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Liquid Crystal Polymer (LCP)

LCP is a thermoplastic, further classified as a polyester plastic. It can have the highest mechanical heat stability among polyester plastics. In addition, it has the highest melting temperature and can have the highest tensile strength. It has three common variants, each represented as a separate material. The material properties section shows ranges encompassing all variants. To see the details of each variant on a separate page, follow the links in the Variant Materials section further below.

Mechanical Properties

Graph bars compare LCP to other materials. From top to bottom: polyester plastic, thermoplastics, and the entire database.

Elastic (Young's, Tensile) Modulus

11 to 24 GPa 1.6 to 3.5 x 106 psi

Elongation at Break

1.0 to 3.0 %

Flexural Modulus

9.0 to 23 GPa 1.3 to 3.3 x 106 psi

Flexural Strength

160 to 320 MPa 23 to 46 x 103 psi

Strength to Weight Ratio

120 to 150 kN-m/kg

Tensile Strength: Ultimate (UTS)

180 to 230 MPa 26 to 33 x 103 psi

Other Material Properties

Density

1.4 to 1.6 g/cm3 87 to 100 lb/ft3

Heat Deflection Temperature At 1.82 MPa (264 psi)

240 to 270 °C 470 to 520 °F

Limiting Oxygen Index (LOI)

35 %

Melting Onset (Solidus)

280 °C 540 °F

Specific Heat Capacity

1020 to 1200 J/kg-K 0.24 to 0.29 BTU/lb-°F

Followup Questions

Variant Materials

Further Reading

Liquid Crystalline Polymers, Xin-Jiu Wang and Qi-Feng Zhou, 2004

Modern Plastics Handbook, Charles A. Harper (editor), 1999

Plastics Materials, 7th ed., J. A. Brydson, 1999

SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000