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.