NH9 (Chromel K)

wire for compensatory wires

Classification

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

Chemical composition

Standard Fe, % Si, % Mg, % Bi, % Mn, % Co, % Cr, % Cu, % Sb, % Al, % Pb, % As, % P, % C, % S, % Ni + Co, %
GOST 492-2006 < 0.3 < 0.4 < 0.05 < 0.002 < 0.3 0.4–1.2 8.5–10 < 0.25 < 0.002 < 0.15 < 0.002 < 0.002 < 0.003 < 0.2 < 0.01 87.4–91.1

Information on suppliers

Physical characteristics

Temperature, °C $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\rho$$, $$\frac{kg}{m^3}$$
20 12.8 8700

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Alloy soft 600–700 34–45
Alloy solid 1100 3

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy soft 150–200
Alloy solid 300

Casting and technological parameters

melting point, °C the temperature of the casting, °C annealing temperature, °C
1435 1550 800–850

Standards

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mg % Magnesium
Bi % Bismuth
Mn % Manganese
Co % Cobalt
Cr % Chrome
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
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

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
the temperature of the casting °C The temperature of the molten polymer is extruded from the heating cylinder into the mold
annealing temperature °C The temperature at which the processes return recrystallization and homogenization of the metal to reduce its hardness for subsequent machining