Composite materials

Composite materials or thermosets differ from thermoplastics with regard to their manufacturing process and machining properties.

In contrast to thermoplastics, thermosets cannot be remoulded using heat as assistance. These include various laminates and Bakelites such as EP-GC 203/G-11 (glass‑fibre‑reinforced woven laminate), EP GC 204/FR-4 (glass‑fibre‑reinforced epoxy laminate), UP GM203/GPO-3 (glass mat laminate based on polyester resin), PF and ETRONIT AS (cotton phenolic laminate and paper Bakelite), CEM-1, DURAPOL, RICOCEL and DUROSTONE (high-pressure laminates) and ALUCORE®, ALUCOBOND®PE, ALUCOBOND®plus, ALUCOBOND®A2, KAPA®tech and HYLITE® (aluminium sandwich boards).

Read more about specific composite materials below.

Physical properties

Specific gravity

Water absorption, 24/96 h (23 °C)



Food safety

Mechanical properties

Modulus of elasticity

Tensile strength

Elongation at break

Tensile strength at break

Flexural modulus

Flexural strength

Compressive modulus

Impact strength (Charpy)

Toughness (ball pressure)


Coefficient of friction (against steel)

Thermal properties

Operating temperature (instantaneous)

Operating temperature (continuous)

Operating temperature (minimum)

Thermal expansion coefficient, 23–60 °C

Thermal expansion coefficient, 23–100 °C

Specific heat capacity

Thermal conductivity

Electrical properties

Surface resistivity


Dielectric strength

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