Aluminium alloys

Note: only one typical science note is linked from this example of a CES EduPack Level 1 datasheet.

Description

THE MATERIAL
Aluminum was once so rare and precious that the Emperor Napoleon III of France had a set of cutlery made from it that cost him more than silver. But that was 1860; today, nearly 150 years later, aluminum spoons are things you throw away—a testament to our ability to be both technically creative and wasteful. Aluminum, the first of the 'light alloys' (with magnesium and titanium), is the third most abundant metal in the earth's crust (after iron and silicon) but extracting it costs much energy. It has grown to be the second most important metal in the economy (steel comes first), and the mainstay of the aerospace industry.
COMPOSITION
Al + alloying elements, e.g. Mg, Mn, Cr, Cu, Zn, Zr, Li

Aluminum can formed both by casting and by deformation.
GENERAL PROPERTIES
Density
2500
-
2900
kg/m^3
Price
*1.46
-
1.6
USD/kg

MECHANICAL PROPERTIES

Young’s modulus

68

82

GPa

Yield strength (elastic limit)

30

500

MPa

Tensile strength

58

550

MPa

Elongation

1

44

%

Hardness—Vickers

12

150.5

HV

Fatigue strength at 10^7 cycles

21.6

157

MPa

Fracture toughness

22

35

MP a.m^1/2

 
THERMAL PROPERTIES

Melting point

474.9

679.9

°C

Maximum service temperature

120

210

°C

Thermal conductor or insulator?
Good conductor
 

Thermal conductivity

76

235

W/m.K

Specific heat capacity

857

990

J/kg.K

Thermal expansion coefficient

21

24

µstrain/°C

 
ELECTRICAL PROPERTIES

Electrical conductor or insulator?

Good conductor

 
OPTICAL PROPERTIES

Transparency

Opaque

 
Eco properties

Embodied energy, primary production

200

238

MJ/kg

CO2 footprint, primary production

11.6

12.8

kg/kg

Recycle

True

 

Supporting information

Typical uses

Aerospace engineering; automotive engineering—pistons, clutch housings, exhaust manifolds; die cast chassis for household and electronic products; siding for buildings; foil for containers and packaging; beverage cans; electrical and thermal conductors.

 
Links

Reference

ProcessUniverse

Producers

No warranty is given for the accurary of this data. Values marked * are estimates.