AL9-1 (AK7pch)

For the manufacture of shaped castings; The alloy has a high tightness.

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Aluminum, aluminum alloys	Foundry aluminum alloys

Chemical composition

Standard	Fe, %	Si, %	B, %	Be, %	Sn, %	Mg, %	Mn, %	Ti, %	Cu, %	Zn, %	Zr, %	Al, %	Pb, %
Standard	Fe, %	Si, %	B, %	Be, %	Sn, %	Mg, %	Mn, %	Ti, %	Cu, %	Zn, %	Zr, %	Al, %	Pb, %
GOST 1583-93	< 0.3	7–8	< 0.1	< 0.1	< 0.005	0.25–0.4	< 0.1	0.08–0.15	< 0.1	< 0.2	< 0.1	90.85–92.67	< 0.03

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Physical characteristics

Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	$c\cdot 10^{-3}$ , $\frac{J}{kg\cdot K}$	$R\cdot 10^{-6}$ , $\Omega\cdot m$
Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	$c\cdot 10^{-3}$ , $\frac{J}{kg\cdot K}$	$R\cdot 10^{-6}$ , $\Omega\cdot m$
20	0.7			2660		45.7
100		21.8	155		880

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\sigma_{0.5}$ , $MPa$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\sigma_{0.5}$ , $MPa$	Treatment
Casting				under pressure	210		2
Casting				in chill mold	300–320	240–250	5–6

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Casting		under pressure	55
Casting		in chill mold	70–75

Analogues

USA	CIS, Russia, Ukraine	Germany
USA	CIS, Russia, Ukraine	Germany
336	A356.0	G-AlSi7Mg

Standards

Standard	Description
Standard	Description
GOST 1583-93
GOST 2685-75
GOST Р 55375-2012
DSTU 2839-94

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Be	%	Beryllium
Sn	%	Tin
Mg	%	Magnesium
Mn	%	Manganese
Ti	%	Titan
Cu	%	Copper
Zn	%	Zinc
Zr	%	Zirconium
Al	%	Aluminium
Pb	%	Lead

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)
$\varkappa$	$\frac{W}{m\cdot K}$	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)
$R\cdot 10^{-6}$	$\Omega\cdot m$	Electrical resistivity

Description of mechanical properties

Parameter	Units of measurement	Description
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