Datasheet-AL-6063-T5

GENERAL INFORMATION
Alloy 6063 is a heat-treatable alloy having good combination of extrudability and mechanical properties, also responding well to
polishing, anodizing, chemical brightening and dyeing.
Thin-walled hollows and intricate solid shapes could be produced more readily and easily with this alloy.
ALLOY 6063
Aluminium-Magnesium-Silicon alloy (AlMgSiO)
Chemical Composition
%Si       %Fe %Cu  %Cu  %Mn      %Mg      %Cr  %Zn      %Ti      %Other    %Aluminium
0.35–0.50    0.10–0.30    0.10  0.10     0.35–0.55       0.05      0.10      0.10    0.05   Remainder
Mechanical Properties
Temper    Ultimate Tensile Strength (MPa)    0.2%Proof Stress (MPa)    % Elongation
T4    130          69        14
T5    150          110        7
T6    185          160        7
Physical Properties
Density              2.71 X 10⁻⁶ kg/mm³
Melting Range            600 – 650 °C
Specific Heat between 0 - 100°C        879 J/kg °C
Coefficient of linear expansion between 20 - 100°C  
Thermal Conductivity at 25°C        23 X 10⁻⁶ / °C
Electrical Resistivity at 20°C        0.033Ωm
Modulus of Elasticity          69 X 103 MPa
Temper Designation
F -   Indicates the as-fabricated condition where to control has been exercised over the temper of the alloy.
T -  Indicates the heat treated alloy.
T4 -  Solution heat treatment followed by natural ageing at room temperature to a substantial stable condition.
T5 -  Artificial ageing after an elevated temperature, rapid cooling fabrication process such as casting or extrusion.
T6 -  Solution heat treatment followed by artificial ageing.
For subsequent severe forming process as in bending, please opt for softer tempers.
Mill Finish
Natural aluminium finish of the extrusion-press with no further anodizing or coloring process.
Natural Anidizing Finish
By  means  of  electro-chemical  process  natural oxide-film  will  be  formed  and  thickened  considerably  on  the  metal  surface.  The
aluminium extrusion is then sealed in hot deionised-water which closes of the pores and permanently seals the oxide film imparting
to the metal surface the extreme hardness, corrosion and wear resistance of the oxide.
Alexindo  natural  anodized  finish  conform  to  International Standard  an  is  available  in  nominal  film-thickness  of  5,  10,  18  and  25
microns.
For normal and severe atmospheric condition, film thickness of 10 and 25 microns respectively should be recommended.
Colour Finish
In Alexindo colour process, inorganic metal colour particles are deposited and fixed electrolytically at the very base of the process of
anodic pores of anodic film allowing virtually full thickness off the anodic film to protect them.
The  aluminium  extrusion is  then  sealed in  hot  deionised water  which  closes off  the  pores  and  permanently  sealed in  the  colour
particles.
The  colouring  process  in combination  with anodizing is  to  yield  a  finish  which  is  lightfast,  abrasion  and  corrosion  resistance  and
unchanging colour intensity.
For normal and severe atmospheric condition, film thickness of 18 and 25 microns respectively should be recommended.