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Polyisocyanurate Physical Properties
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| Physical Properties1 |
ASTM Method |
English Units2 |
Metric Units2 |
| Density3 |
D 1622 |
2.1 |
lb/ft3 |
33.64 |
kg/m3 |
| Compressive Strength |
D 1621 |
|
|
|
|
| |
Parallel to Rise (Thickness) |
|
26 |
lb/in2 |
179 |
kPa |
| |
Perpendicular to Rise (Width) |
|
29 |
lb/in2 |
200 |
kPa |
| Shear Strength: Parallel and Perpendicular |
C 273 |
27 |
lb/in2 |
187 |
kPa |
| Shear Modulus |
C 273 |
346 |
lb/in2 |
2386 |
kPa |
| Tensile Strength: Parallel and Perpendicular |
D 1623 |
33 |
lb/in2 |
228 |
kPa |
| Flexural Strength: Parallel and Perpendicular |
C 203 |
54 |
lb/in2 |
372 |
kPa |
| Flexural Modulus |
C 203 |
864 |
lb/in2 |
5957 |
kPa |
| Closed Cell Content |
D 2856 |
>95 |
% |
>95 |
% |
| Buoyancy |
|
TBD |
lb/ft3 |
TBD |
kg/m3 |
| Water Absorption |
C 272 |
0.24 |
% by volume |
0.24 |
% by volume |
| Water Vapor Permeance |
E 96 |
2.33 |
perm-inch |
3.40 |
ng/Pa · s · m |
| Service Temperature3 |
|
-297 to +300 |
°F |
-183 to +149 |
°C |
| Dimensional Stability4,5 |
D 2126 |
|
|
|
|
| |
@ -40°F (-40°C), 7 days: Length |
|
< +0.1 |
% Change |
< +0.1 |
% Change |
| |
Volume |
|
< +0.1 |
% Change |
< +0.1 |
% Change |
| |
@ 158°F (70°C)/97% RH, 7 days: Length |
|
<+1.0 |
% Change |
<+1.0 |
% Change |
| |
Volume |
|
<+2.0 |
% Change |
<+2.0 |
% Change |
| |
@ 212°F (100°C), 7 days: Length |
|
<+0.6 |
% Change |
<+0.6 |
% Change |
| |
Volume |
|
<+1.0 |
% Change |
<+1.0 |
% Change |
| Thermal Conductivity / Resistance |
C 518 |
|
|
|
|
| |
K-Factor Initial (after 10 days) |
C 518 |
0.15 Initial |
|
0.022 Initial |
W /m · °C |
| |
K-Factor Aged (after 6 months) |
C 518 |
0.18 |
BTU · in/hr · ft2· °F |
0.026 |
W /m · °C |
| |
R-Factor Aged |
C 518 |
5.6 |
hr · ft2 · °F/BTU |
0.99 |
m2 · °C/W |
| Surface Burning Characteristics6 |
|
UL Rating |
|
FM Rating |
|
| |
Flame Spread @ 4" (10 cm) |
E 84 |
25 |
|
25 |
|
| |
Smoke Development @ 4" (10cm) |
E 85 |
195 |
|
130 |
|
| |
Hot Surface |
C 411 |
Pass |
|
Pass |
|
|
|
|
Properties are provided courtesy of Dyplast Products, LLC, for their ISO-C1 product at 2 lb/ft3 density.
1. All properties are measured at 70°F – 75°+ unless otherwise indicated and all test values from independent certified testing laboratories. |
| 2. These are nominal values obtained from representative product samples, and are subject to normal manufacturing variances. |
| 3. Average value through the foam cross section of tested sample. |
|
| 4. Above 300°F, discoloration and charring will occur, resulting in an increased K-Factor in the discolored area. ISO-C1 will not melt, however, and will maintain integrity. |
|
| 5. Frequent and severe thermal cycling can produce dimensional changes significantly greater than those listed here. Special design considerations must be made in systems subject to severe cycling. |
| 6. This numerical flame spread data is not intended to reflect hazards presented by this or any other material under actual fire conditions. |
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