Quash D 2600 30 closed-cell acoustic foam

Quash D 2600 30

PTB reference data

Original description

Material properties

Manufacturer: Büro f. Schalltechnik

Thickness: 30 mm, 50 mm

ISO 354 – reverberation chamber· 2 variants

α_w

0.55

α_p per ISO 11654

f (Hz)	125	250	500	1k	2k	4k
α_p	0.05	0.30	0.85	0.50	0.65	0.50

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Compare		Value
	30 mm	α_w0.55
	50 mm	α_w0.45

Weight / density: ca. 32 kg/m³

Dimensions: 1000 x 400 x 30 mm

Measured values as a table (2 measurements)

Quash D 2600 30 closed-cell acoustic foam: 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
30 mm · ca. 32 kg/m³ · geschlossenzellig	0.55	0.04	0.06	0.10	0.15	0.25	0.44	0.76	1.06	0.69	0.42	0.40	0.65	0.60	0.69	0.59	0.58	0.53	0.40
50 mm · ca. 32 kg/m³ · geschlossenzellig	0.45	0.05	0.04	0.07	0.09	0.14	0.22	0.35	0.63	0.94	0.84	0.63	0.47	0.51	0.68	0.62	0.58	0.49	0.36

Measured values as a table (2 measurements)

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Last updated: 28/08/2026