BrO5S25 (BrOS5-25)
sliding Bimetallic bearings
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Bronze |
Tin cast bronze |
Chemical composition
| Standard |
Fe, % |
Si, % |
Sn, % |
Cu, % |
Zn, % |
Sb, % |
Al, % |
Pb, % |
P, % |
|---|
| GOST 613-79 |
< 0.2 |
< 0.02 |
4–6 |
66.8–73 |
< 0.5 |
< 0.5 |
< 0.02 |
23–26 |
< 0.05 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$E\cdot 10^{9}$$, $$MPa$$ |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\varkappa$$, $$\frac{W}{m\cdot K}$$ |
|---|
| 20 |
68.6 |
17.6 |
58.6 |
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
| Casting |
GOST 613-79 |
|
|
in chill mold |
137 |
6 |
Without termoobrabot. |
| Casting |
GOST 613-79 |
|
|
in sandy form |
147 |
5 |
Without termoobrabot. |
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Casting |
GOST 613-79 |
in chill mold |
60 |
| Casting |
GOST 613-79 |
in sandy form |
45 |
Casting and technological parameters
| melting point, °C |
linear shrinkage, % |
the temperature of the casting, °C |
|---|
| 940 |
1.5 |
1150 |
Coefficients of Friction
| coefficient of friction with lubrication |
coefficient of friction without lubrication |
|---|
| 0.004 |
0.14 |
Analogues
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Sn |
% |
Tin |
| Cu |
% |
Copper |
| Zn |
% |
Zinc |
| Sb |
% |
Antimony |
| 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) |
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 |
| linear shrinkage |
% |
The difference between model dimensions and the model casting |
| the temperature of the casting |
°C |
The temperature of the molten polymer is extruded from the heating cylinder into the mold |