| HS Code | 140917 |
| Product Name | Henkel Loctite 3D IND405 3D Printing Resin, Black |
| Manufacturer | Henkel |
| Technology | Stereolithography (SLA) / Digital Light Processing (DLP) |
| Wavelength | 405 nm |
| Color | Black |
| Density | 1.10 g/cm³ |
| Viscosity | 1,200 cP at 25°C |
| Tensile Strength | 50 MPa |
| Tensile Modulus | 1,800 MPa |
| Elongation At Break | 20% |
| Flexural Strength | 75 MPa |
| Flexural Modulus | 2,000 MPa |
| Notched Izod Impact Strength | 50 J/m |
| Hardness | 80 Shore D |
| Heat Deflection Temperature | 70°C at 0.45 MPa |
| Glass Transition Temperature | 80°C |
| Water Absorption | 0.5% |
As an accredited Henkel Loctite 3D IND405 3D Printing Resin, Black factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Black Henkel Loctite 3D IND405 resin comes in a 1 kg light-blocking plastic bottle with safety cap and hazard labeling. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with palletized Henkel Loctite 3D IND405 3D Printing Resin, Black, securely stowed and braced for transport. |
| Shipping | Henkel Loctite 3D IND405 Black ships as a light-sensitive photopolymer resin in sealed, opaque containers. It is generally not classified as dangerous goods for transport under DOT/IATA/IMDG. Store cool, dry, away from UV light. Use secondary containment; consult the SDS and local carrier rules. |
| Storage | Store Henkel Loctite 3D IND405 3D Printing Resin, Black, in its original, tightly closed container, upright, in a cool, dry, well-ventilated area. Protect from direct sunlight, UV light, heat, sparks, and ignition sources. Recommended storage temperature is 18–25 °C (65–77 °F). Avoid freezing. Keep away from oxidizers, food, and drink. Follow SDS and local regulations. Use within stated shelf life. |
| Shelf Life | Shelf life is 12 months from date of manufacture when stored unopened at 18–25°C in original container, away from light. |
On DLP/LCD vat photopolymerization platforms operating at 385–405 nm, Henkel Loctite 3D IND405 Black is processed as an opaque, high-toughness acrylate resin for functional prototypes and short-run production parts. The carbon black loading suppresses internal light scatter in the vat and produces a dense black finish, but it also reduces optical penetration relative to clear resins. Printing parameters therefore cannot be transferred from translucent low-colour photoresins to this grade without revalidation of exposure dose, layer height, and bottom-layer adhesion. Baseline mechanical data in the manufacturer’s technical datasheet are generated according to ASTM D638-14 and ASTM D256-10; these values should be treated as screening inputs rather than design allowables because build orientation, post-cure uniformity, and machine-specific irradiance introduce deviations larger than the typical coupon-to-coupon laboratory spread.
| Application point | Standard or regulatory reference | Relevant test condition |
|---|---|---|
| Tensile strength and elongation at break | ASTM D638-14 / ISO 527-2:2012 | 23 °C, 50% RH, production-orientation coupons |
| Flexural properties | ASTM D790-17 / ISO 178:2019 | Three-point bending, span-to-thickness 16:1 |
| Notched Izod impact | ASTM D256-10 | Notched specimens, 23 °C |
| Shore hardness | ASTM D2240-15 | Durometer D scale, 15 s delay |
| Heat deflection temperature | ASTM D648-16 | 0.455 MPa flexural stress |
| Water absorption | ASTM D570-22 | Immersion 24 h, 23 °C |
| EU material compliance | EU RoHS Directive 2011/65/EU Annex II; REACH Regulation (EC) No 1907/2006 Article 33 | Declaration via Henkel regulatory datasheet |
Across low-volume automotive wiring harness programmes, the resin is used for black prototype cable clips, electrical connector lock tabs, and routing brackets that must survive repeated snap insertion during harness assembly trials. Build orientation is selected so that the primary snap deflection axis lies parallel to the XY plane, because interlayer adhesion along the Z axis governs failure in thin cantilevers below 1.2 mm thickness. Clip bodies are typically printed at 50 µm layer height with 2–4 perimeter walls and 15–20% internal cross-linked infill; unsupported overhangs exceeding 0.5 mm require angle-limited support structures that leave minimal witness marks on retention faces. After solvent washing in isopropanol not longer than 5 min to limit solvent uptake, parts are post-cured in 405 nm flood lamps under the manufacturer’s stated dose window, followed by a thermal soak where permitted by the technical datasheet. Mechanical acceptance for snap retention on automotive-grade nylon reference clips includes comparison against live insertion force values measured on a tensile tester equipped with a 100 N load cell; published data for this specific clip configuration is limited, so print-batch validation remains mandatory.
For consumer electronics enclosure design, IND405 Black is used for short-run housing covers, battery compartments, and internal speaker baffles where aesthetic black surfaces and ductile failure modes are required before injection-moulding investment. Cantilever snap fittings designed with a 3:1 length-to-thickness ratio and 0.6–1.0 mm nominal beam thickness are printed with the beam in the XY build plane to retain the highest elongation values of the resin. The dark pigment system permits optical inspection of glossy black surfaces, but surface roughness from layer stepping at 50 µm must be removed by vapour smoothing or fine grit finishing before dimensional inspection of snap engagement depth. When validated according to ISO 527-2:2012 tensile bars machined from flat plaques, elongation at break satisfies short-term snap assembly requirements but should not be extrapolated to cyclic snap fatigue; published data for living-hinge endurance in black IND405 is limited. Shore hardness values reported under ASTM D2240-15 support screw retention but are below glass-filled engineering thermoplastics. Pre-tapping of M2 or M3 threaded bosses is performed at 200–500 rpm using low flute-count carbide drills to prevent heat-induced microcracking at the thread root.
When industrial tooling production uses IND405 Black, the main process conflict is that the same pigment package that delivers opacity and low light-scatter also attenuates 405 nm radiation, compressing the working curve and reducing tolerance to exposure drift. On DLP projection systems with 8–16 mW/cm² irradiance measured at the vat surface, through-cure of 1.0 mm vertical walls may require additional exposure margin relative to clear resins. Process engineers report batch-to-batch variation in recoat behaviour when ambient temperature falls below 20 °C; the resin viscosity increases sufficiently to create fill-in defects at fine perforations in nest fixtures. For this reason, heated vat inserts or temperature-controlled rooms at 25–30 °C are specified for continuous production of jigs with 0.8 mm locating holes. The operational boundary is defined by heat deflection temperature measured per ASTM D648-16 at 0.455 MPa; jigs used in oven-cure or soldering-adjacent process steps above that threshold exhibit dimensional drift under clamp load. Service life in collisional end-of-arm tooling is governed by notched Izod impact rather than tensile yield, so prototype gripper jaws are best printed with solid infill and 1.5 mm minimum wall thickness around insert threads.
For prototype optical sensor brackets, black housings are used to suppress 650 nm and 808 nm stray-light artefacts in machine-vision enclosures and LiDAR prototype mounts. Mating faces for optical bench assemblies are produced with 0.2 mm print resolution in the XY plane and are post-machined on a 20,000 rpm three-axis spindle using uncoated carbide end mills at feed rates below 300 mm/min; this machining step removes not only layer steps but also surface resin that may retain trace solvent after washing. Because black surfaces absorb rather than reflect, laser scanning of mounting plane flatness uses 0.020 mm gauge repeatability fixtures, and acceptance is based on ISO 1101:2017 geometric dimensioning data collected from at least 10 production-replicate brackets per build. Threaded inserts are installed with heat staking at 120 °C tip temperature; published data for pull-out performance of this specific resin-insert combination is limited, so mechanical testing per ISO 527-2:2012 on insert-bearing bosses is required before deployment in vibration-exposed optical assemblies.
Before consumer product housings are submitted to accelerated durability testing, the operational boundary of unpainted IND405 Black must be established. IND405 Black is an acrylate photopolymer and does not behave like carbon-black-filled polypropylene or PC/ABS under ISO 4892-2:2013 xenon or ISO 4892-3:2016 UV fluorescent exposure. Although the black pigment masks chromophoric yellowing, it does not prevent surface embrittlement and microcracking after prolonged UV exposure; unpainted outdoor structural parts are outside the demonstrated operational window. Chemical resistance follows the same limitation: contact with strong oxidative acids above 10 vol% or ketone-containing cleaning solvents causes surface etching and stress cracking. Applications are therefore confined to indoor enclosures, test fixtures, and short-term exterior prototypes with an overcoating system qualified by the assembler. Dimensional stability is monitored after 24 h water immersion at 23 °C using ASTM D570-22; adsorption values are provided in the resin datasheet and must be added to tolerance stack-up calculations for humid environments above 60% RH.
Across unmanned aerial vehicle prototype programmes, thin-wall propeller guards and camera mounts are printed with 1.0–1.5 mm shell thickness, using internal lattice infill of 25% to reduce mass while preserving impact toughness. The black pigment prevents translucency in areas where LED status lights would otherwise bleed through, an advantage when installing avionics indicators. Mechanical testing of printed guards follows ASTM D256-10 notched Izod impact at 23 °C, but published data for dynamic crash impact at subzero temperatures is limited; therefore printed guards are restricted to prototype flight without certification value. Salt-spray corrosion does not apply to polymer bases, but moisture absorption in humid coastal air interacts with residual stresses from the build and can alter snap alignment over 72 h; humidity conditioning at 80% RH before dimensional inspection is recommended if service is expected in marine environments.
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Henkel Loctite 3D IND405 Black 3D printing resin is a single-component, black-pigmented photopolymer resin formulated for vat photopolymerization platforms that operate with 385 nm or 405 nm actinic light sources, including digital light processing (DLP), liquid crystal display (LCD) masking, and programmable photopolymerization (P3) systems. The material is supplied ready to use without monomer dilution or addition of cure accelerators. The black pigment is not solely cosmetic; it acts as an actinic absorber that truncates photon penetration depth and reduces lateral scatter during layer curing. This changes working curves relative to clear and translucent photopolymers and requires machine-specific exposure calibration before production. The resin is positioned within the Henkel industrial photopolymer portfolio as a rigid black engineering material. Specific cured mechanical values, viscosity, and density are provided in the manufacturer’s current technical datasheet and should be referenced against the test methods and post-cure schedule stated in that document. The classification of the material under transport, storage, and disposal regulations follows the Safety Data Sheet, not the technical datasheet.
For pigmented vat photopolymerization resins, the Jacobs working curve is modified by the absorption of the pigment in the actinic wavelength band. Clear acrylate systems typically exhibit a logarithmic relationship between cure depth and incident energy, with cure depth governed by photoinitiator concentration, molar absorptivity, and inhibitor level. The incorporation of black pigments raises the overall absorbance of the resin film, shrinking the depth at which absorbed energy exceeds the critical gelation threshold. On bottom-up DLP platforms with a build-plane irradiance of 2 mW/cm² to 8 mW/cm² at 405 nm, this can reduce cure depth by a factor that is dependent on pigment loading and photoinitiator concentration. Process engineers should generate a resin working curve on the target machine by printing hatch and depth arrays at stepped exposure times and measuring cured thickness after wash. Failure to recalibrate after switching from a clear resin to IND405 Black can produce interlayer delamination if underexposed, or dimensional deviation and unintended cure-through if overexposed. Because the pigment attenuates both incident and scattered light, edge acuity in the XY plane can improve, but z-axis overcure is simultaneously suppressed; layer thickness settings between 25 µm and 100 µm are common for this material class. Resin bath temperature should be maintained between 20 °C and 30 °C to stabilize viscosity and cure kinetics; higher temperatures increase radical mobility and reduce dark-cure inhibition, while lower temperatures raise viscosity and can retard recoating. Published data for this specific configuration is limited to machine-qualified parameter sets, and any change in projector irradiance, release film, or pigment dispersion batch should trigger full exposure verification.
Mechanical property reporting for IND405 Black is method- and orientation-dependent. Tensile properties are commonly measured on ASTM D638-14 Type I or ISO 527-2:2012 1BA specimens, flexural properties on ASTM D790-17 or ISO 178:2019, impact resistance on ASTM D256-10 or ISO 180:2019, hardness on ASTM D2240-15 or ISO 868:2003, and heat deflection temperature on ASTM D648-18 at 0.455 MPa or ISO 75-2:2013 Method B. Specimens should be conditioned at 23±2 °C and 50±5 % relative humidity for at least 24 h unless the manufacturer’s procedure states otherwise. Printed photopolymers retain anisotropic conversion gradients, and black IND405 parts can show greater XY-to-Z differences than transparent grades because the pigment limits through-cure and creates a residence-time-dependent conversion profile. Design allowables should not be based on bulk resin values alone; tensile and flexural results should be generated at multiple print orientations and after the specified post-cure, thermal aging, and fluid exposure cycles that represent the service environment. When the manufacturer’s datasheet provides only a single post-cure condition, additional testing is required for load-bearing applications. Published data for this specific configuration is limited; therefore, a written test plan linked to ASTM D638-14 and ASTM D648-18 is recommended before committing production tooling.
The black pigmentation of IND405 is the primary source of behavioral differences with clear and translucent photopolymers. Clear grades permit longer photon penetration, enabling faster layer cure and thicker working depths, but they also allow lateral light scattering that can round edges, fill micro-textures, and shift z-dimension. Black grades attenuate actinic radiation, producing a more confined cure zone and improved replication of fine recesses and edges, at the cost of requiring higher exposure dose or reduced layer thickness. Compared with high-toughness grades such as the Loctite 3D 3843 class, IND405 Black is specified with data reflecting a rigid, lower-elongation response; the black grade is therefore less suitable for snap-fit or high-recoverable-strain geometries unless the design strain is below the measured yield strain. Compared with high-temperature resins, IND405 Black may not provide class-leading heat deflection temperature under all post-cure regimes, and continuous service temperature should be validated by heat soak exposure rather than inferred from HDT alone. In terms of chemical resistance, black acrylate photopolymers typically follow the solvent resistance of the base resin network; pigment loading does not necessarily improve resistance to aggressive fluids, and the black surface may mask staining or microcracking that would be visible on clear parts. Product selection should therefore separate aesthetic opacity from functional resistance. The black color also provides a molded-part appearance without secondary coating, but it can complicate inspection for cracks and incomplete wash residues; UV-dye penetrant inspection with 365 nm illumination or x-ray computed tomography may be needed for critical parts. Published data for this specific configuration is limited, especially for long-term fluid exposure across automotive coolants and hydrocarbon condensates.
Material handling and vat conditioning introduce several process variables. Uncured IND405 Black should be stored in the original opaque container at 15 °C to 30 °C, away from direct sunlight and high-humidity environments. Before printing, the material should be gently mixed or tumbled to redisperse black pigment without generating bubbles; degassing under vacuum at 30 kPa to 50 kPa absolute can remove entrained air from pigmented resin. Viscosity is temperature sensitive, and low-viscosity black resins are typically supplied for DLP recoating; however, the printed layer may retain micro-bubbles if the resin is not allowed to settle after agitation. In production vats, filtration through 25 µm to 50 µm mesh can prevent pigment agglomerates from damaging the release film, but the filter must not remove dispersed pigment. Batch-to-batch variance in pigment dispersion can shift the working curve and final color density; incoming material should be checked with a spectrophotometric drawdown or an exposure matrix before release to manufacturing. The resin is moisture-sensitive in the cured-state sense that uncured residual monomer can absorb water and alter green properties; vat covers should be closed during idle periods, and condensation on the build platform should be avoided because water droplets can create localized inhibition and surface defects. Published data for this specific configuration is limited; process logs recording ambient RH, resin temperature, and exposure dose per batch are the only reliable control basis.
Green-state IND405 Black parts remain partially converted and exhibit lower crosslink density than fully post-cured components. This condition permits support removal and initial machining with reduced risk of brittle fracture, but it also imposes a narrow handling window because unpolymerized monomer at the surface can plasticize the network and cause green creep. The recommended sequence includes removal from the build plate while the part is still supported, followed by washing in the solvent specified by the manufacturer—typically isopropanol or a proprietary wash solvent—using ultrasonic agitation for no longer than the time required to remove residual liquid resin. Prolonged solvent immersion can swell the green part, distort thin walls, and extract photoinitiator residues that later interfere with post-cure. After washing, parts should be blown off with filtered compressed air and allowed to dry under low-humidity conditions before UV post-cure. If the green part is machined, sharp tools with low cutting forces should be used because the uncured resin has lower heat deflection and can smear; cutters with chip evacuation features reduce re-welding of abraded resin onto the surface. The transition to full hardness occurs during post-cure, which for 405 nm flood lamps is commonly performed in chambers with controlled temperature and programmable irradiance; post-cure time and temperature are product-specific and should follow the current technical datasheet. Under-curing leaves residual acrylate unsaturation that can exude, produce surface tack, or reduce chemical resistance. Over-curing can induce thermal yellowing, shrinkage stress, and embrittlement, especially in black resins where absorbed light can generate localized heating. Published data for this specific configuration is limited; verification of surface conversion by attenuated total reflectance–Fourier transform infrared (ATR-FTIR) at the acrylate 810 cm-1 or 1630 cm-1 bands is a useful in-process control. The 810 cm-1 band is associated with acrylate vinylene out-of-plane deformation, while the 1630 cm-1 band merges with aromatic absorption; both should be tracked against a fully cured reference.
In automotive and industrial fixture applications, black IND405 is typically evaluated for black housings, brackets, covers, ducting, and assembly aids where opacity, fine-feature fidelity, and stiffness are more important than high recoverable elongation. For engine-adjacent locations, the part should be validated against the OEM thermal cycling and fluid exposure schedule; heat deflection temperature under 0.455 MPa is a short-term screening parameter and does not guarantee continuous load-bearing performance at elevated temperature. Long-term heat aging is commonly conducted per ASTM D3045-18 or ISO 2578:1993, with tensile or flexural testing after aging to quantify embrittlement. Fluid immersion testing should follow the actual contact fluids and temperatures, because photopolymer networks can absorb polar solvents, plasticize with coolant additives, or microcrack under cyclic drying. The black surface reduces visible staining but can hide microcracks; visual inspection should be supplemented with tactile probing or imaging under 365 nm light after dye penetrant application. For jigs and fixtures, the main failure modes are hole wear, edge chipping, and dimensional creep under sustained clamp loads; bushing inserts, torque limits, and clearance rework allowances are standard conversion steps from metal or nylon tooling. The resin is not formulated for outdoor Weatherometer service without a UV-blocking coating because the acrylate network may yellow or erode; if outdoor use is required, testing per ASTM G154-23 or ISO 4892-3:2016 is necessary. Published data for this specific configuration is limited, so long-term application qualification should be conducted on printed specimens rather than extrapolated from short-term bulk property sheets.
Regulatory compliance for uncured IND405 Black and its cured parts is controlled by the Safety Data Sheet and procurement specification. The uncured resin should be handled with nitrile gloves and sealed goggles because methacrylated monomers can be skin sensitizers; local exhaust ventilation or carbon-filtered fume extraction is recommended for post-cure ovens. Cured parts should be checked for residual monomer migration when the application involves skin contact or electrical contacts, using extraction testing according to the end-market standard. The product may be subject to REACH Regulation (EC) No 1907/2006, CLP Regulation (EC) No 1272/2008, and RoHS Directive 2011/65/EU as amended; the manufacturer’s current chemical compliance statement should be consulted for Substances of Very High Concern and restriction status. Waste resin, cleaning solvents, and uncured support material must not be discharged to municipal drains and should be disposed of according to local hazardous waste regulations. The black pigment can complicate recycling of printed parts because the cured thermoset network is not melt-reprocessable, and the pigment cannot be separated without pyrolysis or mechanical comminution. Published data for this specific configuration is limited regarding recyclability and end-of-life pathways; any customer-facing environmental claim should be explicitly limited to the current data sheet statements.
