Durus
also RGD430
Durus (RGD430) is a semi-rigid, opaque PolyJet photopolymer formulated to approximate the stiffness and impact behaviour of polypropylene, supplied in glossy, matte and digital-material blend configurations.
Reference datasheet — Durus is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the RGD430 condition
Durus grades and fills
Durus is supplied in 3 conditions, soft to hard. RGD430 is the default FabDigit quotes; the values on this page are for it.
Compare all 3 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Durus jetted with rigid Vero or rubber-like Tango | Use on multi-material PolyJet machines when a stiffness gradient or over-molded soft/hard assembly must be printed in one build. | 20 | 25 | 45 | 65 Shore D |
Glossy print mode | Pick for the smoothest as-printed surface and slightly higher measured strength on up-facing walls; geometry must allow support-free faces. | 24 | 28 | 48 | 69 Shore D |
RGD430Default Durus White, standard PolyJet resin | Default and only chemistry of this grade: choose for PP-like flexible snap-fits, living hinges and thin-wall enclosures on PolyJet machines. | 25 | 45 | 68 Shore D |
Supply forms, finishes and certifications
Ways Durus is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
MATTE | Matte print mode | Surface finish |
What is Durus?
Durus (RGD430) is a semi-rigid, opaque PolyJet photopolymer formulated to approximate the stiffness and impact behaviour of polypropylene, supplied in glossy, matte and digital-material blend configurations. It is selected for living-hinge, packaging and housing prototypes that must flex without fracturing; default values are 25 MPa tensile strength, 45% elongation, Shore D 68, 1.1 GPa modulus and a 45 °C maximum service temperature. The resin is soft and gummy to machine, softens near 45 °C, and creeps under humidity and sunlight. Rigur (RGD450) is the tougher, stronger successor. Durus has a density of 1.17 g/cm³ (0.0423 lb/in³), lighter than 54% of polymer grades. Its glass-transition temperature is 43°C (109 °F). Durus has a yield strength of 22 MPa (3.19 ksi) and a tensile strength of 25 MPa (3.63 ksi) — weaker than 78% of polymer grades. Elongation at break is 45% and the elastic modulus is 1.1 GPa (0.16 Msi).
What is Durus used for?
- living hinge prototypes
- packaging mockups
- consumer product housings
Limitations
- Limited service temperature — 45°C (113 °F), worse than 98% of polymer grades
- Absorbs moisture — dry before molding — 1.8%, worse than 95% 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
- Limited formability — 15/100, worse than 79% of polymer grades
Durus properties
Typical room-temperature values for Durus-RGD430; bars are the position among polymer grades.
Physical3
Durus has a density of 1.17 g/cm³ (0.0423 lb/in³), lighter than 54% of polymer grades. Its glass-transition temperature is 43°C (109 °F).
Mechanical10
Durus has a yield strength of 22 MPa (3.19 ksi) and a tensile strength of 25 MPa (3.63 ksi) — weaker than 78% of polymer grades. Elongation at break is 45% and the elastic modulus is 1.1 GPa (0.16 Msi).
Thermal8
Durus 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 110 µm/m·K (61.1 µin/in·°F).
Electrical1
Chemical & Environmental3
Corrosion resistance is very good (70/100), worse than 78% of polymer grades. UV resistance is poor.
Sustainability3
Producing a kilogram of Durus takes about 115 MJ of energy and emits 5.5 kg of CO₂ — more than 70% of polymer grades. Typical recycled content is 0%.
Manufacturability4
Durus's machinability is fair (45/100, worse than 78% 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. Durus is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Durus
Is Durus easy to machine?
Drill and trim with sharp tools at low speed and no coolant heat build-up — the resin is soft, gummy and softens near 45 °C.
Can Durus be welded?
Thermoset network cannot be heat-welded; join with cyanoacrylate or UV-curable acrylic adhesive.
Can Durus be formed, bent or molded?
Not moldable; parts are built layer-by-layer at 28–32 µm on PolyJet heads, then support (SUP705/706) is water-jet or caustic-bath removed.
Durus 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/methacrylate monomersreactive diluents controlling viscosity for jetting | 30 – 60 | 45 |
| photoinitiatorUV free-radical initiator package | 1 – 4 | 2 |
| pigment (TiO2 white) + stabilizersopaque white coloration, inhibitors | 1 – 5 | 3 |
| urethane/polyester acrylate oligomersflexibilizing oligomer backbone giving the PP-like ductility | ≥ 30 (balance) |
What surface finishes work on Durus?
Sand and prime before painting; keep parts dry and out of sunlight, and seal or clear-coat if any UV exposure or humidity-driven creep is expected.
Equivalent designations
Standards and trade names that resolve to Durus in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- RGD430
How much does Durus cost?
Durus is a high-cost polymer ($$$$), pricier than about 78% 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.
Durus — frequently asked
What is Durus used for?
Durus is typically used for living hinge prototypes, packaging mockups and consumer product housings. In short: polypropylene-simulating PolyJet resin; semi-rigid, flexes without fracture; superseded by Rigur.
What is the yield strength of Durus?
Durus has a typical yield strength of 22 MPa (3.19 ksi) and a tensile strength of 25 MPa (3.63 ksi) — weaker than 78% of polymer grades. Strength varies by condition: see the 3 listed tempers.
Is Durus easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 78% of polymer grades). Drill and trim with sharp tools at low speed and no coolant heat build-up — the resin is soft, gummy and softens near 45 °C.
Can Durus be welded?
Not readily — weldability is rated not recommended (5/100). Thermoset network cannot be heat-welded; join with cyanoacrylate or UV-curable acrylic adhesive.
What surface finishes work on Durus?
Sand and prime before painting; keep parts dry and out of sunlight, and seal or clear-coat if any UV exposure or humidity-driven creep is expected.
Can Durus be formed, bent or molded?
Not moldable; parts are built layer-by-layer at 28–32 µm on PolyJet heads, then support (SUP705/706) is water-jet or caustic-bath removed.
What is the maximum service temperature of Durus?
Durus is rated for continuous use to about 45°C (113 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Durus RGD430 and Durus GLOSSY?
RGD430 is the default condition — default and only chemistry of this grade: choose for PP-like flexible snap-fits, living hinges and thin-wall enclosures on PolyJet machines. GLOSSY: pick for the smoothest as-printed surface and slightly higher measured strength on up-facing walls; geometry must allow support-free faces. Yield strength is 22 MPa in RGD430 versus 24 MPa in GLOSSY.
How much does Durus cost?
Durus is a high-cost polymer ($$$$), pricier than about 78% 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.
Sources
- PolyJet Materials Data Sheet — Durus White RGD430 — Stratasys (2017)
- PolyJet Photopolymer Selection Guide (Vero / Durus / Rigur / Tango) — Stratasys (2020)
- ASTM D638 / D790 / D256 / D648 / D570 test methods — ASTM International (2022)
- Additive-manufacturing photopolymer property compilations — FabDigit internal (2026)
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.