Constantan is a type of resistance alloy, which is made up of copper and nickel as the maim components. It has a low temperature coefficient of resistance(TCR),and a wide operating temperature range(below 500).It has good properties on mechanical working ,high resistance of corrosion.
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6J40
DETAIL
Constantan is a type of resistance alloy, which is made up of copper and nickel as the maim components. It has a low temperature coefficient of resistance(TCR),and a wide operating temperature range(below 500).It has good properties on mechanical working ,high resistance of corrosion.
It is used for variable and strain resistance elements in alternative instruments.
Manganin is a Copper-manganese-nickel Resistance alloy: It combines all the properties required of a precision electrical resistance alloy such as high resistivity, low temperature coefficient of resistance, very low thermal effect against copper and good performance of electrical resistance over long periods of time.
MAIN TECHNICAL CHARACTERISTICS OF CONSTANTAN AND MANGANIN ALLOY
|
Grade |
CONSTANTAN |
6J12 MANGANIN |
6J8 MANGANIN |
6J13 MANGANIN |
|
|
6J40 |
6J12 |
6J8 |
6J13 |
||
|
Main chemical composition |
Mn | 1~2 | 11~13 | 8~10 | 11~13 |
|
Ni |
39~41 |
2~3 |
- |
2~5 |
|
|
Cu |
余量Bal |
余量Bal |
余量Bal |
余量Bal |
|
|
Max Working Temperature |
5~500 |
5~45 |
10~80 |
10~81 |
|
|
Density |
8.88 |
8.44 |
8.70 |
8.40 |
|
|
Resistivity |
0.48±3% |
0.47±3% |
0.35±5% |
0.44±4% |
|
|
Elongation |
≥15 |
≥15 |
≥15 |
≥15 |
|
|
Resistance Temperature Coefficient |
-40~+40 |
-3~+20 |
-5~+10 |
0~+40 |
|
|
Thermo EMF |
45 |
1 |
2 |
2 |
|