Cr20Ni80
for the manufacture of critical parts in-vacuum devices, electronic connectors technology products, for resistors nepretsizionnyh
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Precision alloys |
With high electrical resistance |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Ti, % |
Ni, % |
Al, % |
P, % |
C, % |
S, % |
|---|
| GOST 10994-74 |
< 1.5 |
0.9–1.5 |
< 0.7 |
20–23 |
< 0.3 |
72.65–79.1 |
< 0.2 |
< 0.03 |
< 0.1 |
< 0.02 |
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 |
218 |
17.6 |
8400 |
1.175 |
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
| Wire |
|
|
|
solid |
620–680 |
|
|
| Alloy |
|
|
|
soft |
400 |
50 |
|
| Alloy |
|
|
|
solid |
770 |
14.5 |
|
Casting and technological parameters
| melting point, °C |
Hot working temperature, °C |
annealing temperature, °C |
|---|
| 1400 |
1250–100 |
870–1040 |
Analogues
| Germany |
USA |
|---|
| CHRONITHERM 80 SPEZIAL |
Nichrome V |
Standards
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) |
| $$\rho$$ |
$$\frac{kg}{m^3}$$ |
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 |