E⋅109
MPa
ρ
kgm3
R⋅10−6
Ω⋅m
σU
MPa
ϵL

38NKD (38NKD-VI)

For vacuum tight junctions with glass, sapphire.

for vacuum junctions with glass U-6, S72−4; 1000000 * TFLE at temperatures ranging from -60 to +400 ºC less than 7.0−7.8 [1 / ºC]

Classification

Country Section Category
CIS, Russia, Ukraine Precision alloys With given TCLE

Chemical composition

Standard Fe, % Si, % Mn, % Co, % Cu, % Ni, % P, % C, % S, %
GOST 10994-74 49.72–53.5 < 0.3 < 0.4 4.5–5.5 4.5–5.5 37.5–38.5 < 0.015 < 0.05 < 0.015

Information on suppliers

Physical characteristics

Temperature, °C E\cdot 10^{9}E⋅109, MPaMPa \rhoρ, \frac{kg}{m^3}kgm3 R\cdot 10^{-6}R⋅10−6, \Omega\cdot mΩ⋅m
20 150 8200 0.5

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}σU, MPaMPa \epsilon_LϵL, % Treatment
450–550 23 Annealing

Casting and technological parameters

melting point, °C
1450

Standards

Standard Description
GOST 10994-74

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Co % Cobalt
Cu % Copper
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur

Description of physical characteristics

Parameter Units of measurement Description
E\cdot 10^{9}E⋅109 MPaMPa Elastic modulus
\rhoρ \frac{kg}{m^3}kgm3 The density of the material
R\cdot 10^{-6}R⋅10−6 \Omega\cdot mΩ⋅m Electrical resistivity

Description of mechanical properties

Parameter Units of measurement Description
\sigma _{U}σU MPaMPa Ultimate tensile strength
\epsilon_LϵL % 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