MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
Galvanized steel sheet with cassette insert, 5 mm
EXPANDEDLINE
PTB reference data
Original description
Galvanized steel sheet with cassette insert, 5 mm
Material properties
Manufacturer: pinta acoustic gmbh
Thickness: 0.2 in
Wall distance: 3.9 in, 7.9 in, 12 in, 20 in
Mounting: wall-joint-free solution
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 4 variants
NRC
0.30
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.15 | 0.25 | 0.30 | 0.40 | 0.45 |
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| Compare | Value | |
|---|---|---|
| 7.9 in | NRC0.30 | |
| 12 in | NRC0.25 | |
| 20 in | NRC0.30 | |
| 3.9 in | NRC0.25 |
NRC: 0.30 (derived from ISO 354 lab data)
Weight / density: 3,4 - 3,8 kg/m²
Dimensions: variabel
Measured values as a table (4 measurements)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 5 mm · 3,4 - 3,8 kg/m² · 100 mm | 0.25 | 0.05 | 0.05 | 0.20 | 0.35 | 0.35 | 0.45 |
| 5 mm · 3,4 - 3,8 kg/m² · 200 mm | 0.30 | 0.10 | 0.15 | 0.25 | 0.30 | 0.40 | 0.45 |
| 5 mm · 3,4 - 3,8 kg/m² · 300 mm | 0.25 | 0.11 | 0.15 | 0.20 | 0.30 | 0.40 | 0.45 |
| 5 mm · 3,4 - 3,8 kg/m² · 500 mm | 0.30 | 0.20 | 0.25 | 0.25 | 0.30 | 0.40 | 0.50 |
Measured values as a table (4 measurements)
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