Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 a 4-4
Value from the PTB table, not verified
Mineral fiber panel, fine-pored spray finish, 20 mm, spacing 50 mm
PTB reference data
Original description
Mineral fiber panel, fine-pored spray finish, 20 mm, spacing 50 mm
Material properties
Thickness: 20 mm
Wall distance: 50 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.75
Frequency values
αp nach ISO 11654
| f (Hz) | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|
| αp | 0.55 | 0.80 | 0.85 | 0.75 | 0.55 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 mm · 2,8 kg/m^2 · 50 mm · on Kreuzlattung, grid 500 mm x 500 mm · Sichtfläche with Mineralfaservlies verfestigt, feinporig gespritzt | 0.75 | 0.22 | 0.37 | 0.57 | 0.75 | 0.80 | 0.82 | 0.82 | 0.84 | 0.86 | 0.90 | 0.78 | 0.70 | 0.72 | 0.65 | 0.53 | 0.45 |
Measured values as a table (1 measurement)
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