Additional information
| Bracket Type | Single, Double |
|---|---|
| Bracket Size | 40mm, 50mm, 65mm, 80mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 220mm, 240mm, 260mm, 280mm, 300mm, 320mm, 340mm, 360mm, 380mm, 400mm |
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FastFrame is an adjustable cladding fixing system that suits most brands of exterior cladding panels. We can offer an in-house technical service to calculate the safest yet most cost-effective bracket spacings to support your facade.
| Bracket Type | Single, Double |
|---|---|
| Bracket Size | 40mm, 50mm, 65mm, 80mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 220mm, 240mm, 260mm, 280mm, 300mm, 320mm, 340mm, 360mm, 380mm, 400mm |
Aluminium alloy 5251 is a medium strength alloy possessing good ductility and therefore good formability. Alloy 5251 is known for work hardening rapidly and is readily weldable. It also possesses high corrosion resistance particularly in marine environments.
Mechanical Properties shown are for H22 condition.
| Chemical Element | % Present |
|---|---|
| Manganese (Mn) | 0.10 – 0.50 |
| Copper (Cu) | 0.0 – 0.15 |
| Magnesium (Mg) | 1.70 – 2.40 |
| Silicon (Si) | 0.0 – 0.40 |
| Zinc (Zn) | 0.0 – 0.15 |
| Chromium (Cr) | 0.0 – 0.15 |
| Titanium (Ti) | 0.0 – 0.15 |
| Other (Each) | 0.0 – 0.05 |
| Others (Total) | 0.0 – 0.15 |
| Iron (Fe) | 0.0 – 0.50 |
| Aluminium (Al) | Balance |
| Physical Property | Value |
|---|---|
| Density | 2.69 g/cm3 |
| Melting Point | 625 °C |
| Thermal Expansion | 25 x10^-6 /K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 134 W/m.K |
| Electrical Resistivity | 0.044 x10^-6 Ω .m |
| Physical Property | Value |
|---|---|
| Density | 2.69 g/cm3 |
| Melting Point | 625 °C |
| Thermal Expansion | 25 x10^-6 /K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 134 W/m.K |
| Electrical Resistivity | 0.044 x10^-6 Ω .m |
Alloy 5251 corresponds to the following standard designations and specifications, although may not be a direct equivalent:
Al Mg2
Al 2.0Mg 0.3Mn
Aluminium alloy 5251 is a readily weldable alloy.
The recommended filler wire is 5356 when welding alloy 5251 to itself, 6XXX series alloys, 7XXX series alloys and most other 5XXX alloys.
When welding alloy 5251 to 5005, 5020, 1XXX series or 3XXX series alloys, the recommended filler wire is 4043.
Weldability – Gas: Very Good Weldability – Arc: Very Good Weldability – Resistance: Very Good Brazability: Poor
Workability – Cold: Very Good
Machinability: Average
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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.
