NMtsAK2-2-1 (Alumel)

Thermocouple wire

Classification

Country Section Category
CIS, Russia, Ukraine Nickel, nickel alloys Nickel alloys

Chemical composition

Standard Fe, % Si, % Mg, % Bi, % Mn, % Co, % Cu, % Sb, % Al, % Pb, % As, % P, % C, % S, % Ni + Co, %
GOST 492-2006 < 0.3 0.85–1.5 < 0.05 < 0.002 1.8–2.7 0.6–1.2 < 0.25 < 0.002 1.6–2.4 < 0.002 < 0.002 < 0.005 < 0.1 < 0.01 91.5–95.15

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 182 8500 0.32
100 13.5

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Alloy soft 500–600
Alloy solid 1000–1100 3.5

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy soft 0–0
Alloy solid 250–300

Casting and technological parameters

melting point, °C Hot working temperature, °C annealing temperature, °C
1440 1250–1000 900–950

Analogues

Germany
2.4122
2.4122 (NiMn3Al)

Standards

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mg % Magnesium
Bi % Bismuth
Mn % Manganese
Co % Cobalt
Cu % Copper
Sb % Antimony
Al % Aluminium
Pb % Lead
As % Arsenic
P % Phosphorus
C % Carbon
S % Sulfur
Ni + Co % Nickel + Cobalt

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)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ Electrical resistivity

Description of mechanical properties

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

Description of the casting and technological parameters

Parameter Units of measurement Description
melting point °C The temperature at which solid crystalline body makes the transition to the liquid state and Vice versa
Hot working temperature °C The temperature at which the plastic-deformed metal recrystallizes during the pressure treatment
annealing temperature °C The temperature at which the processes return recrystallization and homogenization of the metal to reduce its hardness for subsequent machining