Copper Mn Alloy 6J12

Hangzhou Ualloy Material Co.,Ltd is one of the best copper mn alloy 6j12 manufacturers and suppliers in China,Website:http://www.alloystrip.com, welcome to buy discount and low price normal manganin, normal manganin 47, cumn12ni2, 6j12 from us, and also welcome to check the price and quotation with our factory. OHMALLOY Normal Manganin 47(Precision Resistance Alloy)(Common Name:Normal Manganin,Normal Manganin 47,CuMn12Ni2，6J12 ) Normal Manganina 47 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. Normal Manganina 47 is typically used for the manufacturing of resistance standards, precision wire wound resistors, potentiometers, shunts and other electrical and electronic components. Normal Manganin 47 widely used for precision resistors with the highest requirements, the resistors should be carefully stabilised and the application temperature should not exceed +60 °C. Exceeding the maximum working temperature in air may result in a resistance drift generated by oxidizing. Thus, the long-term stability can be affected negatively.  As a result, the resistivity as well as the temperature coefficient of the electric resistance may slightly change. It is also used as low cost replacement material for silver solder for hard metal mounting.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 . Normal composition% Nickel 2~3 Manganese 11~13 Copper Bal. Typical Mechanical properties（1.0mm） Yield strength Tensile Strength Elongation Mpa Mpa % 180 390 15 Typical Physical properties Density (g/cm3) 8.44 Electrical resistivity at 20℃ (Ωmm2/m) 0.47 Temperature factor of resistivity（20℃~600℃）X10-5/℃ -3~20 Conductivity coefficient at 20℃ (WmK) 40 EMF vs Cu(μV/℃ )(0~100℃ ) 1 Coefficient of thermal expansion Temperature Thermal Expansion x10-6/K 20 ℃- 400℃ 18 Specific heat capacity Temperature 20℃ J/gK 0.41 Melting point (℃) 960 Element working temperature in air (℃) 5~45 Magnetic properties non-magnetic Corrosion resistance performance Alloys Working In atmosphere at 20℃ Working at max temperature 200℃ Air and oxygen contain gases gases with Nitrogen gases with sulfur oxidability gases with sulfur reductibility carburization Manganin 47 good good good good bad good Style of supply Alloys Name Type Dimension Manganin 47W Wire D=0.03mm~8mm Manganin 47R Ribbon W=0.4~40 T=0.03~2.9mm Manganin 47S Strip W=8~200mm T=0.1~3.0 Manganin 47F Foil W=6~120mm T=0.003~0.1 Manganin 47B Bar Dia=8~100mm L=50~1000