Mineral woolHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 191
Value from the PTB table, not verified
Knauf Mineralfaserplatte KMF mineral fiber panel
Knauf-Mineralfaserplatte – KMF
PTB reference data
Original description
Knauf Mineralfaserplatte KMF mineral fiber panel
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 0.6 in
Wall distance: 3.9 in, 12 in
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
NRC
0.60
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.40 | 0.50 | 0.65 | 0.75 | 0.75 |
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| Compare | Value | |
|---|---|---|
| 3.9 in | NRC0.60 | |
| 12 in | NRC0.60 |
NRC: 0.60 (derived from ISO 354 lab data)
Weight / density: ca. 7 kg / m²
Dimensions: 625 x 25 in, 625 x 49 in, 600 x 47 in
Measured values as a table (2 measurements)
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 mm · ca. 7 kg / m² · 100 mm | 0.60 | 0.20 | 0.26 | 0.35 | 0.42 | 0.44 | 0.46 | 0.50 | 0.56 | 0.60 | 0.67 | 0.70 | 0.73 | 0.76 | 0.76 | 0.76 | 0.76 |
| 15 mm · ca. 7 kg / m² · 300 mm | 0.60 | 0.30 | 0.32 | 0.35 | 0.37 | 0.42 | 0.46 | 0.53 | 0.59 | 0.62 | 0.67 | 0.70 | 0.73 | 0.75 | 0.76 | 0.76 | 0.77 |
Measured values as a table (2 measurements)
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