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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.
6063 is typically used in:
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 is a variation of 6063 with greater strength but retains the same good surface finish qualities and affinity for anodising.
6063A is used in the same applications as 6063. It is also used in:
Road transport
Rail transport
Extreme sports equipment
| Chemical Element | % Present |
|---|---|
| Manganese (Mn) | 0.0 – 0.10 |
| Iron (Fe) | 0.0 – 0.35 |
| Magnesium (Mg) | 0.45 – 0.90 |
| Silicon (Si) | 0.20 – 0.60 |
| Zinc (Zn) | 0.0 – 0.10 |
| Titanium (Ti) | 0.0 – 0.10 |
| Chromium (Cr) | 0.0 – 0.10 |
| Copper (Cu) | 0.0 – 0.10 |
| Other (Each) | 0.0 – 0.05 |
| Others (Total) | 0.0 – 0.15 |
| Aluminium (Al) | Balance |
| Physical Property | Value |
|---|---|
| Density | 2.70 g/cm3 |
| Melting Point | 655 °C |
| Thermal Expansion | 23.5 x10^-6 /K |
| Modulus of Elasticity | 69.5 GPa |
| Thermal Conductivity | 201 W/m.K |
| Electrical Resistivity | 0.033 x10^-6 Ω .m |
| Electrical Resistivity | 52 % IACS |
| Mechanical Property | Value |
|---|---|
| Proof Stress | 170 Min MPa |
| Tensile Strength | 215 Min MPa |
| Hardness Brinell | 75 HB |
| Elongation A | 10 Min % |
| Elongation A50 mm | 8 Min % |
| Mechanical Property | Value |
|---|---|
| Proof Stress | 160 Min MPa |
| Tensile Strength | 195 Min MPa |
| Hardness Brinell | 75 HB |
| Elongation A | 10 Min % |
| Mechanical Property | Value |
|---|---|
| Proof Stress | 170 Min MPa |
| Tensile Strength | 215 Min MPa |
| Elongation A50 mm | 8 Min % |
| Hardness Brinell | 75 HB |
| Elongation A | 10 Min % |
| Mechanical Property | Value |
|---|---|
| Proof Stress | 170 Min MPa |
| Tensile Strength | 215 Min MPa |
| Elongation A50 mm | 6 Min % |
| Hardness Brinell | 75 HB |
| Elongation A | 8 Min % |
| Mechanical Property | Value |
|---|---|
| Proof Stress | 160 Min MPa |
| Tensile Strength | 195 Min MPa |
| Elongation A50 mm | 6 Min % |
| Hardness Brinell | 75 HB |
| Elongation A | 8 Min % |
Aluminium alloy 6063/6063A 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
The most common tempers for 6063 aluminium are:
Alloy 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: Good
Weldability – Arc: Very Good
Weldability – Resistance: Good
Brazability: Very Good
Solderability: Good
Workability – Cold: Average (Acceptable)
Machinability: Good
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With recent events, it’s really important to know that what kind of fire standards the cladding you’re using on your building is held to. By law, all buildings above 18 metres in height need to have cladding which is fire rated. Most cladding has some sort of protection built in, but only those which are FR should be used on these taller buildings.
These ratings range from an A1 to a D in accordance with European Standards EN-13501-1.
Class A1 – Products are described as having no contribution to fire at any stage. BS EN 13501 sets several thresholds for combustion performance when tested to both EN ISO 1716 and EN ISO 1182. One of these thresholds is a maximum heat of combustion of 2MJ/kg. Typical products meeting this classification include most inorganic materials such as metal and stone.
Class A2, s3, d2 – Products are described as having no significant contribution to fire at any stage. BS EN 13501 sets several thresholds for combustion when tested to EN ISO 1182, or both EN ISO 1716 and EN 13823. One of these thresholds is a maximum heat of combustion of 3MJ/kg. A typical product meeting this classification is plasterboard.For comparison, Wood has a typical value of 15 MJ/Kg.
Some products use a slightly different fire classification known as the BR 135 standard, set by the BRE (Building Research Establishment). When using a cladding product that is classified using this method, a full classification report must be supplied to prove compliance with BR 135.
For full information on the fire rating of a specific product, get in touch with us. We’d be more than happy to help.
