Durus DM-BLEND
Grade
also RGD430
Use on multi-material PolyJet machines when a stiffness gradient or over-molded soft/hard assembly must be printed in one build.
Values for the DM-BLEND condition
Other Durus grades and fills
Durus is listed in 3 conditions; see the grade overview at Durus.
Compare all 3 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
DM-BLENDThis page 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 |
What is Durus DM-BLEND?
Durus DM-BLEND is Durus in the DM-BLEND grade — use on multi-material PolyJet machines when a stiffness gradient or over-molded soft/hard assembly must be printed in one build. Durus DM-BLEND has a yield strength of 20 MPa (2.9 ksi) and a tensile strength of 25 MPa (3.63 ksi) — weaker than 80% of polymer grades. Elongation at break is 45% and the elastic modulus is 0.9 GPa (0.131 Msi). Durus DM-BLEND 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). RGD430 is the default condition FabDigit quotes; DM-BLEND is available on request or by drawing note.
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
- Needs corrosion protection — 68/100, worse than 85% of polymer grades
Durus DM-BLEND properties
Typical room-temperature values for Durus DM-BLEND; 26 are specific to this condition. Other listed values are Durus reference data and may not represent this condition. Bars are the position among polymer grades.
Physical3
Durus DM-BLEND 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 DM-BLEND has a yield strength of 20 MPa (2.9 ksi) and a tensile strength of 25 MPa (3.63 ksi) — weaker than 80% of polymer grades. Elongation at break is 45% and the elastic modulus is 0.9 GPa (0.131 Msi).
Thermal8
Durus DM-BLEND 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 good (68/100), worse than 85% of polymer grades. UV resistance is poor.
Sustainability3
Producing a kilogram of Durus DM-BLEND 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 DM-BLEND's machinability is fair (38/100, worse than 83% of polymer grades); weldability not recommended (5/100); formability poor (25/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Durus DM-BLEND
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.
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.
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) | — |
Durus DM-BLEND — frequently asked
What is Durus DM-BLEND used for?
Durus DM-BLEND 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 DM-BLEND?
Durus DM-BLEND has a typical yield strength of 20 MPa (2.9 ksi) and a tensile strength of 25 MPa (3.63 ksi) — weaker than 80% of polymer grades. Strength varies by condition: see the 3 listed tempers.
Is Durus DM-BLEND easy to machine?
Not especially — machinability is rated fair (38/100, worse than 83% 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 DM-BLEND 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 DM-BLEND?
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 DM-BLEND 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 DM-BLEND?
Durus DM-BLEND 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 20 MPa in RGD430 versus 24 MPa in GLOSSY.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.