Vero Flex
Grade
Flex = veroFlex tough/flexural rigid resin
Select where higher strain-to-failure and hinge-like flexural fatigue are needed rather than maximum stiffness, e.g. printed eyewear frames.
Values for the Flex condition
Other Vero grades and fills
Vero is listed in 3 conditions; see the grade overview at Vero.
Compare all 3 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
FlexThis page VeroFlex tough/flexural rigid resin | Select where higher strain-to-failure and hinge-like flexural fatigue are needed rather than maximum stiffness, e.g. printed eyewear frames. | 40 | 50 | 30 | 80 Shore D |
VeroDent / VeroGlaze dental model resins | Choose for dental stone-look models, try-ins and veneer mock-ups needing shade-matched opaque colour and fine detail. | 50 | 57 | 15 | 85 Shore D |
Vivid ColorsDefault opaque colour Vero (Cyan/Magenta/Yellow/Black/White, VeroVivid family) | Default choice for opaque, full-colour appearance models and multi-material colour blends. | — | 57 | 17 | 84 Shore D |
What is Vero Flex?
Vero Flex is Vero in the Flex grade — select where higher strain-to-failure and hinge-like flexural fatigue are needed rather than maximum stiffness, e.g. printed eyewear frames. Vero Flex has a tensile strength of 50 MPa (7.25 ksi), stronger than 54% of polymer grades. Elongation at break is 30% and the elastic modulus is 2 GPa (0.29 Msi). Vero Flex has a density of 1.17 g/cm³ (0.0423 lb/in³), lighter than 54% of polymer grades. Its glass-transition temperature is 53°C (127 °F). Vivid Colors is the default condition FabDigit quotes; Flex is available on request or by drawing note.
Advantages
- Polishes to a fine finish — 70/100, better than 77% of polymer grades
Limitations
- Limited service temperature — 45°C (113 °F), worse than 98% of polymer grades
- Needs corrosion protection — 55/100, worse than 94% of polymer grades
- Difficult to weld — 5/100, worse than 89% of polymer grades
- Degrades in UV without stabilisers — 20/100, worse than 88% of polymer grades
- Absorbs moisture — dry before molding — 1.3%, worse than 88% of polymer grades
Vero Flex properties
Typical room-temperature values for Vero Flex; 24 are specific to this condition. Other listed values are Vero reference data and may not represent this condition. Bars are the position among polymer grades.
Physical3
Vero Flex has a density of 1.17 g/cm³ (0.0423 lb/in³), lighter than 54% of polymer grades. Its glass-transition temperature is 53°C (127 °F).
Mechanical9
Vero Flex has a tensile strength of 50 MPa (7.25 ksi), stronger than 54% of polymer grades. Elongation at break is 30% and the elastic modulus is 2 GPa (0.29 Msi).
Thermal6
Vero Flex is rated for continuous service to 45°C (113 °F). It conducts heat at 0.2 W/m·K (0.116 BTU/hr·ft·°F), worse than 56% of polymer grades. Thermal expansion is 80 µm/m·K (44.4 µin/in·°F).
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 94% of polymer grades. UV resistance is poor.
Sustainability3
Producing a kilogram of Vero Flex takes about 115 MJ of energy and emits 6.5 kg of CO₂ — more than 70% of polymer grades. Typical recycled content is 0%.
Manufacturability4
Vero Flex's machinability is good (60/100, better than 51% of polymer grades); weldability not recommended (5/100); formability poor (15/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Vero Flex
Is Vero easy to machine?
Drills, taps and sands cleanly at low speed with sharp tools, but is notch-sensitive — avoid heavy cuts and heat build-up that softens material above ~50 °C.
Can Vero be welded?
Thermoset and non-weldable; join with cyanoacrylate, epoxy or UV-cure acrylic adhesives.
Can Vero be formed, bent or molded?
Not moldable or thermoformable — geometry is set by PolyJet jetting with SUP support; wall thicknesses down to ~0.6 mm and 14–32 µm layers are routine, and unsupported thin features should be oriented to limit warping.
What surface finishes work on Vero?
Support removal by water-jet/caustic soak, then sand and clear-lacquer or paint; Clear grades reach near-optical transparency after wet sanding plus clear coat, and a UV-blocking coating is recommended to slow yellowing.
Vero chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| acrylate monomers (isobornyl acrylate, areactive diluent/monomer fraction | 30 – 60 | 45 |
| acrylic/urethane-acrylate oligomerscrosslinking backbone | 20 – 45 | 35 |
| epoxy/acrylate crosslinker | 5 – 20 | 12 |
| photoinitiatorUV free-radical initiator | 0.5 – 3 | 1.5 |
| pigments / inorganic filler0 for Clear; ash content 0.2–0.4 % in opaque grades | 0 – 4 | 1.5 |
Vero Flex — frequently asked
What is Vero Flex used for?
Vero Flex is typically used for visual and appearance models, multi-colour concept prototypes, assembly and fit verification parts, transparent flow-channel and fluid-path models, dental models and surgical planning models and rigid substrates for Agilus overmould prints. In short: multi-color PolyJet resin.
What is the tensile strength of Vero Flex?
Vero Flex has a typical tensile strength of 50 MPa (7.25 ksi) — stronger than 54% of polymer grades. Strength varies by condition: see the 3 listed tempers.
Is Vero Flex easy to machine?
Reasonably — machinability is rated good (60/100, better than 51% of polymer grades). Drills, taps and sands cleanly at low speed with sharp tools, but is notch-sensitive — avoid heavy cuts and heat build-up that softens material above ~50 °C.
Can Vero Flex be welded?
Not readily — weldability is rated not recommended (5/100). Thermoset and non-weldable; join with cyanoacrylate, epoxy or UV-cure acrylic adhesives.
What surface finishes work on Vero Flex?
Support removal by water-jet/caustic soak, then sand and clear-lacquer or paint; Clear grades reach near-optical transparency after wet sanding plus clear coat, and a UV-blocking coating is recommended to slow yellowing.
Can Vero Flex be formed, bent or molded?
Not moldable or thermoformable — geometry is set by PolyJet jetting with SUP support; wall thicknesses down to ~0.6 mm and 14–32 µm layers are routine, and unsupported thin features should be oriented to limit warping.
What is the maximum service temperature of Vero Flex?
Vero Flex is rated for continuous use to about 45°C (113 °F), and briefly to 55°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Vero Vivid Colors and Vero Dental?
Vivid Colors is the default condition — default choice for opaque, full-colour appearance models and multi-material colour blends. Dental: choose for dental stone-look models, try-ins and veneer mock-ups needing shade-matched opaque colour and fine detail.
Can FabDigit make parts in Vero Flex?
Yes — Vero Flex is available for 3D printing with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- PolyJet Rigid Opaque / Vero material datasheet — Stratasys (2023)
- VeroClear (RGD810) & VeroUltraClear transparent material data — Stratasys (2022)
- MED610 / VeroDent / VeroGlaze biocompatible & dental material data — Stratasys (2022)
- ASTM D638 / D790 / D256 / D648 / D570 test methods — ASTM International (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.