Flexible Polyurethane (FPU)

A firm material that has “give”

Offering high impact strength and cycle life, the FPU family consists of materials without equal in the additive industry. These materials are designed to withstand repetitive stresses, making them ideal for tough enclosures, hinging mechanisms, and friction fits. The FPU family is comparable to polypropylene.

Sample Uses:

Living Hinges

Clips & Fasteners


Strain Relief Parts



Metric Units
Tensile Strength D638M 29 ± 1 MPa
Tensile Modulus D638M 860 ± 110 MPa
Elongation at Break D638M 280 ± 15 %
Flexural Stress at 5 % Strain, No Yielding D790B 32 ± 1 MPa
Flexural Modulus (chord, 0.5-1 % strain) D790M 831 ± 36 MPa
Notched Izod (Machined), 23 °C D256 40 ± 5 J/m
Heat Deflection Temperature @ 0.455 MPa/66 psi, (°C) D648 78 °C

Full spec sheet here

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