Williams Everlastic® Econ-O-Foam

The Econ-O-Foam is an expanded, closed-cell, plank, polyethylene foam. It is economical, lightweight, flexible, compressible, resilient, non-absorbent, inherent bond breaker.

Properties & Characteristics
Compressive Strengths

• Available in a variety of compressive strengths, and can support a wide range of loads.

Weights

• Available in densities ranging from 1.5 to 2.2 lbs/cu ft.

Chemical Resistance

• Offers excellent stability when exposed to most acids, hydrocarbons, chlorinated solvents, petroleum products, apints, varnishes, thinners and alcohols.

Temperature Range

• Has been used successfully in temperatures ranging from -40°F to 160°F without significant effect on its properties.

Water Absorption

• Virtually impermeable. The amount of water absorbed is negligible even when used in flotation applications. Also offers high resistance to transmission of water vapors, with ratings of less than .1 per inch. It contains no water-soluble constituents.

Typical Physical Properties

Typical Properties	Test Procedure	Results
Density (PCF)	ASTM D 3575 Test C	1.3-1.5 nominal
Cell Size (MM)	ASTM D 3576 Dow Modified	1.3
Compression Strength	ASTM D 3575 Test BB 5% 10% 25% 50%	3.5 5 8 15
Compression Creep	ASTM D 3575 Test BB Loaded @ specified PSI static load for 1000 hrs 75ºF 160ºF	5 @ 1.5 psi 5 @ .25 psi
Tensile Strength (psi)	ASTM D 3575 Test E	50
Tensile Elongation (%)	ASTM D 3575 Test E	60
Tear Strength (lb/in)	ASTM D 3575 Test D	15
Flexural Modulous (psi)	ASTM D 790	300
Buoyancy (PFC)	ASTM D 3575 Test AA	55-60
Thermal Conductivity (B1U-in/hr ftº)	ASTM D 3575 Test EE Method B	0.4
Thermal Stability (% shrinkage)	ASTM D 3575 Test F Conditioned @ specific temp. with no load 24 hrs 48 hrs	negative 1.0 @ 165ºF negative 2.4 @ 165ºF