OtherHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 a 4-9
Mineral shot panel with porous hard foil
PTB reference data
Original description
Mineral shot panel with porous hard foil
Material properties
Thickness: 15 mm
Wall distance: 50 mm
Surface weight: 4.4 kg/m²
Surface: porous hard foil on both sides
Flow resistance: 400 Rayl
Mounting: on 24/48 mm cross-battening
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.48
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.45 | 0.70 | 0.50 | 0.45 | 0.55 |
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Method (354): Measured