copper-nickel alloys are also available. Please contact JLC for more details.
| Alloy | British Standard | Werkstoff Nr | UNS designation |
|---|---|---|---|
| JLC Mang 38 | - | - | - |
| JLC Mang 43 | - | 2.1362 | - |
| Alloy | Ni | Mn | Cu |
|---|---|---|---|
| JLC Mang 38 | 2 - 4 | 10 - 12 | Balance |
| JLC Mang 43 | 2 - 4 | 11 - 13 | Balance |
| Alloy | Density | Specific Resistance (Electrical Resistivity) |
Thermal Linear Expansion Coeff. between 20-1000 °C |
Temp. Coeff. of Resistance |
Thermal EMF against Copper at 20°C |
|---|---|---|---|---|---|
| g/cm³ | µΩ-cm | 10-6/°C | x 10-6/°C | µV/K | |
| JLC Mang 38 | 8.40 | 38.5 | 18 | ±15 (Range 40-60 °C) | |
| JLC Mang 43 | 8.41 | 43.0 | 18 | ±15 (Range 15-35 °C) | Standard: -1.00; Special ±0.20 |
| Alloy | Tensile strength N/mm² |
Elongation % at L0=100 mm |
||
|---|---|---|---|---|
| Min | Max | Min | Max | |
| JLC Mang 38 | 350 | 450 | 15 | 30 |
| JLC Mang 43 | 350 | 450 | 15 | 30 |
| Form | Dia | Width | Thickness |
|---|---|---|---|
| mm | mm | mm | |
| Wire | 12.0 - 0.15 | - | - |
| Strip | - | 0.4 - 80 | ≥ 0.10 |
Applications
These alloys are used for manufacturing resistance standards, precision electrical measurement instruments such as potentiometers, and are standard materials for precision, standard, and shunt resistors. Due to their low EMF against copper, they are used in electrical circuits where an erratic thermal EMF can lead to malfunctioning of the circuit.
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