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Precision resistance alloys

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Constantan(6J40) refers to resistance alloy mainly composed of Copper&Nickel, which has quite low temperature coefficient of resistance, good machining property and corrosion resistance&easy brazing. Constantan(6J40) manufactured by our company has been widely applied in manufacturing resistor, shunt, precise or normal resistor element of all standards.
New Constantan(6J11) refers to resistance alloy mainly composed of Copper& Manganese, which has quite low temperature coefficient of resistance, quite wide Operating Temperature Range, good machining property and corrosion resistance&easy brazing. Constantan(6J11) manufactured by our company has been widely applied in manufacturing all kinds of resistor, shunt, and precise resistor element of variable resistor and strain resistor.
    Copper-manganese(6J8, 6J12, 6J13)is the resistance alloy mainly composed of copper, manganese and nickel, which has quite small low temperature coefficient of resistance. It has low thermal electromotive force of copper and good resistance stability. It is a quite excellent precise resistance material. Copper-manganese(6J8, 6J12,6J13)manufactured by our company have been mainly applied in producing standard resistor, shunt, precise or normal resistor element. 

List of alloys 
 
Precision resistance alloy wires: 6J40(Constantan), 6J11 New(Constantan), 6J12(Manganin), 6J8 F1(Manganin), 6J13 F2(Manganin)
 
Date Sheet 

Main characteristics of precision resistance alloy
 

Nomenclature Performance 6J40 Constantan 6J11 New Constantan 6J12 Manganin 6J8 F1 Manganin 6J13 F2 Manganin
Main Chemical Composition (%) Mn 1~2 10.5~12.5 11~13 8~10 11~13
Ni 39~41 - 2~3 - 2~5
Cu Bal. Bal. Bal. Bal. Bal.
other
Al:2.5~4.5
Fe:1.0~1.6

Si:1~2
Continuous service temperature of element(℃) 5~500 5~500 5~45 10~80 10~80
Density(g/cm3) 8.88 8.0 8.44 8.7 8.4
Resistivity at 20℃(μΩ.m) 0.48±0.03 0.49±0.03 0.47±0.03 0.35±0.05 0.44±0.04
Elongation rate(%,Φ>0.5,L0=200mm) ≥15 ≥15 ≥15 ≥15 ≥15
TCR(α×106C-1) -40~+40 -80~+80 -3~+20 -5~+10 0~+40
μv /℃(0~100℃) EMF vs Copper 45 2 1 2 2

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Danyang Bosheng Alloys Material Factory Limited occupies over 12000 sq meters of manufacturing located in Dangyang city, Jiangsu provenience close to Hu-Ning expressway and railway, about 2hours ride to Shanghai. 

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