ASTM D787 Grade 7 Ethyl Cellulose
Grade 7 EC is a grade of Ethyl Cellulose. The graph bars on the material properties cards below compare grade 7 EC to: cellulosic plastics (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Impact Strength: Notched Izod
130 J/m 2.5 ft-lb/in
Rockwell R Hardness
120
Tensile Strength: Ultimate (UTS)
31 MPa 4.6 x 103 psi
Thermal Properties
Heat Deflection Temperature At 1.82 MPa (264 psi)
75 °C 170 °F
Heat Deflection Temperature At 455 kPa (66 psi)
92 °C 200 °F
Otherwise Unclassified Properties
Density
1.1 g/cm3 70 lb/ft3
Water Absorption After 24 Hours
1.1 %
Common Calculations
Strength to Weight: Axial
7.8 points
Strength to Weight: Bending
20 points
Followup Questions
Further Reading
ASTM D787: Standard Specification for Ethyl Cellulose Molding and Extrusion Compounds