Manganina 43 Resistance Heating Wire and Resistance Wire Datasheet

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MANGANINA 43 RESISTANCE HEATING WIRE AND RESISTANCE WIRE DATASHEET Manganina 43 is a copper-manganese-nickel alloy (CuMnNi alloy) for use at room temperature. The alloy is characterized by very low thermal electromotive force (emf) compared to copper. Manganina 43 is typically used for the manufacturing of resistance standards, precision wire wound resistors, potentiometers, shunts and other electrical and electronic components. The alloy's low emf vs. copper makes it ideal for use in electrical circuits, especially D.C., where a spurious thermal emf could cause malfunctioning of electronic equipment. Due to the low operating temperature, the temperature coefficient of resistance is controlled to be low over a range of 15 to 35°C (59 to 95°F) CHEMICAL COMPOSITION Ni % Mn % Cu % Nominal composition 4.0 11.0 Bal. MECHANICAL PROPERTIES Wire size Yield Strength Tensile Strength Elongation Hardness Ø Rp0.2 Rm A mm (in) MPa (ksi) MPa (ksi) % Hv 1.00 (0.04) 180 (26) 390 (57) 30 110 PHYSICAL PROPERTIES Density g/cm3 (lb/in3) 8.4 (0.303) Electrical resistivity at 20°C Ω mm2/m (Ω circ. mil/ft) 0.43 (259) Temperature coefficient of resistance (15 - 35 °C) (x 10-6/K) 0 ± 15 COEFFICIENT OF THERMAL EXPANSION Temperature °C (°F) Thermal Expansion x 10-6/K (10-6 /°F) 20 - 100 (68-212) 18 (10) THERMAL CONDUCTIVITY Datasheet updated 2/4/2021 1:31:17 PM (supersedes all previous editions) 1 MANGANINA 43 Temperature °C (°F) 20 (68) W m-1 K-1 (Btu h-1ft-1°F-1) 22 (12.7) SPECIFIC HEAT CAPACITY Temperature °C (°F) 20 (68) kJ kg-1 K-1 (Btu lb-1 °F-1) 0.410 (0.10) Melting point °C (°F) 1020 (1868) Max continuous operating temperature in air °C Room temperature Magnetic properties The material is non-magnetic Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for materials under the trademark Kanthal®. Datasheet updated 2/4/2021 1:31:17 PM (supersedes all previous editions) materials.sandvik/contact-us MATERIALS.SANDVIK.

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THERMO POWER of Kr IMPLANTED MANGANIN- Cu THERMOCOUPLE T
Solid State Physics ANNUAL REPORT 2005 THERMO POWER OF Kr IMPLANTED MANGANIN- Cu THERMOCOUPLE T. WilczyĔ ska, R. WiĞ niewski, K. Wieteska Institute of Atomic Energy Low electric thermo power of manganin (Cu- junctions were placed into small glass containers insu- Mn_Ni alloy) relative to the copper is an advantage of lated thermally from each other by polystyrene box. The manganin alloy. The aim of this investigation was to hot junction container had suitable electrical heater. check if electric thermo power remains low after im- Temperature of the junctions was measured with mer- plantation with Kr ions. The work described is part of cury micro thermometer or an additional constantan- wide projected concerned with studies on properties of copper thermocouple. manganin implanted with various heavy ions [1]. Our measurements revealed that implantation of The 10P m thick stripe samples of 1 × 75mm were manganin with Kr ions reduces its thermo power rela- implanted with Kr ions in Laboratory of Nuclear Reac- tive to copper by ~50%. Another result of our study is tion at Joint Institute for Nuclear Research, Dubna. A that thermo power of non implanted manganin relative moderation aluminum foil of 11P m thick and 3mm to Cu is a little lower than given in literature. width was used. According to modeling performed with To assess the origin of such significant decrease in TRIM code [2] implantation produced the enhanced thermo EMF after implantation the thermally forced deposition layer near the back side of sample (Fig. 1). electron diffusion in junctions, contact potential and After implantation the samples were annealed for 100h o phonon forced electron drag components of the Seebeck at 130 - 150 C.
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