Aluminium Alloy | Commercial Alloy
6063 - T4 Extruded Rod and Bar
Aluminium Alloy 6063
Aluminium alloy 6063 is a medium strength alloy commonly referred to as an architectural alloy. It is normally used in intricate extrusions.
It has a good surface finish, high corrosion resistance, is readily suited to welding and can be easily anodised. Most commonly available as T6 temper, in the T4 condition it has good formability.
Applications
6063 is typically used in:
Architectural applications
Extrusions
Window frames
Doors
Shop fittings
Irrigation tubing
In balustrading the rails and posts are normally in the T6 temper and formed elbows and bends are T4. T4 temper 6063 aluminium is also finding applications in hydroformed tube for chassis.
Aluminium Alloy 6063A
Aluminium alloy 6063A is a variation of 6063 with greater strength but retains the same good surface finish qualities and affinity for anodising.
Applications
6063A is used in the same applications as 6063. It is also used in:
Road transport
Rail transport
Extreme sports equipment
Chemical Composition
|
BS EN 573-3:2009 Alloy 6063 |
|
|---|---|
| Chemical Element | % Present |
| Aluminium (Al) | balance |
| Other (Each) | 0.05 max |
| Manganese (Mn) | 0.1 max |
| Zinc (Zn) | 0.1 max |
| Titanium (Ti) | 0.1 max |
| Chromium (Cr) | 0.1 max |
| Copper (Cu) | 0.1 max |
| Others (Total) | 0.15 max |
| Iron (Fe) | 0.35 max |
| Silicon (Si) | 0.2 - 0.6 |
| Magnesium (Mg) | 0.45 - 0.9 |
Alloy Designations
Aluminium alloy 6063/6063A also corresponds to the following standard designations and specifications but may not be a direct equivalent:
AA6063
Al Mg0.7Si
GS10
AlMgSi0.5
A-GS
3.32206
ASTM B210
ASTM B221
ASTM B241 (Pipe- Seamless)
ASTM B345 (Pipe- Seamless)
ASTM B361
ASTM B429
ASTM B483
ASTM B491
MIL G-18014
MIL G-18015
MIL P-25995
MIL W-85
QQ A-200/9
SAE J454
UNS A96063
HE19
Temper Types
The most common temper for 6063 aluminium are:
- O
- T4
- T6
Supplied Forms
Alloy 6063 is supplied as standard extrusions including tee, channel, angle and flat bar as well as box section and tube
- Extrusions
- Tube
Generic Physical Properties
| Physical Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Point | 600 °C |
| Thermal Expansion | 23.5 x10^-6 /K |
| Modulus of Elasticity | 69.5 GPa |
| Thermal Conductivity | 200 W/m.K |
| Electrical Resistivity | 0.035 x10^-6 Ω .m |
Mechanical Properties
|
BS EN 755-2:2008 Extruded Rod and Bar - Up to 150mm Dia or A/F |
|
|---|---|
| Mechanical Property | Value |
| Proof Stress | 90 Min MPa |
| Tensile Strength | 150 Min MPa |
| Elongation A50 mm | 10 Min % |
| Hardness Brinell | 50 HB |
| Elongation A | 12 Min % |
Properties above are for material in the T4 condition
Weldability
6063 is suitable for all conventional welding methods.
Welding wire generally should be alloy 5183 or alloy 4043.
When maximum electrical conductivity is required use alloy 4043.
For strength and conductivity use alloy 5346 and increase the size of the weld to compensate for the lower conductivity.
Weldability – Gas: Excellent
Weldability – Arc: Excellent
Weldability – Resistance: Excellent
Brazability: Excellent
Solderability: Good
Fabrication
Workability - Cold: Average
Machinability: Average