The COMPOCEL® AL sandwich panel is a sandwich panel with skins and core made entirely of aluminium
The COMPOCEL® AL panel finds application in countless sectors: from shipbuilding to construction, from railways to interiors, from cabins to lifts and from clean rooms to ventilated façades. Customers can customise the panel according to their needs as it is a 100% customisable product.
Technical features
The COMPOCEL® AL sandwich panel is a honeycomb aluminium panel with skins and a core made entirely of aluminium. This honeycomb panel has unique mechanical properties, particularly when extreme tensile strength is needed at a reasonable cost in mild environmental conditions. This panel is available in untreated, primed, painted, or with SurTec 650 treatment. Colours are available in the various RAL colours subject to verification of quantity and timing.
The COMPOCEL® AL honeycomb panel can be edged, shaped or perforated, see machining and finishes. CEL can offer this perforated panel at the customer's request. Being a panel consisting of 95% aluminium, the reaction to fire ratings meet the reference standards for numerous applications. COMPOCEL® AL FR is the certified version of this panel.
In order to be able to offer the correct panel, it is necessary to specify any certification and conformity required.
A - ALUMINIUM SKINS
Thickness mm: 0,5 - 0,8 - 1 (standard)
B - STRUCTURAL ADHESIVE
C - CORE IN ALUMINIUM HONEYCOMB
Aluminium honeycomb (Alloy series 3000*)
with hexagonal cells
Diameter: Ø1/4”, Ø3/8”, Ø1/2”, Ø3/4”
Thickness Foil: from 50 to 70 microns
* To Aluminium alloy series 3000 belong: Aluminium alloy 3003, Aluminium alloy 3005, Aluminium alloy 3103, Aluminium alloy 3104.
Dimensions
Processing
The COMPOCEL® AL sandwich panel lends itself to numerous processes.
These precision processes are carried out using numerically controlled machines (CNC) by specialised operators.
To obtain special shapes and machining operations, a drawing in DWG or DXF format must be provided in advance.
The panel is cut flat according to the dimensions and geometries defined by the customers’ drawing. After the bending of the faces, the object is cleaned and packed.
COMPOCEL® AL panel finishes are made by our best craftsmen. For high-quality products in outdoor applications, we use polymeric paint systems such as PVDF and FEVE. Other types of paint are available on request.
CEL offers various surface treatments, some of which are resistant to high temperatures after checking with the technical department.
In order to offer a panel with a particular finish or colour without minimal pigment variations, we recommend placing an overall order at one time so that the laminators can carry out the painting of the sheets in one batch.
SURTEC 650 TREATMENT
The raw aluminum sheet can be treated with SurTec 650 in order to have a surface suitable for gluing, which meets the certifications required in the various aerospace and military sectors.
PAINTING
Aluminium panels can be painted with powder or liquid paints to suit various stylistic, aesthetic and environmental requirements. We offer specific coatings for interior and exterior use, including antibacterial or dissipating paints.
SERIGRAPHY AND PRINTING
Outstanding resolution and durability of printing thanks to the use of UV-resistant inks.
Panels can be finished with various types of edging:
- Flat edging (or applied edge)
Extrusions in different materials can be used: aluminium, laminate, PVC, ABS and even in a colour coordinated with that of the outer skin of the panel. They are bonded using a suitable, tear-resistant glue - T-profile edging
By means of a T-profile, applied with suitable glue after milling the core of the panel. The combination of milling and glue gives greater hold and rigidity on the outer perimeter. - Edging with a C profile
After milling the core of the panel, a C profile is applied with suitable glue. - Edging by folding a metal sheet back on itself
The outer skin, which is slightly scored, is folded over and glued perfectly until it covers the thickness of the panel.
The type of panel, material and application determine the most suitable fixing system.
The processes we can perform include:
- fixing panels to each other by means of visible or concealed rivets;
- fixing using self-tapping aluminium or stainless-steel screws;
- fixing using through-screws and bolts.
Installation and maintenance
COMPOCEL® AL panel machining can be performed with various types of machinery: from joinery saws to the most advanced CNC. CEL offers drilling, edge banding and riveting processes.
The panel's user manual indicates the conditions under which the material must be stored and preserved optimally. Below are some of the most important factors influencing panel storage:
- the storage temperature;
- handling;
- exposure to light and weather
Particular attention must be paid to the presence of protective films that may be difficult to remove when subjected to atmospheric agents or after prolonged storage.
The panel is easy to clean and degrease, but the use of acidic substances or abrasive components is not recommended as they could compromise its aesthetic qualities.
Recycling
The COMPOCEL AL® panel is 95% recyclable as it consists of 95% aluminium, which can be melted down and reused several times.
If you wish to cover the outer sheet with different materials, these must be analysed and enquiries made to the relevant supply chains as to how they can be disposed of and recovered.
Applications
Technical datasheet
Technical data sheet for standard panels (dimensions, materials and special finishes on request) |
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panel size mm |
standard 1250 x 2500 / 1250 x 3000 / 1500 x 3000; On request up to 2000 x 7000 |
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thickness’ tolerance mm |
± 0,3 |
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dimension’s tolerance mm |
± 30 |
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planarity *** mm/m |
+/-1 |
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skins’ thickness mm |
from 0,5 to 5,0 |
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skin alluminium alloy |
1000 series, 3000 series, 5000 series |
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honeycomb alluminium alloy |
3000 series, 5000 series |
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thickness of honeycomb foil μm |
50 and 70 |
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diameter of honeycomb Ø = mm |
from 3 to 19 |
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honeycomb density Kg/m³ |
from 20 to 163 |
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adhesive |
two-components polyurethane adhesive/thermoplastic film/ epoxy film/ |
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skin characteristics |
rough/primer/polyester/PVDF/ anodised |
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type panel (some examples) - Panel Thickness mmtype panel (some examples) - Skin Thickness mm |
6 |
10 |
15 |
10 |
15 |
20 |
25 |
0,5 + 0,5 |
1,0 + 1,0 |
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panel weight ‡ Kg/m2 |
3,8 |
4,0 |
4,3 |
6,7 |
7,0 |
7,3 |
7,6 |
compressive stabilised strength MPa ** ‡
|
2,9 |
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maximum load ** ‡ ASTM C 393 † N |
190 |
340 |
520 |
600 |
1.000 |
1.350 |
1.700 |
deflection at maximum load ‡
|
14 |
8 |
6 |
8 |
6 |
4 |
3 |
skins E Elastic Modulus Mpa |
68.000 - 70.000 |
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moment of inertia I ** mm4/m |
7.600 |
22.000 |
52.000 |
40.000 |
98.000 |
181.000 |
288.000 |
average resistance to peeling ** ‡
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> 280 N/76 mm or 40 Nmm/mm |
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maximum service temperature ** °C |
- 40 / + 60; on request + 80 / + 100 / + 150 |
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thermal expansion coefficient ** °C-1 |
2,3 x 10-5 |
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** Tested by Internal Laboratory
*** Approximate value
† Sample dimension with 4 support points (L, W) 540x50mm;
distance among the lower points 500mm, distance among the upper points 250mm
‡ Values for a panel with a honeycomb core of Ø6 56kg/m3 (Ø 1/4”)
PROCESSING METHODS
COMPOCEL AL FR- FIRE REACTION - CLASSES AND CERTIFICATIONS
Certified version COMPOCEL AL FR must be required while asking for a quotation might have a price surcharge due to certified materials.
Honeycomb core’s properties |
50 Microns |
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Type |
ALUMINIUM ALLOY 3003/3005/3103/3104 |
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Ø honeycomb in mm |
6 |
9 |
12 |
19 |
Ø honeycomb in inches |
1/4" |
3/8" |
1/2" |
3/4" |
Density Kg/m3 |
56 - 59 |
39 - 40 |
29 - 30 |
20 - 21 |
Compressive stabilised strength MPa |
3,0 - 3,5 |
1,4 - 1,95 |
0,8 - 0,95 |
0,4 - 0,6 |
Honeycomb core’s properties |
70 Microns |
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TipoType |
ALUMINIUM ALLOY 3003/3005/3103/3104 |
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Ø honeycomb in mm |
6 |
9 |
12 |
19 |
Ø honeycomb in inches |
1/4" |
3/8" |
1/2" |
3/4" |
Density Kg/m3 |
80 - 83 |
54 |
40 - 42 |
27 - 29 |
Compressive stabilised strength MPa |
4,3 - 4,6 |
2,5 - 2,6 |
1,41 - 1,5 |
0,85 - 0,9 |
LIABILITY DISCLAIMER: The above data are to the best of our knowledge correct and are intended to give information about our products and their potential applications. No warranty is given or implied in respect of certain properties of the products or their suitability for a particular application. We reserve the right for technical changes without further notice. We guarantee impeccable product quality under our terms of sale.
IMPORTANT
To allow us to offer you a panel with particular finishes or colors without minimal pigment variations, it is recommended to place an overall order , so that we can plan the production with the rolling mills that will carry out the painting of the sheets in a batch.