TangoBlackPlus FLX9870-DM
Hardness band
also FLX980
FLX9870-DM = digital material blend, Shore A 70
Firm rubber feel with better tear resistance; good for hinges and thin living-flex features.
Values for the FLX9870-DM condition
Other TangoBlackPlus grades and fills
TangoBlackPlus is listed in 8 conditions; see the grade overview at TangoBlackPlus.
Compare all 8 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
FLX980Default Neat TangoBlackPlus, softest black rubber-like grade | Pick when the softest, most stretchable opaque black PolyJet elastomer feel is required (grips, gaskets, boots). | — | 1 | 195 | 27 Shore A |
Glossy print mode | Use for cosmetic soft-touch surfaces where a smooth, slightly tacky black gloss finish is wanted. | — | 1 | 200 | 28 Shore A |
Digital material blend, Shore A 40 | Blend of FLX980 with rigid Vero resin when a slightly firmer, dimensionally steadier soft part is needed. | — | 2 | 120 | 8 Shore D |
Digital material blend, Shore A 50 | Mid-soft blend for seals and over-mould simulations that must hold shape under light load. | — | 2 | 90 | 11 Shore D |
Digital material blend, Shore A 60 | Typical TPE-substitute hardness for buttons, bumpers and grip inserts. | — | 3 | 65 | 15 Shore D |
FLX9870-DMThis page Digital material blend, Shore A 70 | Firm rubber feel with better tear resistance; good for hinges and thin living-flex features. | — | 4 | 50 | 21 Shore D |
Digital material blend, Shore A 85 | Hard elastomer blend for shoe soles, wheels and stiff sealing lips. | — | 6 | 40 | 32 Shore D |
Digital material blend, Shore A 95 | Hardest rubber-like blend, close to rigid plastic; choose for semi-flexible housings and clips. | — | 9 | 30 | 45 Shore D |
What is TangoBlackPlus FLX9870-DM?
TangoBlackPlus FLX9870-DM is TangoBlackPlus heat treated to FLX9870-DM — firm rubber feel with better tear resistance; good for hinges and thin living-flex features. TangoBlackPlus FLX9870-DM has a tensile strength of 4 MPa (0.609 ksi), weaker than 82% of polymer grades. Elongation at break is 50% and the elastic modulus is 0.01 GPa (0.0019 Msi). TangoBlackPlus FLX9870-DM has a density of 1.13 g/cm³ (0.0406 lb/in³), lighter than 63% of polymer grades. Its glass-transition temperature is 0°C (32 °F). FLX980 is the default condition FabDigit quotes; FLX9870-DM is available on request or by drawing note.
Limitations
- Difficult to machine — 22/100, worse than 95% of polymer grades
- Hard to polish — 20/100, worse than 95% of polymer grades
- Needs corrosion protection — 57/100, worse than 92% of polymer grades
- Limited service temperature — 55°C (131 °F), worse than 91% of polymer grades
- Difficult to weld — 5/100, worse than 89% of polymer grades
TangoBlackPlus FLX9870-DM properties
Typical room-temperature values for TangoBlackPlus FLX9870-DM; 15 are specific to this condition. Other listed values are TangoBlackPlus reference data and may not represent this condition. Bars are the position among polymer grades.
Physical2
TangoBlackPlus FLX9870-DM has a density of 1.13 g/cm³ (0.0406 lb/in³), lighter than 63% of polymer grades. Its glass-transition temperature is 0°C (32 °F).
Mechanical7
TangoBlackPlus FLX9870-DM has a tensile strength of 4 MPa (0.609 ksi), weaker than 82% of polymer grades. Elongation at break is 50% and the elastic modulus is 0.01 GPa (0.0019 Msi).
Thermal3
TangoBlackPlus FLX9870-DM is rated for continuous service to 55°C (131 °F). It conducts heat at 0.21 W/m·K (0.121 BTU/hr·ft·°F), better than 55% of polymer grades.
Electrical1
TangoBlackPlus FLX9870-DM has an electrical resistivity of 3×10¹² Ω·m.
Chemical & Environmental3
Corrosion resistance is good (57/100), worse than 92% of polymer grades. UV resistance is poor.
Manufacturability4
TangoBlackPlus FLX9870-DM's machinability is poor (22/100, worse than 95% of polymer grades); weldability not recommended (5/100); formability not recommended (14/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with TangoBlackPlus FLX9870-DM
Is TangoBlackPlus easy to machine?
Not machinable in any normal sense — trim flash with a fresh blade or scissors; the soft tacky surface tears and clogs abrasives.
Can TangoBlackPlus be welded?
Cannot be welded; join by adhesive bonding with cyanoacrylate or silicone-compatible flexible adhesive, or print as one piece.
Can TangoBlackPlus be formed, bent or molded?
Jetted and UV-cured layer by layer at 16–32 µm; requires SUP705/SUP706 support in matte mode, keep walls ≥1 mm to avoid tearing during support removal.
What surface finishes work on TangoBlackPlus?
Support removed by waterjet or NaOH bath; do not bead-blast. Surface cannot be polished or painted reliably — gloss/matte is decided at print time, and prolonged UV exposure hardens and yellows the part.
TangoBlackPlus 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 oligomerflexible backbone giving rubber-like elongation | 30 – 60 | 45 |
| acrylate/methacrylate monomersreactive diluents controlling viscosity and crosslink density | 20 – 40 | 30 |
| acrylic oligomer / crosslinker | 5 – 20 | 12 |
| photoinitiatorUV free-radical initiator package | 0.5 – 3 | 2 |
| carbon black / black pigmentgives the opaque black colour | 0.1 – 2 | 0.5 |
| additives (stabilizers, surfactants) | balance | — |
TangoBlackPlus FLX9870-DM — frequently asked
What is TangoBlackPlus FLX9870-DM used for?
TangoBlackPlus FLX9870-DM is typically used for soft-touch overmolds, rubber gasket prototypes and handle grips. In short: legacy soft rubber simulant; superseded by Agilus30; digital-material hardness blends.
What is the tensile strength of TangoBlackPlus FLX9870-DM?
TangoBlackPlus FLX9870-DM has a typical tensile strength of 4 MPa (0.609 ksi) — weaker than 82% of polymer grades. Strength varies by condition: see the 8 listed tempers.
Is TangoBlackPlus FLX9870-DM easy to machine?
Not especially — machinability is rated poor (22/100, worse than 95% of polymer grades). Not machinable in any normal sense — trim flash with a fresh blade or scissors; the soft tacky surface tears and clogs abrasives.
Can TangoBlackPlus FLX9870-DM be welded?
Not readily — weldability is rated not recommended (5/100). Cannot be welded; join by adhesive bonding with cyanoacrylate or silicone-compatible flexible adhesive, or print as one piece.
What surface finishes work on TangoBlackPlus FLX9870-DM?
Support removed by waterjet or NaOH bath; do not bead-blast. Surface cannot be polished or painted reliably — gloss/matte is decided at print time, and prolonged UV exposure hardens and yellows the part.
Can TangoBlackPlus FLX9870-DM be formed, bent or molded?
Jetted and UV-cured layer by layer at 16–32 µm; requires SUP705/SUP706 support in matte mode, keep walls ≥1 mm to avoid tearing during support removal.
What is the maximum service temperature of TangoBlackPlus FLX9870-DM?
TangoBlackPlus FLX9870-DM 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.
Sources
- PolyJet Rubber-like (Tango) Materials Data Sheet — TangoPlus/TangoBlackPlus FLX930/FLX980 — Stratasys (2019)
- PolyJet Digital Materials Data Sheet (FLX9840–FLX9895-DM Shore A 40–95) — Stratasys (2019)
- Safety Data Sheet — FLX980 Rubber-like Black — Stratasys (2018)
- Additive Manufacturing Technologies (material jetting photopolymer properties) — Springer / Gibson, Rosen & Stucker (2021)
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.