BrAZh9-4
Gears, bushings, valve seats in the aircraft industry, in mechanical engineering castings massive parts in the ground
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Bronze |
Pressureless bronze plated |
Chemical composition
| Standard |
Fe, % |
Si, % |
Sn, % |
Mn, % |
Cu, % |
Zn, % |
Al, % |
Pb, % |
P, % |
|---|
| GOST 18175-78 |
2–4 |
< 0.1 |
< 0.1 |
< 0.5 |
84.3–90 |
< 1 |
8–10 |
< 0.01 |
< 0.01 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$E\cdot 10^{9}$$, $$MPa$$ |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\varkappa$$, $$\frac{W}{m\cdot K}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
$$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ |
$$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|
| 20 |
116 |
|
58 |
7500 |
|
0.12 |
| 100 |
|
16.2 |
|
|
0.423 |
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
| Round |
|
|
|
compacting |
540 |
15 |
|
| Alloy |
|
|
|
soft |
400–500 |
35–45 |
|
| Alloy |
|
|
|
solid |
500–700 |
4–6 |
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Round |
|
compacting |
110–180 |
| Alloy |
|
soft |
100–120 |
| Alloy |
|
solid |
160–200 |
Casting and technological parameters
Coefficients of Friction
| coefficient of friction with lubrication |
coefficient of friction without lubrication |
|---|
| 0.004 |
0.18 |
Analogues
| USA |
Germany |
|---|
| C61900 |
CuAl9Fe3Mn2 |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Sn |
% |
Tin |
| Mn |
% |
Manganese |
| Cu |
% |
Copper |
| Zn |
% |
Zinc |
| Al |
% |
Aluminium |
| Pb |
% |
Lead |
| P |
% |
Phosphorus |
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) |
| $$\varkappa$$ |
$$\frac{W}{m\cdot K}$$ |
Coefficient of thermal conductivity (the heat capacity of the material) |
| $$\rho$$ |
$$\frac{kg}{m^3}$$ |
The density of the material |
| $$c\cdot 10^{-3}$$ |
$$\frac{J}{kg\cdot K}$$ |
The specific heat of the material (range 20°C–T) |
| $$R\cdot 10^{-6}$$ |
$$\Omega\cdot m$$ |
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 |