Alloy 20NG

  • Alloy 19HX
  • Alloy 20NG
  • Alloy 24HX
  • Alloy 45NH
  • Alloy 46H
  • Alloy 75GND

    • Designation

    Name The value
    Designation GOST Cyrillic 20НГ
    Designation GOST Latin 20HG
    Transliteration 20NG
    By chemical elements 20NiGe

    Description

    Alloy 20NG 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 36N and the active layer of the alloy 20NG made thermobimetals brand ТБ148/79 (ТБ1523), which is used for the manufacture of heat-sensitive elements of devices (compensators, relay protection, etc.).
    When using alloy grade 46Н and the active layer of the alloy 20NG made thermobimetals brand ТБ95/62 (ТБ1031, ТБ68), which is used for the manufacture of heat-sensitive elements of devices (relays, fuses, etc.).

    Note

    Thermobimetals ТБ148/79 (ТБ1523) with high coefficient sensitivity (21−25)·10-6 deg-1, with a high specific electrical resistance (0,77−0,82) Ohm·mm2/m.
    Thermobimetals brand ТБ95/62 (ТБ1031, ТБ68) with the average response factor (15−18)·10-6 deg-1, with an average specific electrical resistance (0,60−0,66) Ohm·mm2/m.

    Standards

    Name Code Standards
    Tape В34 GOST 10533-86, TU 14-1-2250-77
    Classification, nomenclature and General rules В30 GOST 10994-74
    Bars and shapes В32 TU 14-11-245-88

    Chemical composition

    Standard C S P Mn Si Ni Fe
    GOST 10994-74 ≤0.05 ≤0.02 ≤0.02 5.5-6.5 0.15-0.3 19-21 Rest
    Fe is the basis.