|
Specification Reference:
ASTM C 578-92 |
PROPERTY |
UNITS
|
ASTM Test
|
TYPE I
|
TYPE VIII
|
TYPE II
|
TYPE IX
|
| Density, minimum |
lb/ft3 |
D 303 or
D 1622 |
0.90 |
1.15 |
1.35 |
1.80 |
| Density Range |
lb/ft3 |
|
0.90 - 1.14 |
1.15-1.34 |
1.35-1.79 |
1.80-2.20 |
| Thermal Conductivity- K Factor |
25F |
BTU.in/hr.ft2.°F |
C 177 or
C 518 |
0.23 |
0.22 |
0.21 |
0.20 |
| 40F |
|
|
0.24 |
0.235 |
0.22 |
0.21 |
| 75F |
|
|
0.26 |
0.255 |
0.24 |
0.23 |
| Thermal resistance- R-Value @ 1 in. |
25F |
hr.ft2.°F/BTU |
|
4.35 |
4.54 |
4.76 |
5.00 |
| 40F |
4.17 |
4.25 |
4.55 |
4.76 |
| 75F |
3.85 |
3.92 |
4.17 |
4.35 |
Strength Properties |
| Compressive 10% Deformation |
lb/in2 |
D 1621 |
10-14 |
13-18 |
15-21 |
25-33 |
| Flexural |
lb/in2 |
C 203 |
25-30 |
30-38 |
40-50 |
50-75 |
| Tensile |
lb/in2 |
D 1623 |
16-20 |
17-21 |
18-22 |
23-27 |
| Shear |
lb/in2 |
D 723 |
18-22 |
23-25 |
26-32 |
33-37 |
| Shear Modulus |
lb/in2 |
--- |
280-320 |
370-410 |
460-500 |
600-640 |
| Modulus of Elasticity |
lb/in2 |
--- |
180-220 |
250-310 |
320-360 |
460-500 |
Moisture Resistance |
| Water Vapor Transmission |
perm-in |
E 96 |
2.0-5.0 |
1.5-3.5 |
1.0-3.5 |
0.6-2.0 |
| Water Absorption (vol.) |
% |
C 272 |
< 4.0 |
< 3.0 |
< 3.0 |
< 2.0 |
| Capillarity |
--- |
--- |
none |
none |
none |
none |
| Coefficient of Thermal Expansion |
(in/in)/°F |
D 696 |
0.000035 |
0.000035 |
0.000035 |
0.000035 |
| Maximum Service Temperature |
°F |
| Long-term Exposure |
|
|
167 |
167 |
167 |
167 |
| Intermittent Exposure |
|
|
180 |
180 |
180 |
180 |
| Oxygen Index |
% |
D 2863 |
24.0 |
24.0 |
24.0 |
24.0 |
EPS Foam Typical Physical Properties