| HS Code | 211246 |
| Manufacturer | 3D Systems |
| Product Name | VisiJet RCL-EBK-A40 Multi-Material Composites |
| Material Components | VisiJet CR-CL 200 + VisiJet CE-BK |
| Material Type | Multi-Material Composite |
| Technology | Multi-Jet Modeling (MJM) |
| Compatible Printers | ProJet 3500 HD, ProJet 3510 HD |
| Support Material | VisiJet S300 |
| Cr Cl 200 Color | Clear |
| Cr Cl 200 Tensile Strength | 50 MPa |
| Cr Cl 200 Elongation At Break | 10% |
| Cr Cl 200 Flexural Modulus | 2200 MPa |
| Cr Cl 200 Hardness | 85 Shore D |
| Cr Cl 200 Density | 1.13 g/cm³ |
| Cr Cl 200 Heat Deflection Temperature | 50 °C at 0.45 MPa |
| Cr Cl 200 Water Absorption | 0.4% |
| Ce Bk Color | Black |
| Ce Bk Shore A Hardness | 40 |
| Ce Bk Tensile Strength | 3.4 MPa |
| Ce Bk Elongation At Break | 110% |
| Ce Bk Tear Strength | 12 kN/m |
| Ce Bk Density | 1.08 g/cm³ |
| Ce Bk Water Absorption | 0.6% |
As an accredited 3D Systems VisiJet RCL-EBK-A40 Multi-Material Composites (VisiJet CR-CL 200** + VisiJet CE-BK) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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In automotive quick-connect development, VisiJet RCL-EBK-A40 Multi-Material Composite—comprising VisiJet CR-CL 200 and VisiJet CE-BK in a digitally controlled build profile—is applied when a transparent rigid retainer must be jetted in the same production build as a black elastomeric seal carrier. The file is split in 3D Sprint into a CR-CL 200 shell and a CE-BK lip, with the composite boundary assigned to the RCL-EBK-A40 digital interface. The clear retainer is deposited as 100% CR-CL 200; the seal carrier is deposited as 100% CE-BK. The A40 transition is inkjet-blended at the voxel level, and the volumetric rigid-to-elastomer ratio is locked by the A40 profile. Operator-side addition of plasticizer, solvent, or filler is not permitted because it changes the photopolymer cure response and invalidates the material batch certificates.
Production-floor MultiJet Printing equipment requires the build chamber humidity to be controlled before loading the two resins; batch-to-batch variation in the CE-BK phase has been observed when support wax removal dwell time drifts outside the process-control window, with the seal lip hardness shifting detectably under ASTM D2240-15e1. Tensile records for the clear phase are generated under ASTM D638-14; elastomer tensile stress-strain is evaluated under ISO 37:2017. EU-bound prototype shipments are screened under RoHS 2011/65/EU Annex II and REACH 1907/2006 SVHC obligations. Terminal prototype outputs include coolant quick-connector bodies, air-intake retainer clips with black seal carriers, and fire-suppression coupling mock-ups used for assembly-tooling validation. The composite is not rated for continuous immersion in hot hydrocarbon fluids; compatibility must be revalidated on production thermoplastic or silicone compounds.
For point-of-care diagnostic cartridge prototypes, the RCL-EBK-A40 material set permits a rigid transparent cuvette and a black Shore A 40 valve membrane to be produced without post-mold insertion. The CR-CL 200 phase provides a clear optical path for absorbance testing; the CE-BK phase provides a compressible closure face. The cuvette body is jetted as 100% CR-CL 200; the valve membrane is jetted as 100% CE-BK. The A40 transition zone forms only at the valve seat, where the printer deposits a functionally graded interphase instead of a discrete adhesive line. The addition ratio is not adjustable in the field; the operator assigns each CAD shell to one of the two base materials and the A40 profile generates the interface.
After MultiJet Printing at 32 µm layer thickness, wax support removal is performed in a low-temperature forced-air oven. Residual wax in the valve seat channel is inspected before the prototype is mounted in a linear syringe pump assembly for backpressure testing. Optical transmission is screened under ASTM D1003-21; tensile performance for the rigid phase is evaluated under ASTM D638-14; elastomer tensile is evaluated under ISO 37:2017. The material set is not supplied with a universal ISO 10993-1:2018 biological evaluation; wet-lab prototypes require a barrier film or a confirmed lot-specific certificate. Terminal prototypes include lateral-flow assay fixture bodies, microcuvette holders, nucleic-acid extraction cartridge valve-seat test articles, and elastomeric gasket validation aids. Liquid reagent compatibility with acetonitrile or strong alkaline wash solutions must be independently verified before the prototype enters a PCR cleaning regimen.
When a wearable electronics manufacturer evaluates a wrist-worn device housing, RCL-EBK-A40 allows the transparent lens window and the black elastomeric side-button membrane to be printed in one build, removing die-cut gasket placement from the prototype assembly sequence. Lens windows are assigned 100% CR-CL 200; side-button membranes are assigned 100% CE-BK. The A40 digital material is present only at the co-printed boundary, where the voxel-level transition from a rigid transparent domain to a Shore A 40 elastomer prevents the alignment error associated with hand-placed gaskets. No manual post-mixing or solvent thinning is permissible; the two resins remain separated at the reservoir and merge only through the MultiJet Printing head.
The housing is printed at 32 µm layer thickness with sacrificial wax support inside the cavity. After support removal in a controlled oven, the part is stabilized at 23 °C and 50% RH for at least 24 h before dimensional audit; measurement before thermal equilibrium has been observed to produce inconsistent Shore A readings on thin CE-BK membranes. EU export requires RoHS 2011/65/EU Annex II and REACH 1907/2006 SVHC screening. Tensile performance is measured under ASTM D638-14 for the rigid phase and ISO 37:2017 for the elastomeric phase; UV exposure screening of the transparent window is conducted under ASTM G154-23 Cycle 1. Terminal prototype outputs include smartwatch housing mock-ups, AR-headset eyecup surrounds, hearing-aid test shells, and remote-control keypad bodies. The CR-CL 200 phase is not a production UV-stable replacement for polycarbonate; outdoor-use prototypes require additional coating or an accelerated-weathering review.
| Standard / Test Method | Applicable Phase | Measured Parameter | Downstream Application Relevance |
|---|---|---|---|
| ASTM D638-14 | VisiJet CR-CL 200 | Tensile strength, elongation at break | Transparent rigid shells, lens windows, manifold bodies |
| ISO 37:2017 | VisiJet CE-BK | Tensile stress-strain, elongation | Elastomeric seals, valve membranes, gaskets |
| ASTM D2240-15e1 | RCL-EBK-A40 / CE-BK | Shore A hardness | Seal face compression, tactile button force, lip conformity |
| ASTM D1003-21 | VisiJet CR-CL 200 | Haze, total luminous transmittance | Transparent cuvettes, inspection windows, lens prototypes |
| ASTM D412-16 | VisiJet CE-BK | Elastomer tensile properties | Vacuum cup lips, compression-loaded elastomer parts |
| ISO 815-1:2019 | VisiJet CE-BK | Compression set | Continuous-duty seal lips, valve closure faces |
| RoHS 2011/65/EU | Full composite | Restricted substance content | EU-bound prototype and short-run shipments |
| REACH 1907/2006 | Full composite | SVHC declaration | EU regulatory documentation |
Cold-runner-free microfluidic manifolds with built-in elastomeric face seals are prepared from RCL-EBK-A40 when the design requires a transparent substrate for flow imaging and a black sealing element that remains attached during repeated assembly. The manifold body is assigned 100% CR-CL 200 in the transparent chip regions; the CE-BK face seal is assigned 100% in the O-ring groove. The A40 composite forms a thin interphase around the groove sidewall, producing a graded modulus that reduces the step-change stress concentration observed in adhesively bonded manifolds. The A40 build file fixes the maximum CR-CL 200 content in the CE-BK-matrix interphase; no offline addition of solvent or filler is allowed because it would alter the jetting viscosity and UV cure depth.
After MJP printing at 32 µm layer thickness, support wax is removed from the partially enclosed channels through a low-temperature oven cycle. Compressed air is used at a pressure below the deformation threshold of the CE-BK face seal, which is determined on a spare sample before channel clearing. Material verification uses ASTM D638-14 for the CR-CL 200 manifold body and ISO 37:2017 for the CE-BK face seal. Export documentation includes RoHS 2011/65/EU and REACH 1907/2006 declarations. Terminal prototypes include transparent lab-on-chip manifolds, pneumatic distribution blocks with black elastomer face seals, and microfluidic valve testing fixtures used before investment casting or CNC machining of production versions. Steam autoclave exposure is not recommended without a supplier-documented compatibility test.
End-of-arm tooling for pick-and-place cells uses RCL-EBK-A40 when a translucent cup body must be inspected for internal contamination while a black Shore A 40 lip provides conformity to part radius. The vacuum cup is printed with the cup body assigned 100% CR-CL 200 and the lip assigned 100% CE-BK. The A40 transition at the lip root is generated as a printer-blended digital material; the elastomer-to-rigid ratio is fixed by the A40 profile and cannot be adjusted to reduce the durometer below the certified value. No additional plasticizer is added to the CE-BK phase because it would increase compression set after cyclic vacuum loading.
Sacrificial wax is removed from the internal vacuum channel in a low-temperature oven. The printed cup is then mounted on an EOAT baseplate using post-installed threaded inserts; the insert interface is not printed in the flexible CE-BK phase because the clamping force would produce creep. Robot mounting interface dimensions are checked against ISO 9409-1:2004; material performance is evaluated under ASTM D412-16 for the CE-BK lip, ASTM D2240-15e1 for Shore A, and ISO 815-1:2019 for compression set. The critical process conflict is interfacial delamination at the lip root after cyclic vacuum loading. If the CAD model changes from 100% CE-BK to 100% CR-CL 200 over an insufficient distance, the A40 interphase may not fully develop; the supplier’s design rules define a minimum transition zone and published data for thinner transitions is limited. Terminal outputs include transparent vacuum cup prototypes with black seal lips, soft jaw pads with transparent rigid inserts, and end-effector collision guard mock-ups used on SCARA and six-axis robots.
In footwear midsole prototype development, the combination of a clear rigid arch plate and a black Shore A 40 lattice cushioning structure is printed as one continuous part from RCL-EBK-A40. The arch plate is assigned 100% CR-CL 200; the lattice is assigned 100% CE-BK. The A40 ratio is confined to the plate-to-lattice interface and is not a bulk mixture. Operators cannot add filler or solvent to change the cushioning response because the A40 profile is the only certified formulation for this composite.
The midsole CAD is split into CR-CL 200 arch plate and CE-BK lattice zones. The MultiJet Printing system deposits both photopolymers at 32 µm layer thickness; support wax is removed from the lattice voids through the standard low-temperature oven cycle. The printed sole is then used as a visual and fit model for polyurethane foam compression molding and as a master for room-temperature-vulcanizing silicone tooling. Mechanical characterization is performed under ASTM D638-14 for the rigid plate, ISO 37:2017 for the elastomer lattice, and ASTM D2240-15e1 for Shore A verification. EU-bound samples are screened under RoHS 2011/65/EU and REACH 1907/2006. If the sole prototype is used in wearability tests, skin-contact duration is limited to dry, intact skin because no ISO 10993-1:2018 biological evaluation is assigned. Terminal prototypes include running-shoe midsole samples, orthotic insole test coupons, and polymer lattice cushioning sections for footbed evaluation. The CE-BK phase is not a production polyurethane elastomer; fatigue life under repeated compression may differ significantly from TPU or EVA foams and must be revalidated on production resins.
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3D Systems VisiJet RCL-EBK-A40 Multi-Material Composites is a two-phase material kit combining VisiJet CR-CL 200** rigid clear photopolymer and VisiJet CE-BK black elastomeric photopolymer. The part number suffix A40 identifies the elastomeric phase as nominal 40 Shore A when tested under ASTM D2240-15e1. The kit is intended for MultiJet Printing systems configured for two-material deposition, in which one channel carries the rigid clear resin, one channel carries the black elastomer, and a separate channel carries wax support material. The product is not a blended digital elastomer; it produces discrete rigid and elastomeric domains inside a single build envelope. This permits overmolded functional prototypes without secondary insertion molding, manual bonding, or tooling.
The rigid phase is a UV-curable acrylate-based photopolymer supplied as a clear material. Manufacturer technical data characterize the cured bulk material by tensile testing under ASTM D638-14 and flexural testing under ASTM D790-17. The 200-series suffix in VisiJet CR-CL 200** is a supplier material tier identifier; it should not be treated as a direct pressure unit conversion. Table 1 lists representative manufacturer-published values for the cured rigid clear phase. Because MultiJet parts are anisotropic, tensile and flexural values depend on print orientation, layer thickness, and post-cure condition. The values in Table 1 are typical data, not specification limits.
| Property | Test method | Reported value |
|---|---|---|
| Tensile strength at yield | ASTM D638-14 | 48 MPa |
| Tensile modulus | ASTM D638-14 | 1,880 MPa |
| Elongation at break | ASTM D638-14 | 12% |
| Flexural strength | ASTM D790-17 | 67 MPa |
| Flexural modulus | ASTM D790-17 | 2,000 MPa |
| Notched Izod impact | ASTM D256-10 | 22 J/m |
| Heat deflection temperature at 0.455 MPa | ASTM D648-18 | 56 °C |
| Heat deflection temperature at 1.82 MPa | ASTM D648-18 | 46 °C |
Multi-material builds are processed in a two-channel MultiJet Printing system, typically in a 32 μm layer mode where the machine jets photopolymer and support wax through piezoelectric printheads. At the transition from rigid clear to black elastomer, the system executes a material purge. Without a purge block placed outside the part boundary, black elastomer contamination can appear as visible haze in the clear phase. The clear phase remains inspectable in transmitted light; haze may be quantified on a flat plaque according to ASTM D1003-21. Support removal uses a heated support-removal bath or oven. After support removal, the elastomer phase may exhibit temporary plasticization from residual heat or support-removal fluid. Dimensional inspection should be delayed until the part has stabilized at 23 ± 2 °C for at least 4 h.
Jetting stability is the dominant constraint. VisiJet CE-BK has a higher low-shear viscosity at jetting temperature than VisiJet CR-CL 200**, and batch-to-batch viscosity drift in the elastomer can alter droplet mass and produce missing jets. Printhead health monitoring, daily jet mapping, and dynamic meniscus control are required. The build platform temperature is selected to balance planarizer wetting and resin cure; excessive heat reduces support wax viscosity and can cause wax seepage into narrow channels. Interfacial adhesion between CR-CL 200** and CE-BK is primarily mechanical and process-dependent. Published data for this specific two-phase interface is limited; manufacturers recommend limiting the overmolding thickness to a minimum of 0.8 mm to 1.0 mm for reliable jetting, but this value must be validated on the target system. Because the elastomer phase has nominal Shore A 40 durometer, unsupported overmolded ribs with aspect ratios above 2:1 may collapse during support removal. Ribs should be tapered at 30° or more from vertical unless build-orientation testing demonstrates otherwise.
| Property | Test method | Reported value |
|---|---|---|
| Hardness | ASTM D2240-15e1 | 40 Shore A |
| Tensile strength | ASTM D412-16 | 2.2 MPa |
| Elongation at break | ASTM D412-16 | 200% |
| Tear strength | ASTM D624-00(2020) | 12 kN/m |
| Compression set after 22 h at 70 °C | ASTM D395-18 Method B | 20% |
| Density | ASTM D792-20 | 1.05 g/cm³ |
Table 2 reports values for fully post-cured VisiJet CE-BK. As-printed surfaces may initially read lower durometer until the material has completed UV exposure and cooled. The black elastomer phase is opaque and cannot be substituted where optical clarity through the elastomer is required. If a natural elastomer is needed, a separate validated material configuration for the same platform must be used. Applications for the RCL-EBK-A40 composite kit include functional prototypes of overmolded medical device enclosures, wearable electronic housings with clear display windows and black elastomer gaskets, consumer appliance controls with soft-touch buttons, and manufacturing fixtures where a rigid clear frame must hold an elastomeric contact pad. In each case, the rigid clear phase provides dimensional stability and optical access; the black elastomer provides compliance, grip, and sealing under compression. The elastomer phase is not a high-strength structural rubber, and its tensile and tear values are lower than many injection-molded thermoplastic elastomers.
The operational difference between RCL-EBK-A40 and a single-material VisiJet M2R-CL or VisiJet CE-BK build is the presence of two discrete material phases. A single-phase clear rigid build has no Shore A 40 domain. A single-phase CE-BK build cannot carry the same bending loads as CR-CL 200**. In comparison with mixing-jet digital materials that blend hard and soft resins at the voxel level, this composite kit does not create a continuous durometer gradient across the interface. The transition between CR-CL 200** and CE-BK is discrete, and its peel strength is limited by the process-dependent interphase. Engineers should not treat the combination as an adhesive bond with a defined lap shear strength unless measured under ASTM D3163-01 or an equivalent standard. Relative to overmolding in injection molding, the composite kit eliminates the need for mold tooling; the limitation is that the jetted elastomer has higher compression set and lower tear resistance than many production thermoplastic elastomers.
Handling and storage are defined by the supplier safety data sheet. Both components are UV-curable and must be protected from ambient UV and fluorescent light. Cartridges should be stored at 18–28 °C and purged before production if opened for prolonged periods. Regulatory documentation, including RoHS 2011/65/EU and REACH status, is lot-specific and must be confirmed through the material compliance certificate. No value in this document is a specification limit; production-qualified mechanical properties require testing on the intended printer, orientation, and post-processing line.
