Low-Odor Bio-Based Resin Flex
Grade
also Bio-Resin / Eco Resin
Flex = flexible / elastomeric bio-based
Use for gaskets, grips, wearables and soft living hinges; low tear strength and high creep versus real rubber.
Values for the Flex condition
Other Low-Odor Bio-Based Resin grades and fills
Low-Odor Bio-Based Resin is listed in 6 conditions; see the grade overview at Low-Odor Bio-Based Resin.
Compare all 6 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
FlexThis page Flexible / elastomeric bio-based | Use for gaskets, grips, wearables and soft living hinges; low tear strength and high creep versus real rubber. | — | 6 | 130 | 30 Shore D |
As cast | For jewellery and dental investment casting: low residual ash on burn-out, soft and dimensionally fragile as a part. | 22 | 25 | 6 | 72 Shore D |
Water-washable low-odor bio-based | Use when no IPA is available; parts rinse in plain water but are slightly weaker and more moisture-sensitive. | 34 | 38 | 8 | 79 Shore D |
Impact-modified / ABS-like bio-based | Choose for snap-fits, housings and functional prototypes that must survive drops instead of shattering. | 37 | 42 | 30 | 76 Shore D |
Mineral/glass-filled stiff bio-based | Pick for thin stiff walls, jigs and fixtures where deflection and creep must be minimised; abrasive and brittle. | — | 55 | 2.5 | — |
High-temperature bio-based | For moulds, hot-air/hot-water fixtures and parts near heat sources; needs long thermal post-cure and is very brittle. | — | 55 | 2.5 | 88 Shore D |
What is Low-Odor Bio-Based Resin Flex?
Low-Odor Bio-Based Resin Flex is Low-Odor Bio-Based Resin in the Flex grade — use for gaskets, grips, wearables and soft living hinges; low tear strength and high creep versus real rubber. Low-Odor Bio-Based Resin Flex has a tensile strength of 6 MPa (0.87 ksi), weaker than 82% of polymer grades. Elongation at break is 130% and the elastic modulus is 0.02 GPa (0.0029 Msi). Low-Odor Bio-Based Resin Flex has a density of 1.09 g/cm³ (0.0394 lb/in³), lighter than 66% of polymer grades. Its glass-transition temperature is 58°C (136 °F).
Advantages
- Polishes to a fine finish — 70/100, better than 77% of polymer grades
- Low embodied carbon — 3.4 kg CO₂/kg, better than 76% of polymer grades
Limitations
- Difficult to machine — 20/100, worse than 97% of polymer grades
- Low fracture toughness — 0.8 MPa·√m (0.728 ksi·√in), worse than 92% of polymer grades
- Limited service temperature — 60°C (140 °F), worse than 87% of polymer grades
- Needs corrosion protection — 65/100, worse than 86% of polymer grades
- Low stiffness — 0.02 GPa (0.0029 Msi), worse than 75% of polymer grades
Low-Odor Bio-Based Resin Flex properties
Typical room-temperature values for Low-Odor Bio-Based Resin Flex; 16 are specific to this condition. Other listed values are Low-Odor Bio-Based Resin reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
Low-Odor Bio-Based Resin Flex has a density of 1.09 g/cm³ (0.0394 lb/in³), lighter than 66% of polymer grades. Its glass-transition temperature is 58°C (136 °F).
Mechanical13
Low-Odor Bio-Based Resin Flex has a tensile strength of 6 MPa (0.87 ksi), weaker than 82% of polymer grades. Elongation at break is 130% and the elastic modulus is 0.02 GPa (0.0029 Msi).
Thermal10
Low-Odor Bio-Based Resin Flex is rated for continuous service to 60°C (140 °F). It conducts heat at 0.17 W/m·K (0.0982 BTU/hr·ft·°F), worse than 75% of polymer grades. Thermal expansion is 90 µm/m·K (50 µin/in·°F).
Electrical6
Low-Odor Bio-Based Resin Flex is an electrical insulator with a dielectric strength of 16 kV/mm (406.4 V/mil) and a resistivity of 1×10¹¹ Ω·m.
Chemical & Environmental3
Corrosion resistance is good (65/100), worse than 86% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of Low-Odor Bio-Based Resin Flex takes about 85 MJ of energy and emits 3.4 kg of CO₂ — less than 79% of polymer grades. Typical recycled content is 0%.
Manufacturability3
Low-Odor Bio-Based Resin Flex's machinability is poor (20/100, worse than 97% of polymer grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Low-Odor Bio-Based Resin Flex
Is Low-Odor Bio-Based Resin easy to machine?
Drill, tap and wet-sand only lightly with sharp tools and low heat; the cured thermoset chips and crazes, so post-cure fully before machining.
Can Low-Odor Bio-Based Resin be welded?
Not weldable — thermoset; join with cyanoacrylate, epoxy or by bonding parts with a drop of the same uncured resin and UV-flashing the seam.
Can Low-Odor Bio-Based Resin be formed, bent or molded?
Print at 385–405 nm with ~30 °C vat temperature and 2–3 s layer exposures, then wash (water or IPA per grade) and UV post-cure 5–20 min at 40–60 °C for stated properties.
What surface finishes work on Low-Odor Bio-Based Resin?
Sand 400→2000 grit wet, then primer/acrylic clear or spray paint; a UV-blocking clear coat is essential outdoors to limit yellowing and embrittlement.
Low-Odor Bio-Based Resin 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 |
|---|---|---|
| bio-based urethane/epoxidized soybean oiplant-derived oligomer, main bio-content contributor | 20 – 45 | 32 |
| low-odor monofunctional diluent (isobornreplaces volatile odorous monomers | 10 – 30 | 20 |
| multifunctional acrylate crosslinker (TM | 5 – 20 | 12 |
| photoinitiator (TPO / TPO-L / BAPO)tuned for 385–405 nm LED | 1 – 4 | 2.5 |
| pigment, UV blocker, stabilizer, defoame | 0.3 – 3 | 1.5 |
| mineral/glass filler0 in default; 20–40 wt% in RIGID variant | ≈ 0 | 0 |
| petro urethane / polyester acrylate oligbackbone toughness and cure speed | ≥ 15 (balance) | — |
Low-Odor Bio-Based Resin Flex — frequently asked
What is Low-Odor Bio-Based Resin Flex used for?
Low-Odor Bio-Based Resin Flex is typically used for desktop hobby printing, classroom/office printing and low-VOC workshop use. In short: lowest-odor SLA resin; partly bio-based feedstock; more ductile than standard resins.
What is the tensile strength of Low-Odor Bio-Based Resin Flex?
Low-Odor Bio-Based Resin Flex has a typical tensile strength of 6 MPa (0.87 ksi) — weaker than 82% of polymer grades. Strength varies by condition: see the 6 listed tempers.
Is Low-Odor Bio-Based Resin Flex easy to machine?
Not especially — machinability is rated poor (20/100, worse than 97% of polymer grades). Drill, tap and wet-sand only lightly with sharp tools and low heat; the cured thermoset chips and crazes, so post-cure fully before machining.
Can Low-Odor Bio-Based Resin Flex be welded?
Not weldable — thermoset; join with cyanoacrylate, epoxy or by bonding parts with a drop of the same uncured resin and UV-flashing the seam.
What surface finishes work on Low-Odor Bio-Based Resin Flex?
Sand 400→2000 grit wet, then primer/acrylic clear or spray paint; a UV-blocking clear coat is essential outdoors to limit yellowing and embrittlement.
Can Low-Odor Bio-Based Resin Flex be formed, bent or molded?
Print at 385–405 nm with ~30 °C vat temperature and 2–3 s layer exposures, then wash (water or IPA per grade) and UV post-cure 5–20 min at 40–60 °C for stated properties.
What is the maximum service temperature of Low-Odor Bio-Based Resin Flex?
Low-Odor Bio-Based Resin Flex is rated for continuous use to about 60°C (140 °F), and briefly to 80°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- Plant-Based / Eco UV Resin technical data sheets — Anycubic / Elegoo / Sunlu (2024)
- SLA photopolymer material data (Standard, Tough, Clear, Flexible, High Temp, Castable) — Formlabs (2024)
- ASTM D638 / D790 / D256 / D648 test methods for plastics — ASTM International (2022)
- ISO 10993-1 Biological evaluation of medical devices — ISO (2018)
- Radiation Curing: Coatings and Printing Inks / UV-curable acrylate chemistry — Springer / SITA Technology (2010)
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.