Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 80
Value from the PTB table, not verified
Armstrong Minaform S-Quadrat honeycomb system, spacing 140 mm
Minaform S-Quadrat
PTB reference data
Original description
Armstrong Minaform S-Quadrat honeycomb system, spacing 140 mm
Material properties
Manufacturer: Armstrong Cork International GmbH
Thickness: 16 mm
Wall distance: 140 mm
Perforation: irregular scattered perforation
Surface: white paint
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.90
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.60 | 0.90 | 1.00 | 1.00 | 1.00 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16 mm · 5,25 kg / m² · 140 mm | 0.90 | 0.68 | 0.70 | 0.45 | 0.62 | 0.58 | 0.62 | 0.80 | 0.88 | 1.00 | 1.14 | 1.14 | 1.14 | 1.12 | 1.09 | 1.05 | 1.13 | 1.04 | 1.07 |
Measured values as a table (1 measurement)
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