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Calme

Product catalog summary

Product Overview:
Calme is a broadband sound absorption material made from porous aluminium, suitable for both interior and exterior applications. It is used in various settings such as offices, auditoriums, schools, and industrial environments.

Specifications:

Material: Sintered porous aluminium with 40-45% porosity.
Finish Options: Embossed, corrugated, stucco, and smooth (only available in 3 mm thickness).
Fire Rating: Euroclass A1, indicating it is incombustible.
Dimensions: Standard sizes are 600 x 600 mm and 1200 x 600 mm, with custom sizes available.
Thickness: Available in 2 mm and 3 mm.
Weight: 3.33 kg/m² for 2 mm thickness and 5.0 kg/m² for 3 mm thickness.
Thermal Properties: Thermal conduction is 96 kcl/mhC, and thermal radiation is 18.4 W/m²K. Heat resistance reduces to 70% at 200°C and 50% at 400°C, with a melting point at 650°C.
Air Flow Resistance: 218 rayls/mm.

Physical Properties:

Density: Calme A is 1.59 g/cm³, and Calme C is 1.52 g/cm³.
Expansion/Contraction: 0.6 mm per 1.2 meters with a 30°C temperature increase.
Mounting: Can be mounted using double-sided tape, screws, or rivets.
Bending: Bendable to a radius of 3 m by hand; smaller radii require a bending machine.

Weatherproof Testing:

Salt Water Spray: No white rust or degradation after 2000 hours.
Sunlight Exposure: No change in appearance or performance after 2000 hours.
Freezing & Melting: No change after 100 cycles.
Desiccation: 99% water evaporation in 1 hour.
Thermal Resistance: 15% decrease in tensile strength from 20°C to 100°C, stable up to 300°C.

Absorption Coefficients:
Measured according to ISO 354 standard with various configurations of air cavities and rockwool.

Catalog excerpts

__________________________________________________________________________________________________ TECHNICAL DATA SHEET _______________________________________________________________________________________________________________________________________________________ CALME CATEGORY Broadband sound absorption with porous aluminium APPLICATIONS Type A: interior (offices, musea, auditoria, schools, hotels, restaurants, bars, public buildings, nursing homes, hospitals, concert halls, ..) Type C: swimming pools, outdoors applications, industry (sound walls, silencers, …) MOUNTING PLATE sintered porous aluminium POROSITY 40-45 % FINISH - embossed - corrugated - stucco - smooth (only 3 mm thickness) FIRE RATING Euroclass A1 (incombustible) DIMENSIONS - 600 x 600 mm (tolerance +/- 0.3mm by press cutting) - 1200 x 600 mm (tolerance +/- 0.3mm by press cutting) custom-made tiles possible THICKNESS 2 mm or 3 mm TOLERANCE Length and width: -0.35 mm / + 0.35 mm Thickness: +0.3 mm / +0.3 mm WEIGHT 3.33 kg / m² (thickness 2 mm) 5.0 kg / m² (thickness 3 mm) THERMAL CONDUCTION 96 kcl / mhC THERMAL RADIATION 18.4 W / m²K HEAT RESISTANCE 200 °C: reduction to 70 % 400 °C: reduction to 50 % 650 °C: melting point AIR FLOW RESISTANCE 218 rayls / mm ___________________________________________________________________________________________________ PO BOX 33 3001 LEUVEN BELGIUM T. +32-16 40 25 26 F. +32-16 40 07 26 E. [email protected] W. WWW.SONOGAMMA.COM

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