MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, b2.2-7
Metal baffle ceiling with mineral fiber panel backing
PTB reference data
Original description
Metal baffle ceiling with mineral fiber panel backing
Material properties
Thickness: 0.3 mm + baffle curvature
Wall distance: 356 mm
Surface weight: 3.2 kg/m
Backing: 20 mm mineral fiber panel, surface-treated on room side
Flow resistance: 90 kPa·s/m²
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.85
Frequency values
αp nach ISO 11654
| f (Hz) | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|
| αp | 0.90 | 0.85 | 0.90 | 0.85 | 0.70 |
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Method (354): Measured
