This website uses cookies to improve service quality. You will find more information about cookies on the privacy policy page.

Epoxy Resin TK123



TK123 is a two-part low viscosity epoxy infusion resin developed for tooling up to 120°С, or CFRP parts with sustainable properties up to 90°С. The resin offers simple and flexible processing due to low viscosity at room temperature (lower than 500 mPa·s at 25°C). TK123 was developed specially for vacuum infusion molding, to produce laminates with low porosity and good mechanical performance.



Density ρ

1.14 g/cm³ at 20 °C

ASTM D792 (neat resin)


Elastic modulus E

3.56 GPa at 20 °C

ASTM D638 (neat resin)

Flexural strength σbend

161 MPa at 20 °C

ASTM D790 (neat resin)

Fracture toughness KIC

0.96 MPa·√m at 20 °C

ASTM D5045 (neat resin)

Strain energy release GIC

393 J/m² at 20 °C

ASTM D5045 (neat resin)

Tensile strength Rm

80 MPa at 20 °C

ASTM D638 (neat resin)


Glass transition temperature Tg

101 °C

ASTM E2092, dry (neat resin)

Technological properties


The key features and benefits of TK123 are: two-part resin system for vacuum infusion and RTM, wide processing window > 2 hours at 25°C, curing at room temperature, low exotherm, high mechanical properties, for tooling up to 120°C.

This material data has been provided by ITECMA.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.