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Armstrong TATRA

Nrc	0.55
Colour	Blanc
System	Apparent et démontable - Système C
Alpha w	0.55(H)
Nominal	600 x 600 mm
Material	mineral
Width mm	600
Edge type	Board
Length mm	600
Air quality	A+
Nrc standard	ASTM C 423
Thickness mm	15
Weight kg m2	3.6 - 3.8
Alpha p values	125 Hz: 0.40; 250 Hz: 0.35; 500 Hz: 0.50; 1000 Hz: 0.70; 2000 Hz: 0.70; 4000 Hz: 0.75
Alpha w values	0.30; 0.35; 0.40; 0.45; 0.50; 0.55
Emission class	E1
Absorption class	D
Recycled content	22.5% (2023)
Light reflectance	83%
Durability standard	EN ISO 14021
Fire classification	KM1 (G1, V1, D1, T1)
Humidity resistance	70% RH
Lateral attenuation	Dn,f,w = 32 dB
Thermal conductivity	λ = 0.060 W/mK
Reaction to fire class	A2-s1, d0
Formaldehyde emission level	lowest possible test result
Acoustic absorption standard	EN ISO 354; EN ISO 11654
Fire classification standard	123-FZ
Lateral attenuation standard	EN ISO 10848-2; EN ISO 717-1
Thermal conductivity standard	EN 12667

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Technical specifications