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Characteristics for grade АL7-4 ( АЛ7-4 )

Grade :	АL7-4 ( АЛ7-4 )
Classification :	Aluminium casting alloys
Equivalent grades:	Is absent

Chemical composition in % for grade АL7-4 ( АЛ7-4 )

Si	Al	Cu
6.7 - 7.3	88.5 - 89.5	3.8 - 4.2

Comment: Al is a basis; the percentage of Al is given approximately.

Mechanical properties under Т=20^oС for grade АL7-4 ( АЛ7-4 )

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
			274.4		4

Specification :

Mechanical properties :
s_в	- Tensile strength , [MPa]
s_T	- Yield stress, [MPa]
d₅	- Specific elongation at fracture , [ % ]
y	- Reduction of area , [ % ]
KCU	- Impact strength , [ kJ / m²]
HB	- Brinell hardness , [MPa]

Physical properties :
T	- Test temperature , [Grade]
E	- Young modulus , [MPa]
a	- Coefficient of linear expansion (range 20^o - T ) , [1/Grade]
l	- Termal (heat) condition coefficient , [Watt/(m·Grade)]
r	- Density , [kg/m³]
C	- Specific heat ( range 20^o - T ), [J/(kg·Grade)]
R	- Electrical resistance , [Ohm·m]

АL7-4 ( АЛ7-4 ) - Aluminium casting alloys: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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