MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 67
Lindner metal ceiling with mineral wool
PTB reference data
Original description
Lindner metal ceiling with mineral wool
Material properties
Manufacturer: Lindner Holding KGaA
Thickness: 0.63-0.75 mm (steel), 0.7-1 mm (aluminum)
Backing: 20-50 mm mineral wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.81
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.75 | 0.80 | 0.75 | 1.00 | 1.00 | 0.75 |
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Method (354): Measured