Precision Alloy 31NK

No foreign analogues

Used for soldering with soft glass C72−4, for bonding with ceramics and mica; TKLR * 1,000,000 in the temperature range from -70 to +450 ºC no more than 6 — 9 [1 / ºC]

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Co, % Ni, % ET, %
GOST 10994-74 47.21–49.8 0.1–0.3 0.1–0.4 19.5–20.5 30.5–31.5 < 0.09

Information on suppliers

Physical characteristics

Temperature, °C E\cdot 10^{9}, MPa \rho, \frac{kg}{m^3} R\cdot 10^{-6}, \Omega\cdot m
20 142 8200 430

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}, MPa \sigma_{Y}, MPa d5, % Treatment
Tape GOST 10994-74 60 Transverse 850–920 380–440 15–20

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Tape GOST 10994-74 200–220

Casting and technological parameters

melting point, °C
1450

Limit operating modes

Standard Температура, °C
GOST 10994-74 < 450

Standards

Standard Description
GOST 10994-74

Description of chemical elements

Element Units of measurement Description
ET % Total other items
Fe % Iron
Si % Silicon
Mn % Manganese
Co % Cobalt
Ni % Nickel

Description of physical characteristics

Parameter Units of measurement Description
E\cdot 10^{9} MPa Elastic modulus
\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
d5 % Elongation at break
\sigma_{Y} MPa Yield strength
\sigma _{U} MPa Ultimate tensile strength

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