Durable Resin
also PP-Like Resin, PP-Like / Durable Resin
Durable Resin (PP-like) is a UV-curable acrylate photopolymer for SLA and DLP printing under GB/T 35022, formulated as a low-friction, semi-flexible network that approximates the fatigue behaviour and slight flexibility of polypropylene.
Durable Resin grades and fills
Durable Resin is supplied in 3 conditions, soft to hard.
Compare all 3 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Green (as-printed, not post-cured) | Reference state only — use for fit checks; strength and stiffness are well below post-cured values and creep is high. | 13 | 18 | 49 | 57 Shore D |
Compliant tough grade | Pick 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 | 51 | 75 Shore D | |
ABS-like tough grade | Pick when the part needs both stiffness and impact resistance — housings, jigs, brackets, threaded/assembled prototypes replacing ABS. | 42 | 46 | 48 | 80 Shore D |
Supply forms, finishes and certifications
Ways Durable Resin is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
StandardDefault | PP-like Durable Resin | Standard supply |
What is Durable Resin?
Durable Resin (PP-like) is a UV-curable acrylate photopolymer for SLA and DLP printing under GB/T 35022, formulated as a low-friction, semi-flexible network that approximates the fatigue behaviour and slight flexibility of polypropylene. Engineers select it for repeated-flex features — 55% elongation, 28 MPa tensile strength, 1 GPa modulus and Shore D 70 in the standard condition, with Tough, Tough-1500 and GREEN variants on file. The trade-offs are low stiffness and a maximum service temperature around 40 °C, plus UV ageing; where higher strength and heat resistance are needed, move to a standard or High Temp resin. Durable Resin has a density of 1.12 g/cm³ (0.0405 lb/in³), lighter than 64% of polymer grades. Its glass-transition temperature is 45°C (113 °F). Durable Resin has a yield strength of 22 MPa (3.19 ksi) and a tensile strength of 28 MPa (4.06 ksi) — weaker than 78% of polymer grades. Elongation at break is 55% and the elastic modulus is 1 GPa (0.145 Msi).
What is Durable Resin used for?
- Living hinges
- Snap fits and clips
- PP-like functional prototypes
- Low-friction wear pads and bushing prototypes
- Press-fit enclosure lids
- Ball-and-socket joint prototypes
- Flexible tubing and duct mock-ups
Limitations
- Limited service temperature — 40°C (104 °F), worse than 99% of polymer grades
- Difficult to weld — 5/100, worse than 89% of polymer grades
- Limited formability — 15/100, worse than 79% of polymer grades
- Low strength — 22 MPa (3.19 ksi), worse than 78% of polymer grades
- Degrades in UV without stabilisers — 25/100, worse than 76% of polymer grades
Durable Resin properties
Typical room-temperature values in the Standard condition; bars are the position among polymer grades.
Physical5
Durable Resin has a density of 1.12 g/cm³ (0.0405 lb/in³), lighter than 64% of polymer grades. Its glass-transition temperature is 45°C (113 °F).
Mechanical11
Durable Resin has a yield strength of 22 MPa (3.19 ksi) and a tensile strength of 28 MPa (4.06 ksi) — weaker than 78% of polymer grades. Elongation at break is 55% and the elastic modulus is 1 GPa (0.145 Msi).
Thermal7
Durable Resin is rated for continuous service to 40°C (104 °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 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 52% of polymer grades. UV resistance is poor.
Sustainability3
Producing a kilogram of Durable Resin takes about 130 MJ of energy and emits 5.5 kg of CO₂ — more than 77% of polymer grades. Typical recycled content is 0%.
Manufacturability4
Durable Resin's machinability is good (55/100, worse than 64% of polymer grades); weldability not recommended (5/100); formability poor (15/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. Durable Resin is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Durable Resin
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.
Manufacturability
The process limits FabDigit's quote engine applies to Durable Resin. Design inside these and the part quotes instantly; outside them it routes to an engineer.
Injection molding
| Mold shrinkage | — |
|---|---|
| Wall thickness | — – — |
| Recommended draft | — |
| Pre-drying | — |
3D printing
| Technologies | SLA |
|---|---|
| Layer height | 50 – 300 µmdefault 100 µm |
| Minimum wall / feature | 1 / 0.5 mm |
| Build envelope | 300 × 300 × 380 mm |
| Supports | Yes |
| Anisotropy | Moderate |
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) |
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.
Surface treatments FabDigit runs on polymer parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Coating
Injection Molding Coating
Metallization / Functional
Coloring
Equivalent designations
Standards and trade names that resolve to Durable Resin in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- PP-Like ResinPP-Like / Durable ResinDurable SLA Resin
- Also called
- Polypropylene-like Resin
- Similar grades
- GB/T 35022
How much does Durable Resin cost?
Durable Resin is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Durable Resin — frequently asked
What is Durable Resin used for?
Durable Resin is typically used for living hinges, snap fits and clips, PP-like functional prototypes, low-friction wear pads and bushing prototypes, press-fit enclosure lids and ball-and-socket joint prototypes. In short: wear-resistant flexible resin.
What is the yield strength of Durable Resin?
Durable Resin has a typical yield strength of 22 MPa (3.19 ksi) and a tensile strength of 28 MPa (4.06 ksi) — weaker than 78% of polymer grades. Strength varies by condition: see the 3 listed tempers.
Is Durable Resin easy to machine?
Reasonably — machinability is rated good (55/100, worse than 64% of polymer grades). Machinable with sharp tools, high speed and low feed, but the soft matrix smears — prefer drilling/reaming to milling and avoid coolant soak.
Can Durable Resin be welded?
Not readily — weldability is rated not recommended (5/100). Thermoset — cannot be heat welded; join with cyanoacrylate, UV-cure acrylate or two-part epoxy after light abrasion.
What surface finishes work on Durable Resin?
Sands and vapor-free polishes to a satin finish; primer + flexible paint or dyeing works, but keep parts out of sunlight or clear-coat with a UV-blocking topcoat.
Can Durable Resin be formed, bent or molded?
Print at 50–100 µm layers, orient living hinges so bending is across layers, then wash briefly in IPA (<10–15 min) and heat post-cure (typically 60–70 °C UV) to reach datasheet properties.
What is the maximum service temperature of Durable Resin?
Durable Resin is rated for continuous use to about 40°C (104 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does Durable Resin cost?
Durable Resin is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Can FabDigit make parts in Durable Resin?
Yes — Durable Resin 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; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.