Database of Steel and Alloy (Marochnik)

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Metals -> Aluminium alloy -> Aluminium casting alloys

Characteristics of the material L7   ( 7 ).

Material : L7   ( 7 )
Classification : Aluminium casting alloys


Chemical composition in % of the material L7   ( 7 ) .
Fe Si Mn TiAl Cu Zr Pb Mg Zn Sn Impurity
max   1max   1.2max   0.1max   0.292.9 - 964 - 5max   0.1max   0.01max   0.03max   0.2max   0.01 all 2.1
Comment: Al is a basis; the percentage of Al is given approximately.


Mechanical properties under =20o of the material L7   ( 7 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
      200-230  3-6   
sand (mould) casting     260 200 3   Hardening and ageing


    Brinell hardness of the material   L7   ( 7 )   ,       HB 10 -1= 60 - 70   MPa
    Brinell hardness of the material   L7   ( 7 )   (quenching, ageing ,     sand (mould) casting HB 10 -1= 85   MPa


Physical properties of the material L7   ( 7 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(mGrade) kg/m3 J/(kgGrade) Ohmm
20     138.6 2800    
100   23        


Technological properties of the material L7   ( 7 ) .
 Linear shrinkage, % : 1.4



Specification :
Mechanical properties :
s - Tensile strength , [MPa]
sT - 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 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(mGrade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kgGrade)]
R - Electrical resistance , [Ohmm]

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
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