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Thermal properties of selected Formlabs SLA resins

Thermal properties of selected Formlabs SLA resins

Below is data about the thermal properties of selected Formlabs SLA resins. Use this data along with the information in Choosing the right material and the technical data sheet (TDS) for your selected material to pick a resin and evaluate your printed parts. If data for your material is not available, choose the closest comparable material and interpolate or extrapolate as necessary. For other requests, reach out to Formlabs Support or your sales representative.

Thermal conductivity

Available thermal conductivity data is listed in the table below:

ResinThermal Conductivity (W/m-K)RSD (%)
Rigid 10K Resin V10.6210.3
Tough 1500 Resin V10.3110.66
Tough 2000 Resin V10.2700.80
ESD Resin V10.3050.75
Clear Resin V20.28
Clear Resin V50.54

Metals have average conductivities of >30 W/m-K. In comparison, unfilled resins (excluding Rigid Resins) have thermal conductivities between 0.25–0.35 W/m-K, classifying them as medium-low conductors of heat. These resins are better insulators than metals but less effective than materials that specialize in insulation.

Specific heat and heat capacity

Formlabs has measured the heat capacity of a selection of resins using differential scanning calorimetry (DSC). The following table shows the heat capacity at 25 °C.

Resin typeHeat capacity at 25 °C (J/gK)State
Black Resin V51.9Postcured
Clear Resin V51.8Postcured
Grey Resin V51.8Postcured
White Resin V51.5Postcured
Fast Model Resin4.3Postcured
Tough 1500 Resin V22.0Postcured
Tough 2000 Resin2.0Postcured
Durable Resin V2.12.1Postcured
Rigid 4000 Resin1.9Postcured
Rigid 10K Resin1.7Postcured
High Temp Resin V21.7Postcured

Wärmeausdehnungskoeffizient (Coefficient of thermal expansion, CTE)

ASTM-tested properties appear in the datasheets for our resins. There are many other properties that Formlabs has not officially tested.

Resin TypeCTE (um/m°C)Temperature RangeState
Clear Resin V4122.40–150 °CPostcured
High Temp Resin V187.50–150 °CPostcured
Durable Resin V1145.123–50 °CPostcured
Castable Resin V2188.00–150 °CPostcured
Rigid 10K Resin46.00–150 °CPostcured
Clear Resin V5114.1-30–140 °CPostcured

Glasübergangstemperatur

Zur Bestimmung der Glasübergangstemperatur wurden 3 × 12 × 60 mm große Proben mit Hilfe der dynamisch-mechanischen Analyse (DMA) getestet.

Resin typeGlass Transition Temperature (°C)
Black Resin V592 °C
Clear Resin V596 °C
Grey Resin V5104 °C
White Resin V5105 °C
Fast Model Resin94 °C
Tough 1500 Resin V2116 °C
Tough 2000 Resin97 °C
Durable Resin V2.177 °C
Rigid 4000 Resin117 °C
Rigid 10K Resin147 °C
High Temp Resin V2188 °C
Flame Retardant Resin129 °C