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Alloy 40NKM

Designation

Name The value
Designation GOST Cyrillic 40НКМ
Designation GOST Latin 40HKM
Transliteration 40NKM
The chemical elements 40NiCoCu

Description

Alloy 40NKM used: for the manufacture of cores of the coil constant inductance, chokes filters, wideband transformers.

Note

The alloy has anisotropic magnetic properties, low residual magnetic induction and constancy of magnetic permeability and saturation induction of at least 1.2−1.5 T
From 01.01.1991 alloy is not allowed to use in the newly created and upgraded technology.

Standards

Name Code Standards
Classification, nomenclature and general norms В30 GOST 10160-75, GOST 10994-74
Sectional and shaped rolling В32 TU 14-11-245-88

Chemical composition

Standard C S P Mn Si Ni Fe Mo Co
GOST 10994-74 ≤0.03 ≤0.02 ≤0.02 0.3-0.6 ≤0.3 39.3-40.7 The rest 3.8-4.2 24.5-26
Fe is the basis.

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