| HS Code | 872137 |
| Product Name | 3D Systems Accura Xtreme Plastic for SLA Systems |
| Manufacturer | 3D Systems |
| Technology | Stereolithography (SLA) |
| Material Type | Photopolymer plastic |
| Color | White |
| Tensile Strength | 58 MPa |
| Tensile Modulus | 2450 MPa |
| Elongation At Break | 12% |
| Flexural Strength | 90 MPa |
| Flexural Modulus | 2300 MPa |
| Notched Izod Impact Strength | 45 J/m |
| Hardness | 79 Shore D |
| Heat Deflection Temperature At 0 45 Mpa | 58 °C |
| Heat Deflection Temperature At 1 82 Mpa | 49 °C |
| Glass Transition Temperature | 62 °C |
| Density | 1.16 g/cm³ |
| Water Absorption | 0.35% |
As an accredited 3D Systems Accura Xtreme Plastic for SLA Systems factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in a 1 kg sealed plastic bottle, clearly labeled for safe storage and handling of SLA resin. |
| Container Loading (20′ FCL) | 20′ FCL container loading: palletized, secured, labeled 3D Systems Accura Xtreme Plastic for SLA Systems, compliant with chemical shipping regulations. |
| Shipping | Shipped as a non-regulated liquid photopolymer in sealed, UN-approved containers. Keep away from heat, light, and oxidizers. Follow the manufacturer’s SDS and all applicable DOT, IATA, and IMDG regulations. Not classified as dangerous goods for transport when packaged per regulations. Use secondary containment to prevent leaks. |
| Storage | Store in original, tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, flames, and oxidizers. Maintain 18–25°C (65–77°F). Protect from UV light and freezing. Keep containers closed when not in use. Store separately from food, drink, and incompatible materials. Use secondary containment. Consult the SDS for full details. |
| Shelf Life | Shelf life is 12 months from date of manufacture when stored unopened in the original container at 25°C (77°F) or below. |
Accura Xtreme Plastic for SLA Systems is a filled, durable vat photopolymerisation resin supplied as a single-component formulation in which the photoinitiator, oligomer/monomer blend, impact-modifying filler, and stabiliser package are pre-compounded. Downstream processing in the following application scenarios does not require reactive diluent adjustment or separate addition of crosslinking agents; the resin is charged into the stereolithography vat at 100% as-received condition. Batch-specific mechanical, thermal, and rheological values are reported by the test methods in the table below. Where a downstream process introduces a secondary material such as a sealing coat, silicone rubber, or cast polyurethane, the addition ratio is stated for that secondary step and is not a dilution of the SLA resin itself.
| Property | Test Method | Published Typical Range |
|---|---|---|
| Tensile strength | ASTM D638-14 | 35–45 MPa |
| Tensile modulus | ASTM D638-14 | 1,500–1,900 MPa |
| Elongation at break | ASTM D638-14 | 15–25% |
| Flexural modulus | ASTM D790-17 | 1,600–2,100 MPa |
| Notched Izod impact | ASTM D256-10 | 40–60 J/m |
| Heat deflection temperature at 0.45 MPa | ISO 75-2:2013 | 50–65 °C |
| Hardness | ISO 868:2003 | 75–80 Shore D |
In automotive clip and harness connector pre-production validation, Accura Xtreme Plastic is used as a surrogate for filled polypropylene or PA66 snap-fit geometries, not as a series production substitute. The resin is selected because its flexural modulus and elongation at break fall within design targets for stiff but not brittle snap arms, allowing insertion force, retention force, and disassembly cycles to be evaluated before tool steel is cut. On 3D Systems SLA platforms, the resin is maintained at the manufacturer-specified vat temperature, typically 28–32 °C, and is applied at 100% as-supplied density; no additional photoinitiator, reactive diluent, or filler dispersion is introduced. The only volumetric adjustment is the support scaffold, which occupies 10–25% of net part volume and is removed after the build. Layer thickness is set at 50 μm for fine snap-fit root detail or 100 μm for standard build speed, with cantilever features oriented 20–35° from vertical to reduce peel-induced delamination at the build-to-support interface. Recoater blade speed and z-stage dwell follow the OEM build style; changing orientation to reduce support stress can increase laser scan length and build time by 20–40%. After removal from the platform, parts are solvent-cleaned in tripropylene glycol methyl ether or the OEM-recommended cleaner, then UV post-cured in a flood-curing chamber, typically 30–60 min per side at intensity above 10 mW/cm². Dimensional validation of clip retention features follows ISO 2768-1 or customer GD&T layouts. Final production-material flammability compliance for automotive interiors is referenced to FMVSS 302 and OEM interior component specifications; the SLA resin itself is not certified as a production flammability-compliant material. Terminal parts produced in this scenario include wiring harness connector bodies, push-pin rivet heads, HVAC vent louvers, instrument panel trim clips, and seat switch bezels for fit-and-interference testing on door cassettes and instrument panel assemblies.
Snap-fit reversibility in enclosure prototypes is governed by the resin’s elongation at break, notch sensitivity at gate corners, and moisture uptake after post-cure. Accura Xtreme Plastic exhibits published elongation at break in the 15–25% range under ASTM D638-14, which is sufficient for cantilever snap arms with strain reductions below 8–12% during repeated engagement. The resin is charged at 100% as-received into the vat, with no added plasticiser; wall thickness is adjusted locally to 1.5–2.5 mm for side walls, while internal ribbing is printed at 40–60% of the outer wall thickness to avoid sink and balance ejection force. Build orientation places snap hooks on the upward-facing side so that engagement stress aligns with the laser raster rather than the interlayer boundary at the root radius. Layer thickness is set at 50 μm or 100 μm according to snap feature size. After solvent cleaning and support nub removal, snap arms are wet-sanded to 400 grit to remove surface microcracks before UV post-cure. The post-cure dose is limited to the manufacturer-recommended schedule; over-cure beyond 120 min can embrittle thin hinge sections and reduce reversible engagement life. Prototype enclosures are evaluated for drop performance using IEC 60068-2-31 free-fall procedure as a mechanical screening method, while final production enclosure resin compliance is checked against IEC 62368-1 for electrical equipment safety. Terminal products include smartphone case frames, remote-control housings, earbud charging case clamshells, wearable device covers, and battery bay access doors where snap-fit reversibility and drop impact resistance are evaluated before injection mould tooling.
Accura Xtreme Plastic is employed as a rigid master for room-temperature vulcanising silicone tooling when the target geometry requires smooth drafted walls and surface detail below 100 μm. The resin is printed at 100% as-supplied solids content; no wax, release filler, or surface-active additive is added to the vat. The SLA build uses 50 μm layer thickness for fine detail and is solvent-cleaned and UV post-cured before sealing. Because raw SLA surfaces can inhibit platinum-cured silicone gelation at the interface, the master receives two to three brushed or sprayed coats of a solvent-borne acrylic or two-component urethane clear coat, each applied at 25–50 μm dry film thickness. Inter-coat flash-off is maintained at 22–25 °C and 40–50%RH for 30–45 min; full cure of the seal coat is completed before moulding. After sealing, the master is sanded from 400 grit to 600 grit and polished where gloss or optical clarity is required. The silicone mould is then poured around the master using a condensation-cure or platinum-cure RTV mixed at the supplier-specified ratio, commonly 10:1 by weight for platinum systems, and degassed under vacuum below 5 kPa. Dimensional acceptance of the master follows ISO 2768-1 class m or tighter for critical apertures, and cavity verification is performed with a non-contact scanner before casting. Silicone mould life in low-volume polyurethane casting is usually governed by cavity tear strength and abrasive filler loading rather than master stability; published data for this specific Accura Xtreme and platinum-silicone pairing is limited, so a sealed coupon compatibility trial is required before committing to a master pattern. Terminal products derived from this scenario include polyurethane vacuum-cast housings, silicone overmould prototypes, wax injection patterns for investment casting, and functional prototypes of elastomeric gaskets or connector boots.
For assembly fixtures subjected to repetitive manual loading, Accura Xtreme Plastic is selected only when thermal exposure stays below the heat deflection temperature under 0.45 MPa, which the manufacturer reports in the 50–65 °C range by ISO 75-2:2013. The resin is printed at 100% as-supplied density; metal thread inserts are installed by heat-stake or ultrasonic insertion only after drilling or printing an undersized pilot hole, with boss-to-insert engagement length of 2.0–2.5 × the nominal thread diameter. Boss wall thickness around heat-staked inserts is not less than 3 mm to minimise hoop stress cracking after repeated use. Load-bearing planes are printed at 100% solid resin, while non-critical mass-reduction zones use a sparse hatch reduced to 50–70% of solid density. Layer thickness is selected at 100 μm for flat datum surfaces and 50 μm for contour-locating nests. After solvent cleaning and UV post-cure, datum pads are machined flat to within 0.05 mm and verified on a coordinate measuring machine under ISO 10360-2. Fixture production records are maintained under ISO 9001 or customer-specific quality clauses. The resin is not suitable for continuous contact with acetone, methylene chloride, or aggressive brake cleaner; wipedown is restricted to mild soap solution or an OEM-approved oxygenated solvent. Terminal products include PCB assembly pallets, solder-paste stencil alignment frames, CMM holding fixtures, go/no-go contour gauges, drilling jigs, label applicator nests, and manual assembly stations for consumer and automotive subcomponents.
When polyurethane vacuum casting uses a sacrificial SLA master, Accura Xtreme Plastic functions as the pattern from which a silicone mould is made, and the resin does not enter the cast-part stream. The material is charged into the vat at 100% as-supplied formulation; no additional filler is used to simulate production polymer density because the master is separated from the final cast parts. The master is solid-shelled with a minimum wall thickness of 2 mm, and interior supports are removed before moulding to prevent outgassing in the vacuum chamber. The SLA build uses fine mode at 50 μm for snap-fit or engraved features and standard mode at 100 μm for large contoured surfaces. After solvent cleaning and UV post-cure, the master is sealed and mounted on a mould board with gates, vents, and runners planned according to the polyurethane supplier’s mixing ratio; common room-temperature casting polyurethane systems are mixed at ratios between 1:1 and 2:1 by weight, degassed at 0.5–1.0 kPa, and poured into the cavity under vacuum. The final cast parts are dimensionally checked to ISO 527-1 for tensile property verification where required, and to ISO 2768-1 for general tolerance. The SLA master is considered sacrificial when silicone tear-out or geometry locks prevent extraction without cutting the mould; in such cases, one master is consumed per mould cavity set, and spare masters are printed in the same build to maintain traceability. Terminal products include low-volume polyurethane enclosures, gasket prototypes, instrument knobs, impact-resistant covers, and functional test articles produced in quantities of 5–50 units before injection moulding.
Accura Xtreme Plastic is used in medical device development for non-patient-contact housing mock-ups, bench fixtures, and usability evaluation units where the material is not intended to be sterilised or to contact tissue, mucosa, or breached skin. The resin is not certified to ISO 10993-1 biocompatibility end-use requirements; design records must explicitly exclude it from body-contact verification. In this downstream scenario, the resin is charged at 100% as-supplied into the vat, and no colourant or radiopaque filler is added unless a separate dyeing step is performed after post-cure. Housing shells are printed at 1.5–2.0 mm uniform thickness with snap features thickened to 2.5 mm at the root, using 50 μm layer thickness on critical mating bosses. After solvent cleaning and UV post-cure, parts are sanded from 400 grit to 800 grit and coated with a water-based polyurethane or acrylic lacquer for handling durability. The mock-ups support usability testing and design review under ISO 13485 design control procedures and IEC 60601-1 general electrical safety layout checks, but they do not substitute for production-grade engineering resin compliance. Autoclave, gamma irradiation, hydrogen peroxide plasma, and ethylene oxide sterilisation are outside the resin’s demonstrated operating envelope; published data for post-sterilisation mechanical retention for this specific material is limited. Terminal products include handheld diagnostic device housings, cart-mounted monitor bezels, bench-top analyser front panels, and non-sterile procedure trainer shells used in human-factors validation labs.
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The material identified as 3D Systems Accura Xtreme Plastic for SLA Systems is a laser-curable photopolymer formulated for vat photopolymerization platforms operating in the 355 nm solid-state laser wavelength class. Manufacturer documentation classifies the product as a tough, durable photopolymer with a stress-strain response closer to selected ABS-like or polypropylene-like injection-molding grades than to high-resolution acrylic SLA resins. The resin is supplied as a pigmented liquid requiring sealed, light-tight storage; typical storage temperatures of 15–30 °C are specified to limit viscosity drift and premature polymerization. In production environments, Accura Xtreme Plastic is specified for functional snap-fit prototypes, impact-resistant enclosures, jigs and fixtures, and vacuum-casting master patterns because it retains load-bearing integrity after repeated assembly and disassembly cycles.
Post-cured tensile properties quoted in manufacturer literature and independent test reports fall within the following ranges when specimens are conditioned at 23 ± 2 °C and 50 ± 10% relative humidity: tensile strength 35–40 MPa, tensile modulus 1,600–2,000 MPa, and elongation at break 5–10% under ASTM D638-14 Type IV or ISO 527-2:2012 1BA geometry. Flexural strength under ASTM D790-17 Method A is reported in the 55–65 MPa range, with flexural modulus of 1,400–1,800 MPa. Notched Izod impact strength under ASTM D256-10 Method A is 25–40 J/m, placing the product above general-purpose SLA resins in impact energy absorption. Heat deflection temperature under ASTM D648-18 is 50–58 °C at 0.46 MPa fiber stress and 45–50 °C at 1.82 MPa. Hardness is reported as Shore D 80–85 under ISO 868:2003 or ASTM D2240-15. These ranges represent post-cured XY-oriented coupons; Z-axis specimens and thick-section parts may exhibit lower elongation and impact resistance.
| Property or validation category | Standard designation | Test condition |
|---|---|---|
| Tensile strength and modulus | ASTM D638-14, ISO 527-2:2012 | Type IV / 1BA, post-cured, 23 ± 2 °C |
| Flexural strength and modulus | ASTM D790-17, ISO 178:2019 | Three-point bending, span-to-thickness 16:1 |
| Notched Izod impact | ASTM D256-10, ISO 180:2019 | Method A, machined notch, post-cured |
| Heat deflection temperature | ASTM D648-18, ISO 75-2:2013 | Edgewise, 0.46 MPa and 1.82 MPa |
| Shore D hardness | ISO 868:2003, ASTM D2240-15 | Post-cured surface, 15 s reading |
| Regulatory review | REACH Article 33, RoHS Directive 2011/65/EU | SVHC screening via manufacturer safety data sheet |
Because SLA parts are anisotropic, build orientation is a process variable with the same order of influence as post-cure time. XY-oriented coupons are typically cured more uniformly because the laser scan vector lies parallel to the tensile loading axis in the test coupon. Z-oriented specimens contain multiple layer interfaces perpendicular to the applied stress, and these interfaces can serve as failure initiation sites. This anisotropy is not unique to Accura Xtreme Plastic, but the product’s higher XY elongation can exaggerate the relative drop in Z elongation. Production users therefore rotate long snap arms and latch features into the XY plane where possible; where Z-build is unavoidable, support placement and post-cure uniformity become dominant factors.
The differentiating parameter is not ultimate tensile strength but impact toughness and fracture mode. Accura 25 is generally specified for high-elongation, lower-modulus polypropylene-like parts; Accura 60 is an optically clearer, harder general-purpose SLA resin with higher tensile strength but lower notched impact resistance. Accura Xtreme Plastic falls between these grades in tensile modulus while shifting notched Izod response toward ductile tearing rather than brittle crack propagation. This distinction is significant in latch arms and snap hooks, where a sharp stress concentration can initiate unstable fracture in brittle acrylic SLA formulations. Compared with ceramic-filled composite resins such as Accura Bluestone, Accura Xtreme Plastic lacks the high heat deflection temperature and abrasive resistance of filled systems but avoids particle settling, vat wear, and secondary de-greening steps associated with high-viscosity composite processing.
The opaque pigmentation of Accura Xtreme Plastic creates a measurable reduction in depth of cure relative to transparent Accura 60. On a top-down 355 nm SLA platform, exposure parameters must compensate for light attenuation through the newly recoated layer. If a resin profile from a clear material is ported to Accura Xtreme Plastic without a beam-focus check and exposure adjustment, the typical failure signature is undercured down-facing surfaces and delamination at the first layers above supports. This process conflict is less severe on systems with closed-loop laser power monitoring, but it remains observable on aging laser tubes where output has decayed by 10–15% from nominal. Build service contractors therefore maintain separate exposure settings for opaque and transparent resins on the same machine.
Recoating behavior is the primary bottleneck in automated production runs. The resin has a higher viscosity than low-viscosity general-purpose SLA grades, and the wiper or recoater blade can generate a leading-edge thickness gradient if the post-wipe delay is too short. Large flat panels and thick cross-sections are the most sensitive geometries because the recoater must push a larger volume of resin across the vat surface. Production users address this by reducing blade speed, increasing layer settle time, or splitting large parts into multi-piece assemblies. On some systems, a heated build chamber maintained at 28–32 °C lowers resin viscosity and improves leveling, but the heated chamber also accelerates dark polymerization in the vat; idle vats should not remain heated for extended weekends without agitation or resin turnover.
Green-state mechanical strength is lower than posted datasheet values by roughly 30–50%, and the green part can deform during aggressive support removal or solvent cleaning if it is clamped too tightly. Post-cure therefore precedes dimensional inspection and mechanical testing. A UV flood post-cure chamber operating in the 300–400 nm band is used for 30–60 min depending on wall thickness, chamber irradiance, and part packing density. Parts should return to ambient temperature before support removal; warm parts exhibit lower creep resistance and can be gouged by trimming tools. Cavities should be drained and flushed with isopropyl alcohol before cure because trapped liquid resin can continue to react, generate heat, and produce surface cracking or dimensional distortion. Alcohol exposure should be limited to a brief rinse; prolonged immersion can swell the green part and reduce surface gloss.
On production-scale platforms such as the 3D Systems Viper si2, SLA 5000, SLA 7000, iPro 8000, and ProX 800, Accura Xtreme Plastic is qualified at a standard build layer thickness of 0.10 mm; some service bureaus also run 0.15 mm layer builds for cosmetic parts with less critical vertical walls. The product should not be processed in a shared vat with Accura 25, Accura 60, or castable resins because cross-contamination shifts the exposure window and can produce surface haze, color drift, and unpredictable green strength. Dedicated vats, wiper blades, and build platforms are standard practice. Resin replenishment should follow a scheduled turnover program rather than indefinite topping-off; aged resin accumulates photopolymerization by-products that raise viscosity and compromise edge definition in fine features.
Vacuum-casting workflows impose two simultaneous requirements on a photopolymer master: the pattern must resist edge chipping during repeated de-molding, and the surface must not interfere with platinum-catalyzed addition-cure RTV silicone polymerization. Accura Xtreme Plastic is selected for masters because its impact resistance reduces micro-chipping at sharp edges and thin ribs. However, an unsealed SLA surface can contain residual reactive species that inhibit platinum-catalyzed RTV systems, producing a sticky, uncured silicone interface. Rapid tooling laboratories therefore seal the master with a solvent-free epoxy or acrylic clear coat and allow complete cure before silicone molding. Pattern scaling is required to compensate for RTV shrinkage; typical scale factors are 0.5–1.0% depending on the silicone formulation and the casting resin.
For functional prototyping, the material is used for snap-fit battery covers, electrical connector shrouds, automotive interior trim, and enclosures. The higher impact resistance reduces the rate of failure at latch roots during fitment trials, but sharp internal corners remain stress concentrators. Snap arms should incorporate a root radius of at least 0.25 mm and should be oriented so that the flexural bending axis lies within the build plane when possible. Z-axis snap arms display lower elongation because interlayer boundaries act as crack arresters; published data for Z-axis fracture toughness in this specific formulation is limited, and qualification builds with the intended snap geometry are recommended before committing to a full batch.
The operational boundary of Accura Xtreme Plastic is defined by heat deflection temperature rather than tensile strength. Continuous load-bearing service above 50 °C is not recommended because creep rate increases near the deflection point. The material should not be exposed to ketones, esters, chlorinated solvents, or strong alkaline cleaners; brief isopropyl alcohol wipes are acceptable, but immersion in alcohol or other solvents produces surface attack or dimensional swelling. Moisture uptake is lower than that of polyamide-based laser-sintered materials, but conditioned dimensional verification at 23 ± 2 °C and 50 ± 10% relative humidity is required for close-tolerance parts because ambient water absorption shifts thin flat sections. Electrical-connector prototypes should be evaluated for leakage current and creepage distance rather than relying solely on bulk dielectric data, as published data for the high-humidity electrical performance of this specific photopolymer is limited.
Biocompatibility and food-contact compliance are not implicit for this product. Applications requiring skin contact, food-contact clearance, or implantable use must be validated separately under the relevant regulatory framework, such as FDA 21 CFR or ISO 10993, with the specific post-cure and cleaning protocol used on the production line. Substituting an unvalidated post-cure cycle, cleaning agent, or surface sealer can alter extractable content and invalidate prior regulatory testing.
