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Alloy Mnmc40-1.5 (Constantan)

Designation

Name The value
Designation GOST Cyrillic МНМц40-1,5
Designation GOST Latin MHMts40-1,5
Transliteration MNMts40-15
The chemical elements CuNiMn40-1,5
Name The value
Designation GOST Cyrillic Константан
Designation GOST Latin Kohctahtah
Transliteration Konstantan
The chemical elements Coонстантан

Description

Alloy Mnmc40−1,5 is used: for the manufacture of wire strip designed for electrical use and manufacture of countervailing wires; cold-rolled tapes, used in industry as a material of high electrical resistance designed for operation at temperatures above +500 °C.

Standards

Name Code Standards
Non-ferrous metals, including rare metals, and their alloys В51 GOST 28873-90, GOST 492-2006
Tapes В54 GOST 5189-75, TU 48-21-213-88
Wire of non-ferrous metals and their alloys В74 OST 4Г 0.022.006-72, OST 88.0.022.204-74, TU 48-21-186-72

Chemical composition

Standard C S P Mn Si Fe Cu As Sb Pb Bi Mg Ni+Co
GOST 492-2006 ≤0.1 ≤0.02 ≤0.005 1-2 ≤0.1 ≤0.5 The rest ≤0.01 ≤0.002 ≤0.005 ≤0.002 ≤0.05 39-41
Cu is the basis.
According to GOST 492-2006, the total mass fraction of impurities is ≤ 0.90%. In the constant MNMc40-1.5, used in electronic engineering, the content of the mass fraction of zinc should be ≤ 0.030%.

Mechanical characteristics

Section, mm σB, MPa d Brinell hardness number, MPa
Of cold-rolled tape in the delivery state according to GOST 5189-75
390-590 - -
≥640 - -
Wire in the delivery state
380-480 25-30 75-90
620-720 2-3 ≥155

Description mechanical marks

Name Description
Section Section
σB Limit short-term strength
d Elongation after rupture

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) R, НОм · м
20 166 8900 21 450-510

A description of the physical symbols

Name Description
Е The normal elasticity modulus
l Coefficient of thermal conductivity
С Specific heat

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