Durable Resin · grade
Durable Resin Tough
Properties of the Tough condition, compared with the other Durable Resin grades.
Pick when the part needs both stiffness and impact resistance — housings, jigs, brackets, threaded/assembled prototypes replacing ABS.
What is Durable Resin Tough?
Durable Resin Tough is Durable Resin in the Tough grade — pick when the part needs both stiffness and impact resistance — housings, jigs, brackets, threaded/assembled prototypes replacing ABS. Durable Resin Tough has a yield strength of 42 MPa (6.09 ksi) and a tensile strength of 46 MPa (6.67 ksi) — weaker than 65% of polymer grades. Elongation at break is 48% and the elastic modulus is 2.2 GPa (0.319 Msi). Durable Resin Tough has a density of 1.12 g/cm³ (0.0405 lb/in³), lighter than 63% of polymer grades. Its glass-transition temperature is 62°C (144 °F). Standard is the default condition FabDigit quotes; Tough is available on request or by drawing note.
Limitations
- Limited service temperature — 55°C (131 °F), worse than 91% of polymer grades
- Difficult to weld — 5/100, worse than 90% of polymer grades
- Limited formability — 15/100, worse than 80% of polymer grades
- Degrades in UV without stabilisers — 25/100, worse than 76% of polymer grades
- Absorbs moisture — dry before molding — 0.6%, worse than 76% of polymer grades
Durable Resin Tough properties
Typical room-temperature values for Durable Resin Tough — 14 properties are specific to this condition; the rest are grade-level values shared by every Durable Resin grade. Each bar shows where the value sits among the polymer grades in FabDigit's library — further right is higher.
Physical5
Durable Resin Tough has a density of 1.12 g/cm³ (0.0405 lb/in³), lighter than 63% of polymer grades. Its glass-transition temperature is 62°C (144 °F).
Mechanical11
Durable Resin Tough has a yield strength of 42 MPa (6.09 ksi) and a tensile strength of 46 MPa (6.67 ksi) — weaker than 65% of polymer grades. Elongation at break is 48% and the elastic modulus is 2.2 GPa (0.319 Msi).
Thermal7
Durable Resin Tough is rated for continuous service to 55°C (131 °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 130 µm/m·K (72.2 µin/in·°F).
Electrical4
Durable Resin Tough is an electrical insulator with a dielectric strength of 16 kV/mm (406.4 V/mil) and a resistivity of 1×10¹² Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (80/100), worse than 55% of polymer grades. UV resistance is poor.
Sustainability3
Producing a kilogram of Durable Resin Tough takes about 130 MJ of energy and emits 5.5 kg of CO₂ — more than 78% of polymer grades. Typical recycled content is 0%.
Manufacturability4
Durable Resin Tough'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. Certified mill or lot data ships with every FabDigit order on request.
Other Durable Resin grades and fills
Durable Resin is also supplied in 3 other conditions. The full side-by-side table is on the Durable Resin overview.
- StandardDefaultPick for living hinges, snap fits, low-friction bushings and squeeze/press parts where high elongation matters more than stiffness.28 MPa tensile
- ToughPick when the part needs both stiffness and impact resistance — housings, jigs, brackets, threaded/assembled prototypes replacing ABS.42 MPa yield · 80 Shore D
- Tough-1500Pick for parts that must flex repeatedly and spring back — clips, cable ties, panels with press-fit features — a stiffness step between PP-like and ABS-like.33 MPa tensile
Working with Durable Resin Tough
Is Durable Resin easy to machine?
Machinable with sharp tools, high speed and low feed, but the soft matrix smears — prefer drilling/reaming to milling and avoid coolant soak.
Can Durable Resin be welded?
Thermoset — cannot be heat welded; join with cyanoacrylate, UV-cure acrylate or two-part epoxy after light abrasion.
Can Durable Resin be formed, bent or molded?
Print at 50–100 µm layers, orient living hinges so bending is across layers, then wash briefly in IPA (<10–15 min) and heat post-cure (typically 60–70 °C UV) to reach datasheet properties.
What surface finishes work on Durable Resin?
Sands and vapor-free polishes to a satin finish; primer + flexible paint or dyeing works, but keep parts out of sunlight or clear-coat with a UV-blocking topcoat.
Durable 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 |
|---|---|---|
| urethane acrylate / aliphatic acrylate oflexible backbone giving the PP-like high elongation | 40 – 70 | 55 |
| photoinitiator (acylphosphine oxide type | 0.5 – 3 | 1.5 |
| pigments, UV blockers, additives | 0.1 – 3 | 1 |
| acrylate & methacrylate reactive monomercontrols viscosity, crosslink density and modulus | ≥ 25 (balance) | — |
Durable Resin Tough — frequently asked
What is Durable Resin Tough used for?
Durable Resin Tough is typically used for living hinges, snap fits and clips, PP-like functional prototypes, low-friction wear pads and bushing prototypes, press-fit enclosure lids and ball-and-socket joint prototypes. In short: wear-resistant flexible resin.
What is the yield strength of Durable Resin Tough?
Durable Resin Tough has a typical yield strength of 42 MPa (6.09 ksi) and a tensile strength of 46 MPa (6.67 ksi) — weaker than 65% of polymer grades. Strength varies by condition: see the 4 listed tempers.
Is Durable Resin Tough easy to machine?
Reasonably — machinability is rated good (60/100, better than 51% of polymer grades). Machinable with sharp tools, high speed and low feed, but the soft matrix smears — prefer drilling/reaming to milling and avoid coolant soak.
Can Durable Resin Tough be welded?
Not readily — weldability is rated not recommended (5/100). Thermoset — cannot be heat welded; join with cyanoacrylate, UV-cure acrylate or two-part epoxy after light abrasion.
What surface finishes work on Durable Resin Tough?
Sands and vapor-free polishes to a satin finish; primer + flexible paint or dyeing works, but keep parts out of sunlight or clear-coat with a UV-blocking topcoat.
Can Durable Resin Tough be formed, bent or molded?
Print at 50–100 µm layers, orient living hinges so bending is across layers, then wash briefly in IPA (<10–15 min) and heat post-cure (typically 60–70 °C UV) to reach datasheet properties.
What is the maximum service temperature of Durable Resin Tough?
Durable Resin Tough is rated for continuous use to about 55°C (131 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Durable Resin Standard and Durable Resin Tough?
Standard is the default condition — pick for living hinges, snap fits, low-friction bushings and squeeze/press parts where high elongation matters more than stiffness. Tough: pick when the part needs both stiffness and impact resistance — housings, jigs, brackets, threaded/assembled prototypes replacing ABS. Yield strength is 42 MPa in Standard versus 42 MPa in Tough.
Can FabDigit make parts in Durable Resin Tough?
Yes — Durable Resin Tough is available for injection molding and 3D printing with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- Durable Resin / Tough 1500 & Tough 2000 Resin material data sheets (SLA photopolymers) — Formlabs (2023)
- ASTM D638 / D790 / D256 / D648 test methods for plastics — ASTM International (2022)
- Photopolymer (acrylate thermoset) generic property ranges — CAMPUS / MatWeb-class polymer data (2024)
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.