BrO19

for valves and fittings casts of responsible appointment

Classification

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

Chemical composition

Standard	Si, %	Sn, %	Bi, %	Cu, %	Zn, %	Sb, %	Al, %	Pb, %	P, %
Standard	Si, %	Sn, %	Bi, %	Cu, %	Zn, %	Sb, %	Al, %	Pb, %	P, %
GOST 613-79	< 0.02	18–19.5	< 0.02	79.3–82	< 0.2	< 0.3	< 0.02	< 0.5	< 0.1

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Physical characteristics

Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\rho$ , $\frac{kg}{m^3}$
Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\rho$ , $\frac{kg}{m^3}$
20	96	18.8	8600

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	Treatment
Casting				in chill mold	295	175	41

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Casting		in chill mold	157

Casting and technological parameters

melting point, °C
melting point, °C
880

Coefficients of Friction

coefficient of friction with lubrication	coefficient of friction without lubrication
coefficient of friction with lubrication	coefficient of friction without lubrication
0.005	0.4

Standards

Standard	Description
Standard	Description
GOST 613-79
OST 1 90054-72

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Si	%	Silicon
Sn	%	Tin
Bi	%	Bismuth
Cu	%	Copper
Zn	%	Zinc
Sb	%	Antimony
Al	%	Aluminium
Pb	%	Lead
P	%	Phosphorus

Description of physical characteristics

Parameter	Units of measurement	Description
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)
$\rho$	$\frac{kg}{m^3}$	The density of the material

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\sigma_{P}$	$MPa$	Proportionality limit
$KCU\cdot 10^{3}$	$\frac{J}{m^2}$	Impact toughness

Description of the casting and technological parameters

Parameter	Units of measurement	Description
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