# BrO3Ts7S5N

for valves employed in sea water, water vapour

### Classification

Country Section Category
CIS, Russia, Ukraine Bronze Tin cast bronze

### Physical characteristics

Temperature, °C $E\cdot 10^{9}$, $MPa$ $\alpha\cdot 10^{6}$, $K^{-1}$ $\varkappa$, $\frac{W}{m\cdot K}$ $\rho$, $\frac{kg}{m^3}$ $c\cdot 10^{-3}$, $\frac{J}{kg\cdot K}$
20 0.84 62.8 8700
100 16.71 364.3

### Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $\sigma _{U}$, $MPa$ $\sigma_{Y}$, $MPa$ $\sigma_{0.5}$, $MPa$ Treatment
Casting in sandy form 175 8
Casting in sandy form 205 176 5

### Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy 59

### Casting and technological parameters

melting point, °C
1022

### Coefficients of Friction

coefficient of friction with lubrication coefficient of friction without lubrication
0.028 0.24

### Standards

Standard Description
GOST 613-79

### 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)

### Description of mechanical properties

Parameter Units of measurement Description
$\sigma_{Y}$ $MPa$ Yield strength
$\sigma_{0.5}$ $MPa$ Tensile stress required to produce a total elongation of 0.5%
$\sigma _{U}$ $MPa$ Ultimate tensile strength

### 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