Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 262
Value from the PTB table, not verified
Rheinhold & Mahla Basalan mineral fiber insulation board
Basalan high-temperature insulation board – BPO-HT 180
PTB reference data
Original description
Rheinhold & Mahla Basalan mineral fiber insulation board
Material properties
Manufacturer: Rheinhold & Mahla AG
Thickness: 1.2 in, 2 in
Up to fire class: non-combustible
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
NRC
0.95
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.30 | 0.70 | 1.00 | 1.00 | 1.00 | 0.90 |
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| Compare | Value | |
|---|---|---|
| 2 in | NRC0.95 | |
| 1.2 in | NRC0.75 |
NRC: 0.95 (derived from ISO 354 lab data)
Dimensions: 1000 x 20 in, 1000 x 25 in
Measured values as a table (2 measurements)
| Build-up | NRC | 125 Hz | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 30 mm | 0.75 | 0.15 | 0.21 | 0.28 | 0.35 | 0.50 | 0.66 | 0.80 | 0.84 | 0.87 | 0.90 | 0.93 | 0.98 | 1.00 | 1.00 | 1.00 | 1.00 |
| 50 mm | 0.95 | 0.20 | 0.39 | 0.57 | 0.70 | 0.82 | 0.93 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.97 | 0.93 | 0.90 |
Measured values as a table (2 measurements)
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