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Cornerstone Companies LLC
P.O. Box 241164
Charlotte, N.C. 28224-1164
(704) 553-0530
(704) 553-0531 Fax
(800)
456-9371
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TECHNICAL INFORMATION
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Expanded
Polystyrene |
| Description |
Test |
Method Results |
| Density, Minimum
|
ASTM D303 |
1.15 |
| Density, Range |
ASTM 1622
|
1.15 – 1.34 |
| Thermal
Conductivity @25F BTU |
ASTM C177
|
.22 |
| @45F (sq ft) |
|
.235 |
| @75F (F/in)
|
|
255 |
| Compression
Strength @ 10% Deformation |
ASTM D1621 |
13-18 |
| Flexural Strength
psi |
ASTM C203
|
30-38 |
| Tensile Strength
psi |
ASTM D1623
|
18-22 |
| Shear psi
|
ASTM D723 |
23-25 |
| Water absorption
by immersion |
ASTM C272 |
Less than 4% |
| Thermal Expansion,
in/(in.)(F) |
ASTM D696 |
0.000035 |
| Oxygen Index, min,
volume % |
ASTM C578
|
24% |
| Flame Spread
|
ASTM E-84 |
20 |
| Smoke developed
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ASTM E-84 |
150-300 |
| Termite Resistance |
ASTM D3345(mod) |
Passed |
| Carpenter Ant
Resistance |
ASTM D3345(mod) |
Passed |
|
FINISH |
| Description |
Test Method |
Results |
| Freeze/Thaw |
ASTM C-67 |
No cracking,
checking, crazing, erosion
or other
deleterious effects. |
| Freeze/Thaw |
ICBO AC24 |
No cracking,
checking, crazing, delaminating,
erosion, or other
deleterious effects. |
| Water Resistance |
ASTM D2247-94
|
No cracking,
checking, crazing, blistering,
erosion, or other
deleterious effects. |
| Humidity
Resistance |
ASTM D-2247
|
No deleterious
change in surface. |
| Mold Resistance |
ASTM D3273-94 |
No growth of mold
observed. |
| Abrasion
Resistance |
ASTM D-968-93 |
No cracking,
checking or loss of film. |
| Salt Spray |
ASTM B117-95 |
No cracking,
crazing, blistering, erosion or
deleterious
effects. |
| Accelerated
Weathering |
ASTM G-53 |
No surface
changes such as cracking, checking,
crazing and
erosion. |
| Accelerated
Weathering |
ASTM G23-93
|
No surface changes
such as cracking, checking,
crazing and
erosion. |
| Fade Resistance |
ASTM
D-1729-89 |
Passed |
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