Sep 27 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Annealing
Cold Working
Welding
Forging
Forming
Machinability
Heat Treatment
Hot Working
Hardening
Applications
Introduction
Aluminium / Aluminum alloys have strong corrosion resistance
characteristics and high electrical conductivity. These alloys are
sensitive to high temperatures ranging between 200 and 250°C (392 and
482°F) and tend to lose their strength. They are good low-temperature
alloys and gain strength when exposed to subzero temperatures.
Aluminium / Aluminum 5086 alloy is a high strength structural alloy.
The following datasheet provides an overview of Aluminium / Aluminum
5086 alloy.
Chemical Composition
The chemical composition of Aluminium / Aluminum 5086 alloy is
outlined in the following table.
| Element |
Content
(%) |
| Al |
95.4 |
| Mg |
4.0 |
| Cr |
0.15 |
| Mn |
0.4 |
Physical Properties
The following table shows the physical properties of Aluminium /
Aluminum 5086 alloy.
| Properties |
Metric |
Imperial |
| Density |
2.65 g/cm3 |
0.0957 lb/in3 |
| Melting point |
588°C |
1090°F |
Mechanical Properties
The mechanical properties of Aluminium / Aluminum 5086 alloy are
displayed in the following table.
| Properties |
Metric |
Imperial |
| Elastic modulus |
70-80 GPa |
10152-11603 ksi |
| Poisson's ratio |
0.33 |
0.33 |
Thermal Properties
The thermal properties of Aluminium / Aluminum 5086 alloy are
given in the following table.
| Properties |
Conditions |
| T
(ºC) |
Treatment |
| Thermal expansion |
23.9 (10-6/ºC) |
20-100 |
- |
| Thermal conductivity |
127 (W/mK) |
25 |
All |
Other Designations
Equivalent materials to Aluminium / Aluminum 5086 alloy are given in
the table below.
| ASTM B209 |
ASTM B210 |
ASTM B221 |
ASTM B241 |
ASTM B313 |
| ASTM B345 |
ASTM B361 |
ASTM B547 |
ASTM B548 |
MIL C-26094 |
| MIL S-24149/2 |
QQ A-200/5 |
QQ A-250/7 |
SAE J454 |
QQ WW-T-700/5 |
Fabrication and Heat Treatment
Annealing
Aluminium / Aluminum 5086 alloy is annealed at 343°C (650°F) and
then cooled in air.
Cold Working
Aluminium / Aluminum 5086 alloy has excellent cold working
characteristics in the O temper and less good H38 and H36 tempers.
Welding
Conventional methods are suitable for welding Aluminium / Aluminum
5086 alloy. Excellent results can be obtained when electric arc welding
is used for this alloy.
Forging
Aluminium / Aluminum 5086 alloy can be forged.
Forming
Aluminium / Aluminum 5086 alloy has excellent forming
characteristics in the O temper and less good characteristics in H38
and H36 tempers.
Machinability
Aluminium / Aluminum 5086 alloy has good machining characteristics
in the strain hardened tempers that include H38, H36 and H34.
Heat Treatment
Aluminium / Aluminum 5086 alloy is a non-heat treatable alloy.
Hot Working
The Aluminium / Aluminum 5086 alloy has excellent cold forming
characteristics that do not usually require hot working.
Hardening
Aluminium / Aluminum 5086 alloy can be hardened only by being cold
worked.
Applications
Aluminium / Aluminum 5086 alloy is used in missile components,
unfired and welded pressure vessels, auto aircraft cryogenics, TV
towers, drilling rigs, transportation equipment, tanks and marine
components.