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Alloy 24NKH

Designation

Name The value
Designation GOST Cyrillic 24НХ
Designation GOST Latin 24HX
Transliteration 24NH
The chemical elements 24NiCr

Description

24NKH alloy is usedas the active layer in the manufacture of thermostatic bimetallic, is used for making sensitive to the temperature change of the elements of control and measuring instruments and apparatus.
When using alloy grade 42N and the active layer of the alloy 24NKH made thermobimetals brand ТБ107/71 (ТБ1132), which is used for the manufacture of heat-sensitive elements of devices (relays, regulators, pulse sensors, fuses, etc.).
When using alloy grade 36N and the active layer of the alloy 24NKH made thermobimetals brand ТБ138/80 (ТБ1423), which is used for the manufacture of heat-sensitive elements of devices (relays, regulators, pulse sensors, fuses, etc.).
When using alloy grade 50N and the active layer of the alloy 24NKH made thermobimetals brand ТБ73/57 (ТБ0831), which is used for the manufacture of thermosensitive elements with a small amount of bending.

Note

Thermobimetals ТБ107/71 (ТБ1132) with the average response factor (16,0−19,0)·10-6 deg-1, with an average specific electrical resistance (0,68−0,74) Ohm·mm2/m.
Thermobimetals ТБ138/80 (ТБ1423) with high coefficient sensitivity (20−24)·10-6 deg-1, with a high specific electrical resistance (0,77−0,84) Ohm·mm2/m.
Thermobimetals brand ТБ73/57 (ТБ0831) with low coefficient sensitivity (10−13)·10-6 deg-1, with a low specific electrical resistance (0,55−0,60) Ohm·mm2/m.

Standards

Name Code Standards
Tapes В34 GOST 10533-86
Classification, nomenclature and general norms В30 GOST 10994-74
Sectional and shaped rolling В32 TU 14-1-3040-80, TU 14-11-245-88

Chemical composition

Standard C S P Mn Cr Si Ni Fe
GOST 10994-74 0.25-0.35 ≤0.02 ≤0.02 0.3-0.6 2-3 0.15-0.3 23-25 The rest
Fe is the basis.

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