Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA 1968, Tabelle a4-1
Value from the PTB table, not verified
Mineral fiber panel, bonded, sprayed surface
PTB reference data
Original description
Mineral fiber panel, bonded, sprayed surface
Material properties
Thickness: 0.8 in
Surface weight: 2.8 kg/m²
Backing: visible surface stabilized and sprayed (flake pattern)
Flow resistance: 90 Rayl
Mounting: spot-bonded to substrate
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.60
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|
| αp | 0.15 | 0.50 | 0.85 | 0.95 | 0.95 |
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Value from the PTB table, not verified
NRC: 0.60 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 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 · Platte punktweise on Untergrund geklebt · Sichtfläche verfestigt and gespritzt (Flockenmuster) | 0.60 | 0.05 | 0.05 | 0.13 | 0.22 | 0.38 | 0.49 | 0.60 | 0.78 | 0.86 | 0.93 | 0.93 | 0.99 | 0.99 | 1.02 | 0.94 | 0.88 |
Measured values as a table (1 measurement)
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