MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Value from the PTB table, not verified
Almute Type A300c porous sintered metal panel, 2 inch fiberglass backing
Type A300c – Almute
PTB reference data
Original description
Almute Type A300c porous sintered metal panel, 2 inch fiberglass backing
Material properties
Manufacturer: Peer
Thickness: 2.35 inch
Wall distance: 400 mm
Backing: 2 inch fiberglass
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
1.00
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.90 | 0.90 | 1.00 | 1.00 | 1.00 | 1.00 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 2.35 inch · 1.9 lb/ft² · 400 mm | 1.00 | 0.88 | 0.92 | 0.99 | 1.09 | 1.05 | 1.06 |
Measured values as a table (1 measurement)
Access frequency bands, variants and export. Create a permanent free account
Last updated: