Nordisk Akustik self-adhesive bonded foam

PTB reference data

Original description

Material properties

Manufacturer: Nordisk Akustik A/S

Thickness: 0.4 in, 0.8 in, 1.2 in

Reverberation chamber (ASTM C423 / ISO 354)· 3 variants

NRC

0.65

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.20	0.30	0.60	0.80	0.75	0.55

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NRC: 0.65 (derived from ISO 354 lab data)

Weight / density: 100 kg / m³

Dimensions: 1000 x 79 in

Measured values as a table (3 measurements)

Nordisk Akustik self-adhesive bonded foam: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	NRC	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	6300 Hz	8000 Hz
10 mm · 100 kg / m³	0.50	0.15	0.16	0.18	0.20	0.30	0.40	0.51	0.48	0.46	0.44	0.60	0.73	0.88	0.82	0.75	0.68	0.60	0.50	0.44
20 mm · 100 kg / m³	0.65	0.18	0.22	0.26	0.29	0.40	0.52	0.63	0.70	0.77	0.83	0.82	0.81	0.80	0.70	0.60	0.50	0.53	0.57	0.60
30 mm · 100 kg / m³	0.60	0.26	0.34	0.42	0.52	0.60	0.66	0.71	0.69	0.68	0.67	0.60	0.52	0.48	0.49	0.50	0.51	0.52	0.53	0.54

Measured values as a table (3 measurements)

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Last updated: 08/28/2026