BrBNT1.7
for springs and elastic elements; high strength and wear resistance, good sliding properties, very good formability in hardened condition
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Bronze |
Pressureless bronze plated |
Chemical composition
| Standard |
Fe, % |
Si, % |
Be, % |
Ti, % |
Cu, % |
Ni, % |
Al, % |
Pb, % |
|---|
| GOST 18175-78 |
< 0.15 |
< 0.15 |
1.6–1.85 |
0.1–0.25 |
97–98.1 |
0.2–0.4 |
< 0.15 |
< 0.005 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$E\cdot 10^{9}$$, $$MPa$$ |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
$$\varkappa$$, $$\frac{W}{m\cdot K}$$ |
$$\rho$$, $$\frac{kg}{m^3}$$ |
$$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|
| 20 |
128 |
|
96.6 |
8200 |
0.09 |
| 100 |
|
17 |
|
|
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{P}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
| Tape |
|
|
|
solid |
590–930 |
|
2.5 |
|
| Alloy |
|
|
|
soft |
400–500 |
|
|
|
| Alloy |
|
|
|
solid |
600–900 |
529–830 |
|
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Alloy |
|
soft |
80–120 |
| Alloy |
|
solid |
150–240 |
Casting and technological parameters
| melting point, °C |
Hot working temperature, °C |
|---|
| 865 |
650–700 |
Analogues
| Germany |
USA |
|---|
| CuBe1.7 |
Alloy 165 |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Be |
% |
Beryllium |
| Ti |
% |
Titan |
| Cu |
% |
Copper |
| Ni |
% |
Nickel |
| Al |
% |
Aluminium |
| Pb |
% |
Lead |
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 |
| $$R\cdot 10^{-6}$$ |
$$\Omega\cdot m$$ |
Electrical resistivity |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\sigma_{P}$$ |
$$MPa$$ |
Proportionality limit |
| $$\epsilon_L$$ |
% |
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 |