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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