Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: RAMSETE
Value from the PTB table, not verified
Rockwool panel, thickness 50 mm, density 40 kg/m³ (series 3)
PTB reference data
Original description
Rockwool panel, thickness 50 mm, density 40 kg/m³ (series 3)
Material properties
Thickness: 2 in
Density: 40 kg/m³
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.80
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.60 | 0.85 | 0.85 | 0.85 | 0.85 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Value from the PTB table, not verified
NRC: 0.80 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 8000 Hz |
|---|---|---|---|---|---|---|---|---|---|
| Measurement 1 | 0.80 | 0.00 | 0.23 | 0.59 | 0.86 | 0.86 | 0.86 | 0.86 | 0.86 |
Measured values as a table (1 measurement)
Access frequency bands, variants and export. Create a permanent free account
Last updated: