Carbon, Inc.

EPU 41

Highly elastic, tear resistant, and energy returning

Highly elastic, tear resistant, and energy returning

EPU 41 is a production-scale elastomeric material that is especially well-suited for elastomeric lattices where high resiliency is needed. EPU 41 has higher resilience (energy return) and better retention of elastomeric properties than EPU 40 at temperatures > -10°C. As a production scale offering, EPU 41 is only offered in 5-L bulk packaging and requires MMD (meter, mix, and dispense) equipment for proper dispensing of the material in bulk quantities. It is comparable to commercial TPUs with a Shore A hardness of 70.


Durometer (Shore A Hardness)

20 kN/m

110 lbf/in

Tear Strength

250 %

Elongation At Break

30 %

Bayshore Resilience

-10 °C

14 °F

Glass Transition Temperature

Color Fastness

EPU 41 has excellent color fastness after UV aging.

Cold Temperature Performance

EPU 41 retains its elastomeric properties to -10 °C temperatures.


EPU 41 has passed requirements for biocompatibility according to ISO 10993-5 and -10.

Elastomeric Polyurethane Applications

These applications combine a need for high elasticity, tear resistance, and energy return, in addition to isotropy, great surface finish, and accuracy.

3D Printed Parts in Production

adidas 4D Midsole

adidas’ revolutionary 4D midsole uses an elastomeric lattice, made with EPU 41.

Carbon lattice innovation — the adidas story

fizik Adaptive Saddle

fizik’s unique Adaptive cycling saddle with an elastomeric lattice, made with EPU 41.

fizik and Carbon® Announce Partnership to Create Digitally Printed Bike Saddle: Adaptive