METAL WIRE M3 ALLOY (Cu99Ni1)
Analog: CuNi1, Alloy3, HAI3, NC3
The M3 alloy is a copper-nickel alloy (Cu99Ni1 alloy) with low resistivity and use at temperatures up to 200 ° C.
Alloy M3 has a low resistance (heating) alloy. The material is widely used in electrical appliances. It is used in circuit breakers, heating cables, thermal overload relays and other low voltage electrical appliances.
Chemical composition %
Ni | 1 | Mn | - |
Cu | Bal. |
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|
Mechanical properties （1.0mm）
Yield strength | Tensile strength | Elongation |
MPa | MPa | % |
90 | 210 | 25 |
physical properties
Density (g / cm3) 8.9
Resistivity at 20 ℃ (µOhm * m) 0.03
Temperature coefficient of resistivity （20 ℃ ~ 600） X10-5 / <100
Heat conductivity coefficient 20 ℃ (WmK) 145
EMF with Copper (μV / ℃) (0 ~ 100) -8
Thermal expansion coefficient
Temperature Thermal expansionx10-6 / K
20 ℃--400℃ 17.5
Specific heat
Temperature 20℃
J / gk 0.380
Melting point (℃) 1085
Maximum continuous working air temperature (℃) 200
Magnetic property nonmagnetic
Corrosion Resistance Characteristics
Alloy |
Service in the atmosphere with 20 ℃ | Service at max. 200 ℃ | ||||
Air and oxygen contain of gases | Gases with nitrogen | Gases with gray oxidability | sulfur-containing gases reduced | Cementation | ||
M3 alloy | good | poorly | poorly | poorly | poorly | good |
Types of goods
Names | Types | dimensions |
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Alloy M3W | Wire | D = 0.03mm ~ 8mm |
|
Alloy M3R | Strip | W = 0.4 ~ 40mm | W = 0.4 ~ 40mm |
Alloy M3S | Tape | W = 8 ~ 200mm | W = 8 ~ 200mm |
Alloy M3F | Foil | W = 6 ~ 120mm | W = 6 ~ 120mm |
Alloy M3B | Bar | D = 8 ~ 100mm | D = 8 ~ 100mm |