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Manganin Wire

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Manganin Wire 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.

Chemical composition

Grade Main chemical compositions%
Cu Mn Ni Si

Manganin 47

Rest 11-13 2-3 -

Manganin 35

Rest 8-10 - 1-2

Manganin 44

Rest 11-13 2-5 -

Konstantan

Rest 1-2 39-41 -

 

Volume Resistivity Wires 、Sheets and Ribbons

Grade Volume Resistivity,
Manganin 47 0.47±0.03
Manganin 35 0.35±0.05
Manganin 44 0.44±0.03
Konstantan 0.48±0.03

 

Average resistance -Temperature coefficient of Manganin

Code Applicable Temperature Test Temperature ℃ Resistance-Temperature coefficient Average resistance-temperature coefficient
      αx10-6C-1 βx10-6C-2 αx10-6C-1

Manganin 47

Level 1

65-45

10、20、40

-3~+5

-0.7~0

-

Level 2

-5~+10

Level 3

-10~+20

Manganin 35 Wire、Sheet

10-80

10、40、60

-5~+10

-0.25~0

-

Manganin 44 Wire、Sheet

10-80

0~+40

-0.7~0

-

Konstantan Wire、Sheet

0-50

20、50

-

-

-40~+40

 

Elongation rate:

Diameter

Elongation Rate(Lo=200mm),%

≤0.05

6

>0.05~0.10

8

>0.1~0.50

12

>0.50

15

Thermal EMF rate for copper

Grade

Temperature range Average thermal EMF rate for copper

Manganin 47

0~100

1

Manganin 35

0~100

2

Manganin 44

0~100

2

Konstantan

0~100

45

Note: Thermal EMF rate for copper is absolute value.

The Net weight per spool

Dia.(mm)

(g)

Dia.(mm)

(g)

0.02~0.025

5

>0.28~0.45

300

>0.025~0.03

10

>0.45~0.63

400

>0.03~0.04

15

>0.63~0.75

700

>0.04~0.06

30

>0.75~1.18

1200

>0.06~0.08

60

>1.18~2.50

2000

>0.08~0.15

80

>2.50

3000

>0.15~0.28

150

 

 

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