MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
pinta acoustic EXPANDEDLINE MEDIUM expanded metal raft
EXPANDEDLINE – MEDIUM
PTB reference data
Original description
pinta acoustic EXPANDEDLINE MEDIUM expanded metal raft
Material properties
Manufacturer: pinta acoustic gmbh
Thickness: 1.5 mm
Wall distance: 100 mm, 200 mm, 300 mm, 500 mm
Surface: galvanized
Mounting: with wall distance
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 4 variants
αw
0.30
Frequency values
αp per ISO 11654
| 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 | |
|---|---|---|
| 200 mm | αw0.30 | |
| 300 mm | αw0.30 | |
| 500 mm | αw0.30 | |
| 100 mm | αw0.25 |
Weight / density: 4,4 - 4,8 kg/m²
Dimensions: variabel
Measured values as a table (4 measurements)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 1,5 mm · 4,4 - 4,8 kg/m² · 100 mm | 0.25 | 0.05 | 0.05 | 0.20 | 0.35 | 0.35 | 0.45 |
| 1,5 mm · 4,4 - 4,8 kg/m² · 200 mm | 0.30 | 0.10 | 0.15 | 0.25 | 0.30 | 0.40 | 0.45 |
| 1,5 mm · 4,4 - 4,8 kg/m² · 300 mm | 0.30 | 0.11 | 0.15 | 0.20 | 0.30 | 0.40 | 0.45 |
| 1,5 mm · 4,4 - 4,8 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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