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Constantan

Constantan

константант

The company “Atomsteel” offers to buy out stock availability constantan wire MNMts40-1,5. Constantan has a high thermoelectric power, low temperature coefficient of electrical resistance and persistence. It is sufficiently resistant against corrosion, heat resistant, has good mechanical properties and good pressure treated. Constantan used in the manufacture of resistors, thermocouples, heating appliances with an operating temperature up to 500 ˚ C.

The chemical composition of the constant МНМц40-1,5

Alloy grade

Main components,%

Impurities,%, no more than

Mn

Ni+Co

Cu

Fe

Si

Mg

Pb

МНМц40-1,5

1,00

39,00-41,00

Ост.

0,50

0,10

0,05

0,005

Alloy grade

Main components,% no more

application

МНМц40-1,5

S

C

P

Bi

As

Sb

всего

Tapes and wires for electrical purposes and compensating cables

Mechanical and physical properties constantan МНМц40-1,5

The melting temperature, ˚ C …………………………………………………… 1260

Density, g / cm3 …………………………………………………… .. ………… … 8.9

The linear expansion coefficient α × 106 ……………………………… 14.4

Heat capacity, cal / (g · ˚ C) ……………………………………… .. ……… .. … ..0,0977

Thermal conductivity cal / (cm · s · ˚ C) ……………………………………. …… ..0,05

The electrical resistivity, ohm mm2 / m ……………………………… .0,48

The temperature coefficient of electrical resistivity at

20-100 ˚ C × 105 ………………………………………. ……… … ………………… .2,0

Electric potential, mV ……………………………………………… .0,35

Modulus of elasticity E, kgf / mm2 …. …………………………… 16600

Tensile strength δv, kgf / mm2:

Soft …………………………………………………………………. ……… ..40-50

solid (hardening 80%) ………………………………………………………… ..70-85

Elongation δ,%:

soft ……………………. …………………………………………… … ……… .30

solid …………………………………………………………………. ……… .2-4

Reduction,%:

Cast ……………………………………………………………………………… 26

Soft …………………………………………………………………………… .71

The limit of proportionality soft alloy δpts, kgf / mm2 ……………… 8.7

Fatigue limit of hot-rolled bars at variable

Bending stress δ-1 kgf / mm2 … …………………………………… 24.3

The toughness of the cast alloy en kgf · m / cm2 ……………………………… 8.7

Hardness HB kgf / mm2:

Cast ……………………………………………………………………. ……… … 68

Soft ………………………………………………………………………… … 75-90

solid ………………………………………………………………………… ..155