| HS Code | 104410 |
| Product Name | 3D Systems Accura SL Y-C 9300 |
| Material Type | Selectively colorable stereolithography resin |
| Base Color | White |
| Selective Colorability | Yes |
| Tensile Strength | 64 MPa |
| Tensile Modulus | 2,850 MPa |
| Elongation At Break | 6% |
| Flexural Strength | 101 MPa |
| Flexural Modulus | 2,450 MPa |
| Hardness | 82 Shore D |
| Notched Izod Impact Strength | 23 J/m |
| Heat Deflection Temperature At 0 45 Mpa | 68 °C |
| Heat Deflection Temperature At 1 82 Mpa | 56 °C |
| Glass Transition Temperature | 78 °C |
| Density | 1.13 g/cm³ |
| Viscosity | 250 cps at 30 °C |
| Critical Exposure | 11 mJ/cm² |
| Penetration Depth | 0.14 mm |
| Water Absorption | 0.35% |
As an accredited 3D Systems Accura SL Y-C 9300 Selectively colorable stereolithography material factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Sealed 1 kg plastic bottle labeled 3D Systems Accura SL Y-C 9300, selectively colorable stereolithography material, with hazard warnings. |
| Container Loading (20′ FCL) | 20′ FCL: 3D Systems Accura SL Y-C 9300 selectively colorable stereolithography material is palletized, secured, labeled, and loaded for ocean shipment. |
| Shipping | According to manufacturer SDS, 3D Systems Accura SL Y-C 9300 is not classified as dangerous goods for transport. It is shipped as a non-regulated liquid resin with no UN number, hazard class, or packing group. Use leak-proof packaging and follow the SDS and applicable transport regulations. |
| Storage | Store 3D Systems Accura SL Y-C 9300 in its original, tightly sealed container in a cool, dry, well-ventilated area. Protect from direct sunlight, UV light, heat, sparks, and flames. Keep away from oxidizers and incompatible substances. Maintain recommended storage temperature, typically 15–30°C, and do not freeze. Keep closed when not in use and follow SDS/local regulations. |
| Shelf Life | Store unopened in a cool, dry, dark place; typical shelf life is 12 months from manufacture when properly stored. |
In patient-specific surgical planning workflows, Accura SL Y-C 9300 selectively colorable stereolithography material is introduced into the vat at 100% of recoater trough volume without reactive diluent; recovered vat return is reconditioned by adding 15–20 vol% virgin resin to keep Brookfield RV DV-II+ spindle R2 viscosity drift below 30 cP at 25 °C. The downstream process begins with DICOM segmentation under NEMA PS3.3-2023, followed by STL export, support generation with 0.7 mm touchpoint diameter, and layerwise build at 50 µm layer thickness on a 355 nm solid-state laser SLA platform. Green parts are washed in 99% isopropanol for 10 min at 25 °C, then post-cured under 405 nm LED light at 40 °C for 30 min. Selective colorant addition is performed in a bath containing 0.3–1.2 wt% acid dye in a 70:30 v/v isopropanol/water carrier at 35 °C for 3–10 min; dye uptake is diffusion-limited and produces a penetration depth between 0.2 mm and 0.6 mm. Quality management follows ISO 13485:2016 clause 7.5.3 for production traceability, with patient-specific risk assessment conducted under ISO 14971:2019. Terminal product types include cardiovascular repair models, maxillofacial resection planning models, and renal tumor ablation models.
Because autoclave dewaxing pressure acts on the entire casting tree, Accura SL Y-C 9300 selectively colorable stereolithography patterns are assembled on a central wax runner at a pattern-to-cluster mass ratio not greater than 30 wt% to prevent shell fracture. The downstream investment casting process starts with printed patterns at 50–100 µm layer thickness, support removal, and surface sealing where necessary, followed by assembly onto wax runners at 80–120 mm spacing. Ceramic shell formulation uses a refractory slurry containing 70–75 wt% zircon flour, 25–30 wt% colloidal silica binder, and 0.10–0.15 wt% nonionic wetting agent; slurry viscosity is held between 20 s and 30 s on a Zahn #4 cup, pH is maintained at 9.5–10.5, and first-coat withdrawal speed is set at 150–300 mm/min. Shell drying occurs at 22–24 °C and 50–60% relative humidity between coats, with 7–9 ceramic layers applied. Autoclave dewaxing is executed at 150–170 °C and 5–7 bar for 15–20 min; burnout then ramps at 5 °C/min to 600–900 °C and holds for 1 h to reduce residual ash below 0.05 wt%. Pattern dimensional acceptance is referenced to ISO 8062-3:2007, ceramic shell cold crush verification follows ASTM C133-97, and foundry process records are maintained under ISO 9001:2015. Published data for this specific Accura SL Y-C 9300 configuration in superalloy investment casting is limited; foundry qualification should include test bars for shell permeability and residual ash on each resin lot. Terminal product types include cobalt and nickel superalloy turbine blades, impeller castings, and low-volume valve body castings.
Silicone room-temperature-vulcanization tooling requires master patterns with a surface finish below 3.2 µm Ra; Accura SL Y-C 9300 masters are post-cured at 60 °C for 2 h to minimize inhibition of platinum-cure RTV systems. The downstream tooling process begins with support removal and solvent cleaning in 99% isopropanol, followed by light sanding of non-critical surfaces and application of a silicone-compatible release agent. RTV silicone addition ratio is set at 10:1 base-to-catalyst by weight for addition-cure systems; the mixture is degassed at 30 mbar for 5–10 min and poured around the master with a minimum envelope thickness of 5 mm, then cured at 23 °C for 24 h or post-cured at 60 °C for 2 h. Polyurethane vacuum casting uses a two-component rigid system with a supplier-specified addition ratio commonly set at 100:80 A:B by weight; the mold is preheated to 70 °C, mixed resin is cast under −0.9 bar vacuum, and parts are demolded after 60–90 min depending on urethane gel time. Master dimensional inspection follows ISO 2768-1:1989 medium tolerance, and cast polyurethane tensile verification references ASTM D638-14. Unsealed SLA surfaces may inhibit platinum-cure RTV crosslinking; compatibility trials on 20 mm × 20 mm coupons are required before production tooling is committed. Terminal product types include rigid polyurethane electronic housings, instrument panel covers, and consumer appliance knobs.
After layerwise consolidation at 50 µm, hydraulic manifold prototypes containing branching internal channels pose a solvent-drainage problem; Accura SL Y-C 9300 parts must be designed with drain ports no smaller than 2 mm in diameter for each 50 mm of channel length to allow 99% isopropanol flushing at 0.5–1.0 bar. The downstream production process uses 50 µm layer thickness for channel wall definition, ultrasonic solvent cleaning at 25 °C for 10 min, compressed air drying at 0.5 bar, and post-cure under 405 nm LED at 60 °C for 30 min. Selective surface contrast is applied only to exterior faces with a dye solution consisting of 0.5–2.0 wt% solvent dye in 99% isopropanol at 25 °C for 2–8 min; internal channels remain undyed so flow-path visualization can be performed with transparent or translucent media. No reactive diluent is added to the vat, and recovered resin is replenished with 15–20 vol% virgin material to maintain constant viscosity. Hydrostatic leak testing is referenced to ISO 5208:2015 at 1.5× rated working pressure, and fluid cleanliness is recorded under ISO 4406:2021 class -/19/16 where hydraulic oil is used. The process is intended for short-run diagnostic hardware; sustained hydraulic service requires end-user fatigue and chemical compatibility validation. Terminal product types include hydraulic manifold blocks, pneumatic logic blocks, and cooling-channel test pieces.
| Application | Dye carrier | Dye concentration | Immersion time | Penetration depth | Process temperature |
|---|---|---|---|---|---|
| Patient-specific anatomical models | 70:30 v/v isopropanol/water | 0.3–1.2 wt% acid dye | 3–10 min | 0.2–0.6 mm | 35 °C |
| Hydraulic manifold prototypes | 99% isopropanol | 0.5–2.0 wt% solvent dye | 2–8 min | 0.1–0.4 mm | 25 °C |
| Dental laboratory diagnostic models | 70:30 v/v isopropanol/water | 0.1–0.5 wt% dye | 1–5 min | <0.3 mm | 25–30 °C |
| Electronics enclosure prototypes | 99% isopropanol | 0.5–3.0 g/L solvent dye | 2–8 min | 0.1–0.4 mm | 25 °C |
Dental implant planning workflows require a visible boundary between residual tooth structure, nerve paths, and proposed implant osteotomies; Accura SL Y-C 9300 selective coloring provides this boundary after extraoral model post-processing. The downstream production process begins with intraoral scan data processed under ISO 12836:2015, export of STL geometry, and model base shelling to 2 mm wall thickness for resin economy and dimensional stability. Parts are built at 50 µm layer thickness, washed in 99% isopropanol, and post-cured at 40 °C for 30 min. Gingival tint addition uses 0.1–0.5 wt% dye in 70:30 v/v isopropanol/water at 25–30 °C for 1–5 min; dye uptake is kept below 0.3 mm depth to avoid obscuring ridge anatomy. Metal sleeve insertion into surgical guide cylinders is performed at a 1:1 sleeve-to-bore ratio, with radial clearance controlled between 0.02 mm and 0.05 mm. Quality records follow ISO 13485:2016 for dental laboratory outputs; if transient mucosal or skin contact is anticipated, biological evaluation under ISO 10993-1:2018 is required, and published data for this specific configuration is limited, so extraoral use should remain the default boundary unless separate validation is completed. Terminal product types include extraoral diagnostic casts, implant planning models, and surgical guide verification models.
To map latch engagement zones for insertion force measurement, snap-fit diagnostic builds are post-processed with a solvent-dye bath so that engagement zones are visually encoded on consumer electronics enclosure prototypes. The downstream process prints enclosure shells at 50–100 µm layer thickness, removes supports without disturbing 0.15–0.25 mm interference lugs, cleans in 99% isopropanol, and post-cures at 60 °C for 30 min. Selective colorant addition uses 0.5–3.0 g/L solvent dye in 99% isopropanol at 25 °C for 2–8 min, producing a penetration depth of 0.1–0.4 mm; no bulk dilution of the photopolymer is performed because reduced crosslink density would shift snap-fit stiffness. Insertion force verification uses a force gauge with 10 N range and 0.05 N resolution; measurements are correlated with latch surface color boundaries to identify over-engagement. Tensile and flexural acceptance references ASTM D638-14 and ASTM D790-17, while notch sensitivity is referenced to ASTM D256-10. Flammability classification is not assumed; end-use electronic enclosure applications requiring UL 94 ratings must undergo separate material or component testing because this photopolymer is not pre-classified under a UL 94 grade. Terminal product types include mobile device housing analogs, wearable device enclosures, and peripheral casing test articles.
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3D Systems Accura SL Y-C 9300 is a selectively colorable stereolithography resin supplied for 355 nm laser-based SLA systems. The material belongs to the Accura SL line as a single-vat photopolymer that acquires spatially selective color after printing, rather than through the deposition of multiple colored resins during the build. Selective colorability is therefore a post-process operation: a monolithic part is cleaned, post-cured, and treated with a compatible dye system so that specific anatomical, functional, or instructional regions become visually distinct. Supplier documentation does not identify Y-C 9300 as an implantable or castable resin; the intended role is visualization, anatomical reference, and communication modeling in which color contrast adds information to a translucent or lightly tinted substrate.
Compared with conventional unpigmented SLA materials, the Y-C 9300 designation implies a deliberate formulation choice. The compound is not simply a paint-coated part; dye uptake is performed on the cured polymer network after photopolymerization. Public disclosure of the exact monomer and oligomer structure is limited, which is common for commercial stereolithography resins. The material is best understood as an unfilled epoxy/acrylate-class resin that is formulated to accept post-print colorants under controlled conditions. That distinction separates it from structural clear resins, castable resins, and multi-material jetted photopolymers.
The resin should be processed only on SLA platforms for which a specific build style has been released. On systems such as the 3D Systems ProJet 6000/7000 HD or ProX 800, the build preparation loads a material-specific working curve; the critical exposure and penetration depth are not transferable from Accura ClearVue or Accura 60. A build style optimized for a different Accura SL grade can produce over-cure, under-cure, or excess sidewall growth in fine recessed features. Because published data for Y-C 9300 critical working-curve constants is limited, production work instructions must take these values from the current 3D Systems material package.
The post-processing window is tighter than for non-colorable Accura SL resins because residual solvent, surface moisture, and unreacted monomer all change the dye uptake profile. Green parts are removed from the platform and washed in a manufacturer-approved solvent. Isopropanol and tripropylene glycol monomethyl ether are used in SLA part washing; however, prolonged immersion or ketone-containing solvents can swell an epoxy/acrylate network and create nonuniform dye-receptive zones. After washing, parts must be fully dried. If the ambient relative humidity exceeds 60%, water condensation can dilute water-miscible dyes and produce mottled contrast. Post-cure must be completed before dye application, because under-cured regions may exude unreacted acrylate and become tacky. The dye uptake is diffusion-limited; through-thickness color saturation should not be assumed for thick sections.
Selective placement is typically performed by masking, localized application, or sealing non-target areas. The exact dye system and carrier are not fully disclosed in public literature; published data for this specific configuration is limited. The user must verify that the dye carrier does not contain aromatic or ketone solvents that can craze or swell the cured polymer. A sacrificial skin or masked boundary can be used to produce hard edge definition. After dye application, the part should be dried under controlled conditions and sealed only after the colorant has stabilized. Ultrasonic cleaning may be used only if the manufacturer permits it; cavitation can produce localized heating and surface crazing in unfilled epoxy/acrylate resins.
For specification comparisons, tensile, flexural, thermal, and viscometric test methods must be identified because condition and specimen geometry affect the result. The following methods are applicable to unfilled stereolithography resins; whether a supplier datasheet lists Y-C 9300 values against every method depends on the material’s released dataset.
| Method | Property | Relevant condition |
|---|---|---|
| ASTM D638-14 / ISO 527-2:2012 | Tensile strength, tensile modulus, elongation at break | Type IV or 1BA specimen; 23 ± 2 °C, 50 ± 5 % RH |
| ASTM D790-17 / ISO 178:2019 | Flexural strength, flexural modulus | Three-point bending; crosshead rate tied to specimen thickness |
| ASTM D648-18 | Heat deflection temperature | Method B; 0.455 MPa and 1.82 MPa fiber stress |
| ASTM D256-10 | Notched Izod impact | Method A |
| ASTM D2240-15 | Durometer hardness | Shore D |
| ISO 2884-1:2010 | Liquid viscosity | Rotational viscometer at supplier-defined shear rate and temperature |
| ISO 11664-4:2008 / ASTM D2244-23 | Color difference | CIE L*a*b* ΔE* after dye uptake |
When comparing Y-C 9300 to other products, the user must record specimen type, conditioning atmosphere, and post-cure protocol. A tensile strength value stated without ASTM D638-14 Type IV or ISO 527-2 specimen geometry is insufficient for engineering comparison. Published data on the cured mechanical properties of Accura SL Y-C 9300 under specific standard methods is limited; the current 3D Systems datasheet should be treated as the sole primary source for production-critical values.
For any SLA resin, the liquid-to-solid transition is governed by the resin’s working curve, which relates cure depth to applied energy per unit area. The constants Ec and Dp are material and wavelength specific. For 355 nm systems, beam energy is delivered by a galvanometer-scanned laser with a typical beam diameter in the build plane of 0.100 mm to 0.200 mm. The Y-C 9300 working curve is not publicly available in secondary literature; attempting to use the working curve from a clear resin will produce incorrect scan spacing. The operator should load the released build style from the 3D Systems build preparation software.
For selectively colorable unfilled resins, the vat temperature and recoater speed control layer flatness. Production SLA systems typically hold the vat between 28 °C and 32 °C, but Y-C 9300 may require a tighter set point because any additive that modifies viscosity also modifies self-leveling. A deviation of ±2 °C can be sufficient to create visible banding on thin membranes: cold resin increases viscosity, reduces recoater leveling, and can leave a thicker layer at the leading edge of the blade. The build preparation must use the supplier-supplied laser power, scan speed, and working-curve constants. Operators cannot transpose Accura ClearVue or Accura 60 parameters to Y-C 9300; over-cure in narrow cavities can close internal features, while under-cure can produce a weak interface that absorbs dye unevenly.
Feature size and layer thickness interact with dye contrast. A 0.100 mm layer may produce visible terrace lines that act as dye reservoirs and increase edge contrast; a 0.050 mm layer reduces step height but increases build time and can reduce throughput. Recessed features below 0.500 mm may require validation builds to determine whether sidewall over-cure and post-cure shrinkage preserve the intended channel. Production observations from stereolithography lines indicate that unfilled dye-receptive resins can show increased sensitivity to beam-overlap artifacts when the build style is not tuned; however, published data specific to Y-C 9300 is limited.
Build orientation is a production variable that changes surface texture and therefore dye appearance. Downward-facing surfaces are usually rougher than upward-facing surfaces because they are formed near the resin-recoater interface with support structures. Those surfaces can accept more dye per unit area. If a color-critical channel is located on the upward-facing surface, its dye appearance may be lighter than the same color on a downward-facing wall. Work instructions should specify orientation, surface treatment, and color measurement location.
In medical modeling, the use case is a segmented anatomical reference model in which dye is deposited at specific vascular, ductal, or tumor boundaries. The color contrast is visible-light only and does not confer radiopacity. The part should not be represented as a permanent implantable device unless the final constructed device undergoes biocompatibility evaluation under the ISO 10993 series. For industrial flow visualization, a translucent Y-C 9300 part can be dyed at inlet and outlet zones or along manifold walls to support instructional or quality-training models. The material is not classified in public documentation as a chemical-resistant service material; repeated exposure to aggressive coolants or autoclave cycling should be validated against ASTM D543-21 and autoclave-specific test protocols before use.
Y-C 9300 occupies a different process taxonomy from multi-material jetting because color is introduced after photopolymerization rather than jetted during layer deposition. A single-vat SLA material avoids multiple printheads and soluble support material, but the color gamut is narrower and color placement is limited to accessible surfaces. Compared with Accura ClearVue, which is specified for optical clarity and water-resistant prototypes, Y-C 9300 is formulated for post-dye contrast; optical transmission after dye application is intentionally modified. Compared with Accura 60, a polycarbonate-like resin with specified tensile and thermal properties, Y-C 9300 should not be assumed to match the same tensile or heat deflection values. The user must compare the current datasheets because secondary databases do not provide a consistent cured property set for Y-C 9300.
Compared with Accura CastPro, a castable pattern resin designed for ash-free investment casting burn-out, Y-C 9300 is not a designated casting material and should not be used for direct investment casting without empirical ash-content and thermal decomposition testing. The selective colorability of Y-C 9300 is not a direct substitute for multi-color 3D printing in which each voxel carries a specified colorant; instead, it is a lower-complexity method for adding post-print contrast to a monolithic SLA part. Direct property comparison with Accura 25 is also not relevant because Accura 25 is a polypropylene-like ductile material with higher elongation and lower heat deflection temperature than many clear or visual-grade SLA resins. If snap-fit or living-hinge behavior is required, Accura 25 or Accura Xtreme should be specified based on their own datasheet properties.
Machining and polishing change the dye uptake rate because they alter surface texture and remove the outer cured skin. Dyed regions may appear darker in recessed areas where dye is retained by capillary action and lighter on polished zones where surface burnishing reduces dye uptake. If secondary machining is performed after dyeing, the freshly cut surface will not carry the same color as the original surface, and edge lines can appear white or translucent. To avoid this, critical color features should be machined before dyeing, or a small color calibration coupon should be prepared with the same machining sequence and measured with ISO 11664-4:2008 ΔE*.
Surface roughness before dyeing should be recorded. A non-contact profilometer or stylus instrument calibrated to ISO 21920-2:2021 can quantify Ra; batch-to-batch color variation may correlate with roughness changes if the machining insert or layer thickness is changed. If the part requires hard edge definition, a sacrificial skin or masked boundary can be removed after dyeing, but the removal process must not smear dye into previously masked areas. Solvent cleaning after dyeing should be minimized; if cleaning is unavoidable, use a solvent that does not extract the dye and verify the ΔE* shift on a witness coupon.
Resin storage and vat replenishment affect colorability. The liquid resin should be stored in sealed, opaque containers between 15 °C and 30 °C. If the resin is exposed to cold storage below 10 °C, it should equilibrate to the vat operating temperature before the build is started. Returned resin should be filtered through the mesh size specified in the SLA system manual to remove partially cured particles. The vat should be shielded from ambient UV and blue-rich inspection lighting that can initiate slow surface polymerization. If the resin is repeatedly heated and cooled, viscosity may drift; a rotational viscometer check at fixed shear rate and temperature can identify batch degradation before color contrast is affected.
Material compliance claims must be verified against the current safety data sheet and regulatory documentation. The resin may be subject to REACH Regulation EC No 1907/2006 and RoHS Directive 2011/65/EU; absence of an intentionally added colorant does not eliminate the need for article-level assessment. Operational boundaries include restricting dye carriers to compatible solvents, avoiding amine-based accelerators that can cause premature crosslinking in the vat, and maintaining the supplier-specified post-cure UV dose. Process capability should be demonstrated with a color calibration coupon. If the coupon’s ΔE* against the master standard exceeds the line-specific limit, root cause is typically incomplete post-cure, wash-solvent residue, or drying humidity. Published data for this specific configuration is limited; therefore, production limits must be established on the actual SLA platform and not transferred from another Accura SL grade.
