BrOF4-0.25

The tubes used in instrument making and instrumentation

Classification

Country Section Category
CIS, Russia, Ukraine Bronze Pressure Tin Bronze

Chemical composition

Standard Fe, % Si, % Sn, % Bi, % Cu, % Zn, % Ni, % Sb, % Al, % Pb, % P, %
GOST 5017-2006 < 0.02 < 0.002 3.5–4 < 0.002 95.25–96.2 < 0.3 < 0.2 < 0.002 < 0.002 < 0.02 0.2–0.3

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 100 84 8830 0.09
100 17.6

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Alloy soft 300–380 40–58
Alloy solid 500–700 6–10

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy soft 550–700
Alloy solid 1600–1700

Casting and technological parameters

melting point, °C Hot working temperature, °C annealing temperature, °C
1060 700–800 600–650

Analogues

Germany USA
2.1016 C51100

Standards

Standard Description
GOST 5017-2006 Wrought tin bronzes. Grades

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Sn % Tin
Bi % Bismuth
Cu % Copper
Zn % Zinc
Ni % Nickel
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)
$$\rho$$ $$\frac{kg}{m^3}$$ 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