Mineral woolHigh-frequency absorber

Physikalisch-Technische Bundesanstalt

Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 69

Value from the PTB table, not verified

AMF-Thermatex Fresko mineral fiber panel

Fresko

PTB reference data

Original description

Material properties

Manufacturer: AMF - Mineralplatten GmbH Betriebs KG

Wall distance: 200 mm

Dimensions: 300 x 300 mm to 1250 x 1250 mm

Surface weight: 7.2 kg/m²

Surface: embossed

Up to fire class: fire-resistant

ISO 354 – reverberation chamber

α_w

0.60

α_p nach ISO 11654

f (Hz)	125	250	500	1k	2k	4k
α_p	0.45	0.40	0.55	0.65	0.75	1.00

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Value from the PTB table, not verified

Measured values as a table (1 measurement)

AMF-Thermatex Fresko mineral fiber panel: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	α_w	100 Hz	125 Hz	160 Hz	200 Hz	250 Hz	315 Hz	400 Hz	500 Hz	630 Hz	800 Hz	1000 Hz	1250 Hz	1600 Hz	2000 Hz	2500 Hz	3150 Hz	4000 Hz	5000 Hz
7,2 kg / m² · 200 mm	0.60	0.55	0.38	0.40	0.38	0.38	0.38	0.45	0.55	0.58	0.60	0.68	0.70	0.72	0.75	0.85	0.90	1.00	1.10

Measured values as a table (1 measurement)

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Last updated: 28/08/2026