Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 217
Value from the PTB table, not verified
Owakustik MF 2 Streuloch mineral fiber absorber
Owakustik – MF 2 Streuloch
PTB reference data
Original description
Owakustik MF 2 Streuloch mineral fiber absorber
Material properties
Manufacturer: Odenwaldwerk
Thickness: 0.6 in
Wall distance: approx. 7.9 in
Perforation: irregularly perforated
Hole size: 0.1 in, 0.2 in
Up to fire class: non-combustible
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.70
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.50 | 0.45 | 0.60 | 0.80 | 0.85 | 0.75 |
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Value from the PTB table, not verified
NRC: 0.70 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16 mm · 5 kg / m² · ca. 200 mm · weiss farbbeschichtet | 0.70 | 0.49 | 0.47 | 0.45 | 0.43 | 0.49 | 0.56 | 0.61 | 0.67 | 0.74 | 0.80 | 0.82 | 0.86 | 0.88 | 0.84 | 0.80 | 0.72 |
Measured values as a table (1 measurement)
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