Product General and Technical Information
Date: 12/10/2014
Name: Expanded Polystyrene Foam
General Information
Expanded Polystyrene (EPS) has multiple densities and a range of applications, including arts and crafts, insulation, and packaging.

Property
(ASTM C 578-92 (all))
1.0 LB 2.0 LB 3.0 LB
Density (LB/Cubic Ft.) 1.02 2.00 3.00
Thermal Conductivity
BTU - in/h - ft. sq. - °F (W/mK)
@ 25°F / @ 40°F / @ 75°F
0.23 / 0.24 / 0.26 0.20 / 0.21 / 0.23 0.17 / 0.18 / 0.20
Thermal Resistance
(R-Value @ 1" Thick)
@ 25°F / @ 40°F / @ 75°F
4.35 / 4.17 / 3.85 5.00 / 4.76 / 4.35 5.65 / 5.35 / 4.85
Compressive 10% Deformation (PSI) 12 29 46
Flexural (PSI) 27 63 99
Tensile (PSI) 18 26 34
Shear (PSI) 20 36 52
Shear Modulus (PSI) 300 620 940
Modulus of Elasticity (PSI) 200 480 760
WVT (perm. in) 3.5 1.3 0.7
Absorption (%) vol. Max. 4.0 2.0 1.0
Capillarity None None None
Coefficient of Thermal Expansion in./(in.)(°F) 0.000035 0.000035 0.000035
Maximum Service Temperature (°F)
Long-term / Short-term
167 / 180 167 / 180 167 / 180
Oxygen Index (%) 24.0 24.0 24.0
Contains Fire Retardant Additives Yes Yes Yes

All values reported are typical values. We cannot guarantee the applicability or the accuracy of this information or the suitability of the product for any particular purpose. This product is sold without warranty, expressed or implied. (Unless stated otherwise.) Buyer assumes all responsibility for loss or damage arising from the handling and use of this product, whether done in accordance with directions or not. Statements concerning the possible use of this product are not intended as recommendation to use this product in the infringement of any patent.

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