Mechanical properties
The composite material is rigid resistant to blows, breakage and pressure and has high bending, buckling and breaking strengths.
The strength is determined by the 0.5mm thick aluminium cover sheets in Peraluman-100, EN AW-5005 (AIMg I), acc to EN 485-2.
Mechanical properties of the cover sheets:
| tensile strength: |
Rm >= 130 N/mm2 |
| 0,2% proof stress: |
Rp0.2 >= 90 N/mm2 |
| elongation: |
A5.0 >= 5% |
| modulus of elasticity: |
E = 70000 N/mm2 |
Since the cover sheets determine the bending strength, the core material can be disregarded when calculating the bending tension.
For structural strength and deflection under load refer to your nearest ALUCOBOND® Distributor.
ALUCOBOND® Architectural Australia can provide structural analysis using computer calculations based on the Finite Element Method.
Thermal insulating properties
Due to its relatively thin and homogeneous core Alucobond is not an insulation panel.
Thermal expansion
Alucobond is effectively controlled by the aluminium cover sheets. Actual linear expansion 2.4 mm/m/100 K.
Acoustical Properties
| sound insulation (acc. To DIN 4109) |
| panel thickness |
average airborne sound transmission loss R
|
3 mm
|
24 dB
|
4 mm
|
25 dB
|
| 6 mm |
26 dB
|
Sound absorption (acc To EN 20354)
Sound absorption factor: Average = 0.05 for all panel thicknesses
Vibration Dampening
| vibration dampening EN ISO 6721 |
| panel thickness |
loss factor d
(frequency 200 Hz) |
| 3 mm |
0,0072 |
| 4 mm |
0,0087 |
| 6 mm |
0,0138 |
Rear ventilated and insulated ALUCOBOND® cladding considerably improves sound insulation. For example, the sound insulation of a light-weight concrete wall is double when clad with ALUCOBOND®.
The loss factor of ALUCOBOND® is approx. 6 times better than that of solid aluminium sheets.
Fire protection classification
Fire behaviour: The non-inflammable aluminium cover sheets protect the core. ALUCOBOND® is produced in various grades to meet applicable building regulations in different countries:
Australia
AS 1530, Part 3 - Indiciative results:
| Ignitability |
Index 0 |
| Heat evolved |
Index 0 |
| Spread of flame |
Index 0 |
| Smoke developed |
Index 0 |
Surfaces
Stove-lacquering
With ALUCOBOND® stove-lacquering, customers can choose from a wide range of standard and metallic colours or select any type of special individual colour. High quality lacquering systems with optimum resistance to weather and industrial pollution are used exclusively. These properties are achieved by using fluorinated bonding agents; for standard finishes PVF2-based top lacquers are used. Special surface effects are achieved on request by using duroplastic fluorpolymers which are virtually as weather resistant as PVF2 lacquering systems.
Anodising
DIN 17611 standards determine the criteria for anodised finishes (E6/EV1), minimum thickness of the anodic layer 20 microns, corresponding to BS 1615:1972 AA20.
Please note: Anodised sheets will have anodising rack marks at both ends of the sheet (25mm aprox)
Thermal insulating properties
Due to its relatively thin and homogeneous core ALUCOBOND® is not an insulation panel.
Thermal expansion
This is effectively controlled by the aluminium cover sheets. Actual linear expansion 24mm/m/100°C.
Temperature resistance
From -50°C to +80°C
Dimensional tolerances
| Thickness |
mill finish resp. stove lacquered ±0.2 mm
|
| Width |
-0/+4 mm
|
| Length |
1000-4000mm -0/+6mm
4001-8000mm -0/+12mm
|
Due to the production process, a displacement of the cover sheets of max. 2mm to one side may occur along the longer sides of the panels if not specially trimmed.
|
Photographs