Iron-Nickel Alloy 42НХТЮА

  • Chemical composition
    Al Aluminum 0.6 — 1.0
    Fe Iron Rest
    Si Silicon 0.4 — 0.7
    Mn Manganese 0.3 — 0.6
    Ni Nickel 41.5 — 43.5
    S Sulfur <0.02
    Ti Titanium 2.3 — 2.9
    C Carbon <0.05
    P Phosphorus <0.02
    Cr Chromium 5.0 — 5.6
    Domestic analogues

  • N41XT

    H41XTA

    42NHTYU (included in 4 standards)

  • Analogs in the USA
  • 902

    NI-SPAN C-902

    5223 D AMS

    5225 D AMS

    5221 D AMS

    5223 E AMS

    5221 AMS

    5223 AMS

    5225 AMS

    NI-SPAN alloy C-902 Special Metals

    N09902 UNS

    K70640 UNS

for hair spirals of clockwork. Technical requirements: GOST 10994−74

Classification

Country Section Category
CIS, Russia, Ukraine Precision alloys With preset elastic properties

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ti, % Ni, % Al, % P, % C, % S, %
GOST 10994-74 45.61–49.9 0.4–0.7 0.3–0.6 5–5.6 2.3–2.9 41.5–43.5 0.6–1 < 0.02 < 0.05 < 0.02

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$
20 179 9

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
1300–1400 5 Tempering 910 ° C, 700 ° C Aging
Wire GOST 10994-74 1080–1375

Standards

Standard Description
GOST 10994-74

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ti % Titan
Ni % Nickel
Al % Aluminium
P % Phosphorus
C % Carbon
S % Sulfur

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_L$$ % Elongation at break (longitudinal)