willtec® specifications
willtec® lightweight, open-cell acoustic material meets the following regulations. Where not indicated, the following tests were performed on 1" thick material.
| FM VSS 302 | Passes (automotive) |
| UTAC (Union Technique de l'Automobile du Motorcycle et du Cycle): | Passes (Category 1, buses) |
| UL Code 94, electronics: | HBF: Passes HF1: Passes VO: Passes |
| ASTM E B4, Steiner Tunnel Test | Flame spread : 5 Smoke Density: 45 Fuel Contribution: 0 |
| UL 1715 | Passes |
| FAR 25.853, aviation | Passes |
| NYC DOS# 0 500-970317-4001 | |
| ASTM C 177 Thermal Conductivity | K Factor@50 F: 0.24 R Value: 4.2 |
| ASTM D 3574-77 | Density: 0.7 lb/cuft Tensile Strength: 8 psi Tear Strength: 0.3 lbs/in |
| UL 181 Microbial Growth | Passes |
| ASTM G21 Fungus Resistance | Passes |
| Boeing DSS 9739 Toxic Gas Generation | Pass |
Sound absorption coefficients* of SONEX products – ASTM C 423-90a
SONEX Panels
125Hz
250Hz
500Hz
1KHz
2KHz
4KHz
NRC
SONEXone 2"
0.11
0.33
0.85
1.05
1.09
1.06
0.85
SONEXvalueline 1-1/2"
0.08
0.29
0.73
0.94
0.97
0.89
0.75
SONEXpyramid 2"
0.07
0.32
0.78
1
0.97
1.08
0.8
SONEXmini 1"
0.11
0.17
0.4
0.72
0.76
0.91
0.5
125Hz
250Hz
500Hz
1KHz
2KHz
4KHz
STC
SONEX Specialties
SONEXtextile 2"
0.19
0.73
1.2
1.17
1.08
1.28
1.05
SONEX Wedges
SONEXsuper 6"
0.18
0.86
1.22
1.24
1.14
1.2
1.1
SONEX Prospec
SONEXprospec foam
0
0.26
1.01
0.82
0.68
0.6
0.7
SONEX composite
0.13
0.6
0.81
0.97
1
0.9
0.85
SONEX Curtains
SONEXcurtain BS
0.12
0.59
0.9
0.99
0.92
0.74
0.85
SONEXcurtain BB
0.12
0.52
0.84
0.98
0.9
0.68
0.8
SONEXcurtain QA-1
0.09
0.28
0.74
0.58
0.38
0.25
0.5
SONEXcurtain QA-2
0.14
0.55
0.96
0.73
0.36
0.25
0.65
SONEX Baffles (in sabins)
4 Freq. Avg
SONEXvalueline
1
5.4
10.8
16.3
18.7
24
12.8
SONEXwet
1.9
5
10.2
15.5
16.3
19.5
11.75
| Sound transmission data of SONEX products – ASTM E 90-90 | |||||||
| 125Hz | 250Hz | 500Hz | 1KHz | 2KHz | 4KHz | STC | |
| SONEX Curtains | |||||||
| SONEXcurtains BB-1 | 15 | 18 | 22 | 30 | 42 | 48 | 27 |
| SONEX curtains BS1 | 15 | 19 | 21 | 24 | 42 | 48 | 25 |
| SONEX Prospec | |||||||
| SONEXprospec barrier | 13 | 17 | 21 | 28 | 33 | 40 | 26 |
| SONEXprospec composite | 17 | 22 | 20 | 32 | 31 | 43 | 28 |
SONEX willtec® colors and finishes
Natural
White
SONEXcolortec™
Charcoal
Hypalon †
White
Black
Gray
Painted †
Charcoal
Gray
Beige
Brown
† Custom colors also available. SONEXclean is available in various surfaces and colors