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ASTM D704 Type 3 Cotton-Melamine Compound

ASTM D704 type 3 is a grade of melamine moulding compound. The graph bars on the material properties cards below compare ASTM D704 type 3 to other thermoset plastics (top) 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.

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi)

180 °C 360 °F

Solidification (Pattern Maker's) Shrinkage

0.43 %

Other Material Properties


1.4 g/cm3 86 lb/ft3

Dielectric Strength (Breakdown Potential)

4.4 kV/mm 0.17 V/mil

Flexural Strength

94 MPa 14 x 103 psi

Water Absorption After 24 Hours

0.53 %

Followup Questions

Further Reading

ASTM D704: Standard Specification for Melamine-Formaldehyde Molding Compounds

Thermosets: Structure, Properties and Applications, Qipeng Guo (editor), 2012

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015