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Home » Resources » Extruded Polystyrene (XEPS) Data Sheet

Extruded Polystyrene Data Sheet

TYPICAL PHYSICAL PROPERTIES OF EXTRUDED POLYSTYRENE

XEPS Properties
Property Units Specification reference: ASTM C 578-95
Type X Type IV Type VI Type VII Type V
Density      
Minimum lb/ft3 1.30 1.60 1.80 2.20 3.00
Thermal Resistance (R-Value)      
at 40°F at 1" thickness 5.4 5.4 5.4 5.4 5.4
at 75°F at 1" thickness 5.0 5.0 5.0 5.0 5.0
Strength Properties      
Compressive 10% Deformation psi 15 25 40 60 100
Flexural psi 40 50 60 75 100
Moisture Resistance      
WVT perm.in 1.1 1.1 1.1 1.1 1.1
Absorption (vol.) % 0.3 0.3 0.3 0.3 0.3
Oxygen Index % 24 24 24 24 24
Dimensional Stability % Change max
2.0
max
2.0
max
2.0
max
2.0
max
2.0