METAL WIRE M25 ALLOY (Cu81Ni19)

METAL WIRE M25 ALLOY (Cu81Ni19)

METAL WIRE M25 ALLOY (Cu81Ni19)

Analogue: CuNi19, NC25

The М25 alloy is a copper-nickel alloy (Cu81Ni19 alloy) with low resistivity in use at temperatures up to 300 ° С.

Alloy M25 is a low-voltage heating alloy. This is one of the main materials of low-voltage electrical products. It is widely used in low-voltage circuit breakers, electrical blankets, thermal overload relays and other low-voltage electrical products.

M25 alloy is commonly used in heating cables.

Chemical composition %

Ni

19

Mn

0.5

Cu

Stop

Mechanical properties (1.0mm)

Yield strength

Tensile strength

Elongation

MPa

MPa

%

155

340

25

physical properties

Density (g / cm3)

8.9

Electrical resistance at 20 ° C, Ohm * m

250

Temperature coefficient of resistivity

(20 ℃ ~ 600) X10-5/ ℃

<25

I

Heat conductivity coefficient 20 ℃ (WmK)

38

EMF with Copper (μV / ℃) (0 ~ 100)

.

Thermal expansion coefficient

Temperature

Thermal Expansion * 10-6/K

20 - 400 ℃

17.5

Specific heat

Temperature

20 ℃

J / gk

0.380

Melting point (℃)

1135

Maximum continuous working air temperature (℃)

300

Magnetic property

nonmagnetic

Types of goods

Name

Product type

dimensions

M25W

Wire

D = 0.03mm ~ 8mm

M25R

Strip

W = 0.4 ~ 40mm

W = 0.4 ~ 40mm

M25S

Tape

W = 8 ~ 200mm

W = 8 ~ 200mm

M25F

Foil

W = 6 ~ 120mm

W = 6 ~ 120mm

M25B

Bar

D = 8 ~ 100mm

D = 8 ~ 100mm

I