| Nominal Density |
1.00# |
1.25# |
1.50# |
2.00# |
| Specification Reference:
ASTM C578-01 |
Type 1 |
Type VIII |
Type II |
Type IX |
| Property |
Units |
ASTM Test |
|
|
|
|
| Density, Minimum |
(pcf) |
C303 or D1622 |
0.90 |
1.15 |
1.35 |
1.80 |
| Thermal Conductivity |
at 25°F |
BTU/(hr.) |
C177 or C518 |
0.23 |
0.22 |
0.21 |
0.20 |
| (K factor) |
at 40°F |
(sq.ft.)(F/in.) |
|
0.24 |
0.235 |
0.22 |
0.21 |
|
at 75°F |
|
|
0.26 |
0.255 |
0.24 |
0.23 |
| Thermal Resistance |
at 25°F |
per inch |
|
4.35 |
4.54 |
4.76 |
5.00 |
| (R-Value) |
at 40°F |
thickness |
|
4.17 |
4.25 |
4.55 |
4.76 |
|
at 75°F |
|
|
3.85 |
3.92 |
4.17 |
4.35 |
| Strength Properties |
|
|
|
|
|
|
| Compressive 10% Deformation
|
psi |
D1621 |
10-14 |
13-18 |
15-21 |
25-33 |
| Flexural |
psi |
C203 |
25-30 |
30-38 |
35-50 |
50-75 |
| Tensile |
psi |
D1623 |
16-20 |
17-21 |
18-22 |
23-27 |
| Shear |
psi |
D732 |
18-22 |
23-25 |
26-32 |
33-37 |
| Shear Modulus |
psi |
- |
280 |
370 |
460 |
600 |
| Modulus of Elasticity |
psi |
- |
180 |
250 |
320 |
460 |
| Moisture Resistance |
|
|
|
|
|
|
| Water Vapor Transmission
(WVT) |
perm. in |
E96 |
2.0-5.0 |
1.5-3.5 |
1.0-3.5 |
0.6-2.0 |
| Absorption |
%(vol.) |
C272 |
less than 4.0 |
less than 3.0 |
less than 3.0 |
less than 2.0 |
| Capillarity |
- |
- |
none |
none |
none |
none |
| Coefficient of Thermal
Expansion |
in./(in.)(F) |
D696 |
0.000035 |
0.000035 |
0.000035 |
0.000035 |
| Maximum Service Temperature
|
°F |
- |
|
|
|
|
| Long Term |
|
|
167 |
167 |
167 |
167 |
| Intermittent |
|
|
180 |
180 |
180 |
180 |
| Flame Spread |
|
E84 |
Less than
25 for all densities |
| Smoke Development |
|
E84 |
Less than
450 for all densities |
| |
|
|
|
|
|
|
| STYRO-FLEX EPS products
are third-party certified by Underwriters Laboratories
(File #13418) to ensure compliance with ASTM C578
specifications. |
