Mitsubishi PC-ABS 3D Printing Filament
- Название продукта: Mitsubishi PC-ABS 3D Printing Filament
- Сайт Factroy: Округ Юду, Ганьчжоу, Цзянси, Китай
- Запрос цены: admin@ascent-chem.com
- Производитель: Ascent Petrochem Holdings Co., Limited
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- Mitsubishi PC-ABS 3D Printing Filament is typically used in formulations when processing temperatures and moisture content must be controlled within specific ranges.
| Код ТН ВЭД | 691648 |
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Automotive interior development programs routinely substitute fused deposition modeling with Mitsubishi PC-ABS filament for injection-molded polycarbonate/acrylonitrile-butadiene-styrene components when short-run validation must replicate heat resistance, snap-fit behavior, and dimensional tolerance without cutting steel. For HVAC vent louver prototypes, the strand is deposited at an extrusion width of 0.4 mm and a layer height of 0.15–0.20 mm to maintain blade clearance of ±0.2 mm after sanding. Louver assemblies exposed to cabin soak temperatures up to 90 °C are annealed at 105 °C for 1 h in a forced-circulation oven; the heat deflection temperature of PC-ABS measured under ISO 75-2:2013 method A at 1.8 MPa is generally reported in the range of 95–110 °C, which is adequate for upper dashboard air outlets but not for engine-side components. Impact-modified ABS domains contribute ductile snap-fit retention for bezel tabs; a notched Charpy impact result of 10–25 kJ/m² under ISO 179-1:2010 at 23 °C is attainable only with complete interlayer fusion, which requires a heated chamber maintained at 70–80 °C and a build plate set to 110–120 °C. Open-chamber machines without active ambient heating exhibit visible corner lift on footprints above approximately 120 mm × 120 mm, because the temperature gradient between the 110–120 °C bed surface and 23–25 °C shop air produces anisotropic shrinkage in the ABS-rich phase. Printed trim clips are then tested with 50 insertion/removal cycles using a universal tester equipped with a 1 kN load cell and a crosshead speed of 50 mm/min; acceptable prototypes show no stress whitening at the attachment boss and no permanent set greater than 0.15 mm.
What Limits Layer Bond Strength in Printed Assembly Jigs at Elevated Room Temperatures?
In PC-ABS filament, the critical processing variable for load-bearing assembly jigs is not bed adhesion but interlayer cohesive strength along the Z-axis. A nozzle temperature of 270–280 °C is preferred on all-metal hot ends fitted with a 0.4 mm brass or plated copper orifice; operation below 260 °C increases melt viscosity and creates weak bond lines with visible micro-porosity, while sustained operation above 290 °C accelerates thermo-oxidative chain scission in the polycarbonate phase, producing amber discoloration and a measurable loss in Z-direction tensile strength. The practical mid-range window is therefore approximately ±5 °C, and the extruder thermistor should be checked against a probe thermocouple inserted into the melt chamber because heater-block set-point error of ±8 °C has been observed on low-cost machines. At a layer height of 0.2 mm and extrusion width of 0.4 mm, a print speed of 60 mm/s corresponds to a volumetric flow rate of 4.8 mm³/s; unmodified stock hot ends with a nominal output below 10 mm³/s should not exceed 80 mm/s because melt-pressure pulsation then produces cyclic under-extrusion. Z-axis ultimate tensile strength in printed PC-ABS is commonly reported between 20–35 MPa when raster orientation, chamber heating, and drying are optimized, compared with 38–50 MPa in the XY plane; published data for this specific Mitsubishi filament configuration is limited, so first-article qualification for each jig geometry is warranted. Before printing, the filament is dried at 80 °C for 4–6 h in a desiccant air dryer to a residual moisture level below 0.02 wt%. Moisture above that threshold hydrolyzes the carbonate linkages in the polycarbonate phase at melt temperature, generating surface splay, microvoid formation, and lower notched impact strength under ISO 179-1:2010 relative to dry material. Load-bearing jigs are printed with 80–100% rectilinear infill, 6 perimeter shells, and a ±45° alternating raster angle; this layup rotates the weak bond plane away from the primary bending stress vector and delays delamination under clamping loads. For jigs exposed to ambient temperatures above 40 °C during electronics assembly, an 8 h print run at a chamber temperature of 75 °C is preferred, and the part is allowed to cool to below 50 °C before removal to prevent dimensional distortion.
| Parameter | Open-frame printer | Passively enclosed printer | Actively heated chamber |
|---|---|---|---|
| Nozzle temperature | 265–280 °C | 270–285 °C | 270–280 °C |
| Bed temperature | 100–110 °C | 105–115 °C | 110–120 °C |
| Chamber ambient | 20–25 °C | 35–45 °C | 70–80 °C |
| Cooling fan duty | 0–20% | 0–15% | 0–10% |
| Maximum footprint before corner lift | 120 mm × 120 mm | 180 mm × 180 mm | >300 mm × 300 mm |
| Print speed at 0.2 mm layer height | 30–50 mm/s | 40–60 mm/s | 40–60 mm/s |
| Drying before use | 80 °C for 4–6 h | 80 °C for 4–6 h | 80 °C for 4–6 h |
In power distribution unit prototype enclosures, unmodified Mitsubishi PC-ABS filament is used for form, fit, and limited electrical safety evaluation, but it must not be substituted for injection-molded flame-retardant production compounds without explicit UL 94 V-0 certification on the printed wall thickness. Standard unfilled PC-ABS blends typically achieve UL 94 HB at 1.5–3.0 mm, and a printed part with internal voids or delamination may fail even that classification because air paths accelerate flame propagation. Glow-wire testing under IEC 60695-2-11 at 550 °C for unattended appliance applications should be conducted on injection-molded plaques of the target production compound rather than on FDM specimens unless the printed product itself is the end-use article. Dielectric strength of void-free PC-ABS at 3.0 mm is typically reported at 18–25 kV/mm under IEC 60243-1, but layer-line micro-cavities reduce puncture resistance; printed enclosures for 24 V industrial control systems are therefore acceptable when the design requires proof against accidental contact rather than high-potential insulation. Enclosure covers are printed with a wall thickness of 2.5–3.0 mm, a layer height of 0.15 mm, and solid infill to reduce internal void volume. Heat-set threaded inserts are specified with oversize bosses and a minimum boss wall thickness of 4.0 mm to prevent circumferential stress cracking. The material has no intrinsic electromagnetic shielding effectiveness; if the enclosure must meet conducted emissions criteria, a post-print electroless copper or nickel coating is required, and coating adhesion is verified by cross-cut test per ISO 2409:2020.
| Standard | Test | Condition | Expected range | Limitation |
|---|---|---|---|---|
| ISO 527-2:2012 | Tensile strength | XY plane, 50 mm/min, 23 °C | 38–50 MPa | Z-axis values lower |
| ISO 178:2019 | Flexural modulus | 23 °C | 1800–2500 MPa | Printed voids reduce stiffness |
| ISO 75-2:2013 Method A | Heat deflection temperature | 1.8 MPa | 95–110 °C | Requires annealing |
| ISO 179-1:2010 | Charpy notched impact | 23 °C | 10–25 kJ/m² | Orientation-dependent |
| UL 94 | Flammability | 1.5–3.0 mm | HB typical | Not V-0 unless FR grade |
| IEC 60243-1 | Dielectric strength | 3.0 mm | 18–25 kV/mm | Layer voids lower values |
When Cutting Fluid Immersion Governs Fixture Material Selection
Machined aluminum fixtures are routinely replaced by printed PC-ABS when a machine shop must locate contoured castings in a four-axis machining centre. The selection of Mitsubishi PC-ABS filament in this application is governed by environmental stress-crack resistance rather than tensile modulus. In soluble oil emulsions at 5–8 vol% concentration and bath temperature below 40 °C, PC-ABS generally resists swelling for short contact durations, but neat mineral oils, aggressive synthetic esters, and acidic parts-washing detergents can attack the polycarbonate phase at sharp internal corners, bolt holes, and heat-set insert bosses. A fixture intended for intermittent cutting fluid exposure is tested by immersion in the actual production fluid for 168 h at 50 °C using the general procedure of ISO 2812-1; stress whitening at a corner or insert boss is treated as a rejection criterion. Printed fixture bodies are fabricated with 6 outer shells and 60% gyroid infill to provide a controlled balance between clamping stiffness and solvent uptake. Pilot holes for brass inserts are drilled 0.5 mm larger in diameter than the dry-environment recommendation, and inserts are installed only after the fixture has been conditioned at 23 °C for 24 h, because residual printing stress plus insert expansion stress can produce delayed radial cracking. The fixture is not used above 70 °C in a washing cabinet because the combination of hot alkaline detergent and mechanical clamping load promotes environmental stress cracking in PC-ABS; if a higher wash temperature is required, glass-filled nylon or metal should be substituted. Production records from CNC fixture applications show that geometry with wall sections below 4.0 mm and unsupported spans above 120 mm produce excess deflection under clamp load, so ribs are added at 20 mm spacing and the fixture is qualified with a dial indicator deflection target of <0.1 mm at the clamp face.
When a benchtop laboratory centrifuge module requires a low-volume housing that will not be autoclaved, Mitsubishi PC-ABS filament is selected over neat ABS for its higher heat-distortion resistance and over neat polycarbonate for its lower melt-processing sensitivity. The housing is printed at a layer height of 0.2 mm with a 0.6 mm extrusion width to reduce build time while maintaining a wall thickness of 3.0 mm. Because the module contains a 400 W motor and operates intermittently, local internal wall temperatures can reach 65 °C under continuous 2 h runs; the enclosure is annealed at 100 °C for 1 h to relax residual stress before assembly. Impact performance is evaluated by a 1.0 m free-fall test on the bottom corner following the general procedure of IEC 60068-2-32; no crack may propagate through a corner radius below 4.0 mm. The material is not recommended for autoclave sterilization at 121 °C, because repeated steam cycles hydrolyze the polycarbonate phase and lead to interlayer delamination. If the instrument requires frequent disinfection with hydrogen peroxide vapor, a separate chemical compatibility evaluation is necessary, as high-concentration hydrogen peroxide can attack the blend under load.
Low-Temperature Impact Retention in Portable Diagnostic Device Housing Prototypes
Portable diagnostic device housings molded from PC-ABS production grades are specified because the material retains a broader ductile-to-brittle transition profile than neat ABS. Fused deposition modeling with Mitsubishi PC-ABS filament reproduces that low-temperature impact retention only when interlayer bonding is sufficient, because Z-direction weakness can dominate the impact response independent of the polymer's inherent fracture toughness. A diagnostic housing intended for use in cold-chain logistics is printed with a 0.4 mm nozzle, 0.15 mm layer height, and 75 °C chamber temperature; after printing, it is annealed at 105 °C for 2 h and conditioned at −20 °C for 24 h before drop testing. Notched Charpy impact values for PC-ABS at −20 °C are commonly reported in the range of 5–15 kJ/m² under ISO 179-1:2010, while injection-molded PC-ABS can exceed 15 kJ/m² at the same temperature; the reduction in printed parts is attributable to stress concentrations at layer interfaces. The drop test is conducted at a 1.2 m free fall onto a 40 mm concrete slab per IEC 60068-2-32, and acceptance requires no visible crack or battery compartment separation. Bosses and snap arms are printed with 8 perimeters and a minimum fillet radius of 3.0 mm to reduce notch sensitivity. PC-ABS filament without a medical-grade polymer certification is not suitable for patient-contact applications requiring ISO 10993-1:2018 biological evaluation; published data for this specific configuration is limited.
Vacuum Forming Trim Fixtures Replace Medium-Density Fiberboard in Short-Run Development
Thermoforming shops that trim ABS and polycarbonate sheet have replaced medium-density fiberboard fixtures with printed PC-ABS when the production run is below 500 parts and the fixture must be generated within 24 h. Mitsubishi PC-ABS filament is used because the printed fixture must survive router bearing temperatures, light cutting forces, and occasional contact with hot sheet edge temperatures up to 80 °C. The fixture is designed with a 15 mm thick base plate, 12 mm thick locating walls, and 4 mm thick pressure pads; it is printed at 0.25 mm layer height with 45% triangular infill and a nozzle temperature of 280 °C. The base plate is machined flat after printing with a single-point fly cutter; a deviation of no more than 0.2 mm over a 300 mm × 300 mm area is specified before mounting to the trim table. Because PC-ABS has higher thermal expansion than aluminum, fixture locating features are offset by 0.15 mm per 100 mm of feature span when the shop floor temperature may vary from 18 °C to 30 °C. The fixture is not compatible with contact adhesives containing methylene chloride, which rapidly attacks the polycarbonate phase; water-based or acrylic adhesives are used instead. Repeated router pass testing on a 2.2 kW single-spindle trim cell shows no visible chipping of the fixture edge when the cutter entry speed is reduced below 300 mm/min; published data for this specific Mitsubishi PC-ABS configuration is limited, so each fixture must be qualified against the specific cutter geometry and sheet material.
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- Mitsubishi PC-ABS 3D Printing Filament Производится в соответствии с системой качества ISO 9001 и отвечает соответствующим нормативным требованиям.
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Mitsubishi PC-ABS 3D Printing Filament is an amorphous polymer alloy of bisphenol-A polycarbonate and acrylonitrile-butadiene-styrene distributed for fused filament fabrication. The product is supplied in nominal filament diameters of 1.75 mm and 2.85 mm, with spool weight, roundness tolerance, colour, and batch molecular weight data read from the lot certificate because published data for this exact Mitsubishi-branded filament configuration is limited. The material class represented by the trade name typically contains 60–75 wt% polycarbonate and 25–40 wt% ABS, with a heat-stabiliser package. The polycarbonate continuous phase contributes elevated heat deflection temperature and tensile modulus, while the ABS dispersed phase reduces melt viscosity and lowers the coefficient of linear thermal expansion relative to neat polycarbonate. The filament is opaque, electrically insulating in its unfilled form, and is applied where standard ABS lacks thermal or impact performance but neat polycarbonate cannot be processed reliably on a mid-range FFF machine.
Material lot controls for this product class are not strictly defined by the brand designation. PC-ABS can be compounded in polycarbonate-rich ratios of 65:35 or 70:30 PC:ABS; the exact ratio influences melt flow, appearance, and notched impact. Unless a Mitsubishi lot certificate provides the polycarbonate fraction, the user should regard nominal mid-range properties as representative only. Pigmented versions can shift impact strength by up to 15 % depending on pigment loading. Separate validation is required for each colour lot when notch-sensitive performance is critical.
Melt-Path Thermal Boundaries
Extrusion of PC-ABS demands an all-metal hot end. The polycarbonate fraction requires a sustained nozzle temperature of 260 °C–280 °C; a PTFE-lined hot end is unsuitable because the liner degrades above 250 °C and releases fluorinated decomposition products. Print failures on mid-range FFF machines include under-extrusion and delamination when the nozzle setpoint is below 250 °C. Build plate temperature is maintained at 80 °C–110 °C, and chamber air temperature is held at 45 °C–60 °C in enclosed machines to reduce differential shrinkage between the part and the build plate. A heated chamber is preferred but not always mandatory; without it, draft shields and a brim are required for parts with flat sections longer than 80 mm. Print speed for a 0.4 mm brass or hardened nozzle is typically 20–60 mm/s. Higher speeds increase melt pressure fluctuations and can produce short shots because the high-viscosity polycarbonate phase cannot be sheared quickly at the barrel residence time of a desktop hot end. Direct-drive retraction distance is 0.5–1.5 mm; Bowden retraction is 2–4 mm. Layer heights of 0.1–0.2 mm are used, with layer times above 10 s for small cross-sections to prevent heat accumulation and slumping.
Compounding of PC-ABS compounds is performed on co-rotating twin-screw extruders with L/D ratios of 36:1–44:1. Vacuum venting below 30 mbar absolute pressure removes volatile species and moisture before pelletizing. Melt residence time above 280 °C is limited to below 60 s in commercial practice because the butadiene component oxidises and the polycarbonate phase undergoes chain scission, producing yellow-brown discoloration. The filament extrusion line uses a melt pump and a two-stage cooling bath; diameter drift outside ±0.05 mm can cause local over-feed or under-feed in the print head and is rejected by the winder. If hot-end residence time exceeds 5 min, the melt darkens and generates acrid decomposition gases. Nozzle heaters with dead zones or long melt chambers should be avoided; a bimetallic heat break is preferred to prevent heat creep and filament buckling. Build-plate adhesion is improved by a PEI sheet at 80–100 °C; adhesion failure on starch slurry or glue-stick films is common. A brim of 10–15 mm on flat sections compensates for the alloy's higher thermal shrinkage. Hot removal above 70 °C can tear the PEI sheet surface; cooling below 70 °C before removal is therefore standard.
Why Is Moisture Control a Binding Constraint for Polycarbonate-Rich Alloys?
Water absorption of PC-ABS is dominated by the carbonate group. Saturated water uptake under ISO 62:2008 or ASTM D570-98 is commonly 0.3–0.4 %; the polycarbonate fraction absorbs more than the ABS fraction. At melt temperatures above 260 °C, residual moisture above 0.02 % hydrolyses the polycarbonate backbone, reducing molecular weight and increasing melt volume-flow rate. Under ISO 1133-1:2022 at 260 °C/5 kg, a conditioned PC-ABS filament may flow at 5–15 cm³/10 min, while a severely hydrolysed spool can exceed 25 cm³/10 min; the printed part becomes brittle and delaminates along build interfaces. Differential scanning calorimetry of wet filament can show a broad endotherm near 100 °C during first heating; this water evolves rapidly in the nozzle, creating steam pressure at the melt zone.
Pre-drying is mandatory after any unsealed exposure. A desiccant dryer set to 80 °C for 4–8 h with a dew point below -20 °C reduces moisture below 0.02 %. Laboratory vacuum drying at 70 °C for 6–10 h is an alternative. Drying above 90 °C should be avoided because spool deformation and filament stickiness occur. Storage is specified at 10–30 % RH in sealed bags with fresh desiccant. Spools left overnight at 60 % RH or higher require re-drying before printing. Printers with a sealed filament path or dry-box feed reduce moisture regain during long builds. Visible defects from moisture include nozzle splay, steam popping, silver streaking, and poor interlayer fusion; no increase in nozzle temperature corrects these defects because the damage is hydrolytic chain scission before the melt enters the nozzle.
Batch-to-batch variation in the Mitsubishi brand is likely controlled by the polymer supplier's molecular weight specification, but published comparative data between the Mitsubishi filament and generic PC-ABS is limited. The following property benchmarks are assembled from representative PC-ABS filament datasheets for FFF, not from a Mitsubishi lot certificate.
| Property | Test method | PC-ABS filament | ABS filament | Neat PC filament |
|---|---|---|---|---|
| Tensile yield stress | ISO 527-2:2012 / ASTM D638-14 | 45–58 MPa | 35–45 MPa | 58–70 MPa |
| Tensile modulus | ISO 527-2:2012 / ASTM D638-14 | 2000–2600 MPa | 1800–2200 MPa | 2200–2500 MPa |
| Flexural modulus | ISO 178:2019 / ASTM D790-17 | 2100–2700 MPa | 2000–2400 MPa | 2300–2600 MPa |
| Notched Izod impact at 23 °C | ASTM D256-10 / ISO 180/A:2019 | 350–650 J/m | 150–300 J/m | 600–900 J/m |
| Heat deflection temperature at 1.82 MPa | ASTM D648-16 / ISO 75-1/-2:2013 | 85–105 °C | 78–95 °C | 124–132 °C |
| Density | ISO 1183-1:2019 / ASTM D792-20 | 1.13–1.16 g/cm³ | 1.03–1.07 g/cm³ | 1.19–1.22 g/cm³ |
| Saturated water uptake | ISO 62:2008 | 0.3–0.4 % | 0.3–0.8 % | 0.3–0.4 % |
Compiled from published material datasheets; the PC-ABS values should not be used as Mitsubishi lot specifications. FFF specimens show anisotropy. Printed tensile bars loaded perpendicular to the build direction typically retain 60–80 % of XY ultimate tensile strength when layer fusion is optimised. At layer heights above 0.2 mm, the loss is greater because the contact area between raster passes decreases. Design calculations should use the lower bound of Z-direction tensile strength rather than the isotropic 45–58 MPa value.
The mechanical advantage of PC-ABS appears most clearly in notched impact. Standard ABS filament is frequently below 300 J/m under ASTM D256-10, while PC-ABS occupies the 350–650 J/m interval. Neat polycarbonate filament can exceed 600 J/m, but its processing temperature is 10–20 °C higher and its warp on large flat parts is severe unless the chamber is above 80 °C. The alloy therefore occupies a narrow but repeatable processing window: higher impact and heat resistance than ABS, lower warpage than neat PC.
When a Component Requires Impact Resistance Above ABS Without Neat PC Warp
Functional brackets, electronics housings, low-volume automotive interior trim, and assembly fixtures are typical usage cases. The material is specified when a component must survive repeated drop impact at 23 °C and brief exposure to 90–105 °C under low mechanical load. In these applications, neat PC filament often delaminates or lifts from the build plate on flat spans because its shrinkage is higher and the chamber temperature is insufficient; the ABS phase in PC-ABS reduces shrinkage and permits usable parts at chamber temperatures of 45–60 °C. Notch-sensitive features such as sharp internal corners, live hinges, and direct threaded bosses without inserts should be avoided because they localise stress at the polycarbonate/ABS interface. A wall thickness of 1.2 mm and a corner radius of 0.8 mm are practical lower limits for impact-loaded production parts.
For load-bearing parts, thread-forming screws create hoop stress and can initiate crazing around the boss. Brass heat-stake inserts are preferred if installed at low insertion speed; excessive temperature or feed rate cracks the polycarbonate phase. Solvent polishing with ketones or aromatic hydrocarbons is not recommended because PC-ABS stress-crack sensitivity is higher than ABS. Mechanical finishing, vapour polishing with dedicated PC-ABS smoothing machines, or two-part acrylic structural adhesives are safer post-processing routes. Published data for vapour polishing of Mitsubishi-branded PC-ABS is limited; validation on a sacrificial print is required before use on production parts.
Thermomechanical Selection Criteria Against Competing Filament Classes
PC-ABS differs from PETG, ABS, and neat PC in both processing and service temperature. PETG prints at 230–250 °C and is less moisture-sensitive, but its heat deflection temperature at 1.82 MPa under ASTM D648-16 is commonly 64–70 °C; PC-ABS extends that boundary to 85–105 °C. ABS prints at 230–250 °C and is easier to smooth with acetone, but its notched impact strength and HDT are lower. Neat PC requires a nozzle temperature above 280 °C and a chamber above 80 °C for large parts; PC-ABS prints at 260–280 °C and tolerates lower chamber temperatures. Against a glass-fibre-filled ABS, PC-ABS offers higher elongation at break and fewer abrasive wear concerns on brass nozzles, but glass-filled systems provide higher modulus.
Humidity performance compared with polyamide is particularly distinct. Saturated moisture uptake of PA6/PA66 filament under ISO 62:2008 is commonly 1–2 %, while PC-ABS remains below 0.4 %. Drying of PA requires more aggressive time-temperature conditions and immediate use; PC-ABS re-dries more quickly and can tolerate short bursts of ambient exposure. PC-ABS is not inherently UV-stable; outdoor service requires a UV-absorber grade or a protective coating. It is not a substitute for PEI or PEEK at continuous temperatures above 120 °C, and published data for continuous load-bearing use above 100 °C is limited. For chemical contact, PC-ABS is not recommended against ketones, esters, aromatic hydrocarbons, or glycol-based coolants above 50 °C.
Chemical exposure narrows the service window. PC-ABS is stress-crack sensitive to toluene, xylene, methyl ethyl ketone, and brake-fluid components; contact can initiate crazing before bulk yielding. Cleaning should be limited to aliphatic hydrocarbon wipes or isopropanol. Under IEC 60093, unfilled PC-ABS is electrically insulating, but static buildup is possible; static-dissipative properties require a specifically modified grade. The refractive index mismatch between the two phases makes PC-ABS opaque; optical clarity is not possible, and translucent service requires PC or PETG.
Regulatory compliance must be verified against the current supplier safety data sheet and lot certificate for the exact Mitsubishi PC-ABS stock-keeping unit. Unmodified PC-ABS is normally assessed under the EU REACH regulation EC No 1907/2006 for substances of very high concern below 0.1 % w/w and under the RoHS Directive 2011/65/EU Annex II restrictions for lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers. The polycarbonate phase may be covered generically by 21 CFR 177.1580 and the ABS phase by 21 CFR 177.1020, but pigments, stabilisers, and manufacturing aids require a separate food-contact letter; the filament is not food-safe by default. Decomposition products above 320 °C include styrene, acrylonitrile degradation products, and bisphenol-A-related compounds; local exhaust ventilation is required when purging or burning out a heated nozzle.
Creep and long-term temperature boundaries are defined by the continuous load case. A printed PC-ABS bracket in an enclosed electronics assembly can tolerate steady temperature up to 85 °C at low stress, but cyclic stress above 80 °C produces viscoelastic creep and eventual thread loosening. Pressurised fluid fittings above 50 °C are outside the material class when glycol or ester-based fluids are present. The processing and design limits described above are drawn from the generic PC-ABS filament class and should be checked against the Mitsubishi lot-specific technical datasheet before qualification testing.
