PERMALITE ALSPAN™

Product Description and Features

PERMALITE ALSPAN™ is a roofing profile made from marine grade aluminium alloy. It was designed specifically to provide a wide spanning capability, to have a high water water carrying capacity and to accommodate foot traffic without damage.

All of these requirements are realised in the distinctive ribs and wide pans which offer a well-defined presentation of large areas. 

• Long lasting, durable, lightweight alternative to other cladding materials.
• High thermal insulation. This is significant in reducing the operating cost of air conditioning.
• Minimal maintenance to remain corrosion free.
• The lighter mass of aluminium can provide a substantial reduction of the cost of transport to remote locations.

Produced to: AS1734

Common Uses of this product

The large robust ribs and exceptional water carrying capacity of this profile make it ideal for large high performance roofs such as power stations and industrial or commercial buildings. The profile is also used on walls where a strong visual effect is required.

Warnings

• Galvanic corrosion may occur when aluminium, in the presence of water, is placed in contact with metals other than alloys of aluminium, non-magnetic stainless steel or zinc. Direct contact with zinc coated steel is not recommended in marine or industrial environments.

Product Details

Schematic

Materials

PERMALITE LT7™, PERMALITE ALSPAN™ and PERMALITE V-RIB™ are manufactured entirely from marine grade aluminium alloy with exceptional resistance to corrosion in marine or industrial environments.

The profiles are available in three finishes:

• Mill Finish - a smooth lustrous finish which will dull relatively quickly and enhances corrosion resistance.
• Standard Finish - stucco embossed mill finish, which reduces the specular reflectance of mill finish sheet.
• Painted Finish - a range of quality painted finishes are available.

PERMALITE™ Roof and Wall Sheet may be supplied prepainted on one or both sides.

Aluminium provides a superior painting base for paint systems. Before roll forming, the paint is applied to the coiled sheet by reverse roller coating and heat curing on paint lines employing the latest painting technology.

The paint systems commonly used are:

1. Polyesters - These coatings have outstanding colour and gloss retention characteristics and are suitable for exterior roofing and walling applications in all but the most severe environments.
2. Fluorocarbons - Premium coatings with excellent weatherability and durability. These coatings are recommended for severe marine and industrial environments.

Colour Range

PERMALITE™ Colour	Matches COLORBOND® steel Colour
Glacier White ®	Surfmist®
Enduro Green®	Pale Eucalypt®
Sahara®	Dune®
Perpetual Green®	Wilderness®
Moon Shadow®	Windspray®
Mill Finish - Unpainted
Stucco Embossed - Unpainted

Please note that Resiliant Red™ and Eternal Blue™ have been removed from our standard colour range. For any specific colour enquiries and lead times please contact 1300 850 389.

Mechanical Properties

Alloy:	5251
Yield Strength:	280Mpa
Ultimate Tensile Strength:	300Mpa
Elongation:	5%
Coefficient of Thermal:	24 x 10-6 per °C
Expansion:	Approx 1.2mm/m over 50 °C

Size Availability

Thickness Range:	0.70mm, 0.90mm, 1.2mm
Length Range:	1.0 through 21.2 metres
Pan Cross Section Area:	37,500mm2 / metre sheet width

Profile Properties

Thickness (mm)	Kg/m2 Cover Width	Kg/m Length	Section Modulus x 103 mm3	Moment of Intertia x 103 mm4
0.70	2.66	2.29	8.9	306
0.90	3.42	2.95	11.4	393
1.20	4.56	3.93	15.2	524