| HS Code | 125627 |
| Materialtype | Cast Urethane |
| Color | White |
| Density | 1.15 g/cm³ |
| Tensilestrength | 48 MPa |
| Tensilemodulus | 2400 MPa |
| Elongationatbreak | 6% |
| Flexuralstrength | 75 MPa |
| Flexuralmodulus | 2200 MPa |
| Hardness | 85 Shore D |
| Impactstrengthnotchedizod | 25 J/m |
| Heatdeflectiontemperatureat0 45mpa | 60 °C |
| Heatdeflectiontemperatureat1 82mpa | 50 °C |
| Coefficientofthermalexpansion | 70 µm/m/°C |
| Waterabsorption | 0.35% |
| Ashcontent | <0.1% |
| Viscosity | 250 cps at 30 °C |
| Criticalexposure | 11 mJ/cm² |
| Penetrationdepth | 0.13 mm |
As an accredited 3D Systems QuickPlastic Cast Urethane Material GlassFilled Nylon factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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Pre-drying the 3D Systems QuickPlastic Cast Urethane Material GlassFilled Nylon feedstock for 4 h at 80±5°C in a vacuum oven held below −0.095 MPa is required when ambient relative humidity exceeds 60 %RH; absorbed moisture reacts with residual isocyanate during cure and creates interior microvoids that reduce tensile elongation at break by more than 25 % when tested per ASTM D638-14. In underhood prototype programmes, the material is specified for the same design envelope as 30 wt% short-glass reinforced PA66 but without the lead time and cost of steel injection tooling. The formulation addition ratio of glass-filled nylon particulate to the mixed urethane compound is kept between 25 wt% and 30 wt%; lower loadings soften the part, and loadings above 35 wt% raise mixed viscosity above 85,000 cP at 25°C, causing short shots in 1.5 mm ribs during vacuum casting. The production route uses room-temperature vulcanizing silicone moulds cut from a printed master, vacuum-drawn at 0.08–0.09 MPa for 10–15 min until bubble release ceases, then cured for 24 h at 25°C and post-cured at 120°C for 4 h. Dimensional acceptance follows ISO 16750-3:2012 vibration profiles and ASTM D648-18 heat deflection temperature data, with underhood parts limited to continuous service below 150°C. Terminal parts include air intake manifold prototypes, sensor brackets, cable clips, and coolant overflow tank adapters. Batch-to-batch viscosity drift above 12 % at 25°C is the most common failure mode on production floors and is controlled with inline cone-and-plate viscometry at 50 s⁻¹ before degassing.
Electrical enclosure fabricators using the glass-filled cast urethane route commonly specify UL 94 V-0 at 1.5 mm thickness and IEC 60695-2-11:2014 glow-wire end-product testing at 850°C for unattended appliances; the compound is also evaluated for comparative tracking index under IEC 60112:2020 when high-voltage creepage distances are reduced. The formulation addition rate is 20–25 wt% glass-filled nylon particulate based on total mixed compound, and filler dispersion is verified by ashing at 750°C for 1 h per ISO 3451-1:2019. The mixed material is vacuum-cast at 0.1 MPa differential pressure into room-temperature silicone moulds, then cured at 80°C for 2 h and 100°C for 3 h. Before connector press-fit, the housing is conditioned at 23°C and 50 %RH for 40–48 h per ISO 291:2008, because moisture uptake of 0.8–1.2 % shifts critical bore dimensions by 0.2–0.4 % and changes insertion force by more than 20 %. Terminal parts include connector shells, circuit breaker covers, sensor junction boxes, and DIN-rail enclosures. Production experience shows that press-fit retention is insensitive to filler content only when conditioned moisture content is below 0.3 %; therefore, a final dry-blast or tempered-air station at 40°C is placed immediately before assembly.
Unlike injection-moulded glass-filled nylon, the QuickPlastic glass-filled nylon cast urethane route for jigs and fixtures is machined after casting rather than moulded to net shape, because locating surfaces require flatness better than 0.1 mm/m and hole position tolerances below 0.05 mm. The addition ratio is held at 15–20 wt% filler to keep compressive strength high without degrading machined edge quality; acceptance testing follows ISO 604:2002 for compressive modulus and ASTM D695-15 for compressive strength, with typical values of 110–130 MPa compressive strength and 4.5–5.5 GPa compressive modulus for this filler range. Cast blocks are prepared by vacuum degassing at −0.095 MPa for 15 min and curing at 65°C for 3 h, followed by 100°C for 6 h to eliminate residual tack before machining. On a twin-spindle CNC with 18,000 rpm maximum spindle speed, diamond-coated end mills are required because the glass filler erodes uncoated carbide at a rate that reduces tool life by 50 % after 20 parts. Terminal products include robotic gripper fingers, CMM holding fixtures, pallet location nests, and drilling jigs. Compliance for the automation environment is documented under ISO 12100:2010 risk assessment only at the fixture design level; the material itself is evaluated for dimensional stability under ISO 291:2008 standard atmosphere before release to the line.
For pump and valve components, the glass-filled cast urethane is selected only after hydrolytic stability screening in a 80°C water/glycol 50:50 bath for 500 h; acceptance is set at retention of at least 70 % of flexural strength per ISO 178:2019 and no visible surface cracking under 10× magnification. The filler addition ratio is 15–25 wt% glass-filled nylon particulate, which reduces linear mould shrinkage to 0.4–0.6 %; above 30 wt%, the mixed compound becomes too viscous to fill the 0.8 mm blade edge on closed impeller sections. Processing uses a two-part silicone mould under 0.08 MPa vacuum after a 15 min degas at −0.095 MPa; demoulding occurs at 30°C after 24 h, followed by a cycle of 60°C for 4 h and 120°C for 4 h. Chemical resistance is evaluated per ISO 175:2010 in 25°C ethylene glycol and paraffinic oil; published data for the QuickPlastic glass-filled grade in concentrated acids are limited, and service is restricted to pH range 4–10. Terminal parts include pump volute prototypes, impellers, valve bodies, filter heads, and chemical metering pump housings. Field data from low-volume pump programmes show that uncontrolled exotherm during thick-section pours above 65°C causes internal voids that initiate fatigue cracks at impeller hub radii after 1,200 operating hours.
| Downstream segment | Primary compliance references | Filler addition ratio | Critical process boundary | Terminal part classes |
|---|---|---|---|---|
| Automotive underhood | ASTM D648-18; ISO 16750-3:2012 | 25–30 wt% | Mixed viscosity above 85,000 cP at 35 wt% | Intake manifold prototypes, sensor brackets |
| Electrical enclosures | UL 94 V-0; IEC 60695-2-11:2014 | 20–25 wt% | Moisture uptake 0.8–1.2 % before press-fit | Connector shells, breaker covers |
| Industrial tooling | ISO 604:2002; ASTM D695-15 | 15–20 wt% | Machining requires diamond-coated end mills | Gripper fingers, CMM fixtures |
| Fluid handling | ISO 178:2019; ISO 175:2010 | 15–25 wt% | Exotherm above 65°C causes internal voids | Pump volutes, valve bodies |
| EV battery components | IEC 62660-2:2018; UN 38.3 | 30 wt% | Viscosity above 100,000 cP above 35 wt% | Cell holders, busbar supports |
Electric vehicle battery engineering teams replace machined aluminium pilot tools with the 3D Systems QuickPlastic glass-filled nylon cast urethane route when bridge production quantities fall below 2,000 units, because a single silicone cavity produces 20–25 acceptable parts before edge tearing, and aluminium tooling would not amortize. The compound addition is set at 30 wt% glass-filled nylon particulate on total mixed weight; filler fractions above 35 wt% are not processed because viscosity exceeds 100,000 cP at 25°C and the material no longer fills 1.2 mm snap-fit features. Casting takes place at 0.09 MPa vacuum differential into steel-reinforced silicone moulds, with post-cure at 130°C for 2 h to stabilize tensile fatigue scatter in cell-holder lugs. Compliance references include UN 38.3 for transport of cells if carriers contain cells, IEC 62660-2:2018 for mechanical shock, UL 94 V-0 at 1.5 mm, and ASTM D648-18 heat deflection temperature above 180°C at 0.45 MPa for the glass-filled nylon phase. Terminal parts include prismatic cell holders, busbar support brackets, battery management system mounting rails, and cooling plate spacers. A known process boundary is that flame-retardant additives required for some cell carriers can separate at high filler loadings unless a low-shear sweep is maintained below 15 rpm during initial blending; formulations for this service should be validated by ASTM D7309-21 pyrolysis residue testing to confirm consistent flame-retardant distribution.
When non-imaging medical enclosures are converted from CNC-machined polycarbonate to the QuickPlastic glass-filled nylon cast urethane route, cytotoxicity screening per ISO 10993-5:2009 and sensitization risk assessment per ISO 10993-10:2021 are completed before first article release; if the housing is marketed in the United States as a device enclosure, FDA 21 CFR 177.1680 or applicable polymer migration data must be on file. The addition ratio for diagnostic housing compounds is 18–22 wt% filler based on total mixed mass, which reduces sink marks at bosses while retaining impact toughness for repeated cart movement. The process uses single-cavity silicone moulds because the demand volume per housing geometry is usually below 500 units; the material is degassed at −0.095 MPa for 15 min, poured at 25°C, and cured at 65°C for 3 h, with demoulding at 40°C to reduce surface marking on textured areas. Terminal products include MRI table accessory housings, ultrasound cart panels, laboratory analyzer top covers, and point-of-care device enclosures. This material is not specified for direct skin-contact or blood-contact components unless a complete biocompatibility evaluation is completed on the final device per ISO 10993-1:2018; published data for this specific QuickPlastic grade in skin-contact applications are limited. Manufacturing engineers report that static discharge during demoulding of diagnostic covers is controlled by keeping ambient relative humidity between 40 %RH and 60 %RH and by using ionizers at the mould-open station.
Consumer power tool housings and appliance structural frames are converted to the glass-filled cast urethane route when annual production remains below 5,000 units and glass-filled injection moulding tooling is not justified. The formulation addition ratio is 22–27 wt% glass-filled nylon particulate; this range maintains tensile strength above 70 MPa per ASTM D638-14 and retains enough ductility for repeated drop impact. The material is vacuum-cast at 25°C into silicone moulds and post-cured at 90°C for 4 h; threaded inserts are then installed with ultrasonic insertion at 20 kHz rather than moulded in to avoid flash and insert displacement. Compliance for final appliances follows EN 60335-1:2012 + A2:2019 for household safety, UL 60730-1 where electronic controls are present, and ISO 11469:2016 for polymer identification marking. Terminal products include drill motor housings, vacuum cleaner base plates, portable power tool battery covers, and appliance control panel frames. Field feedback from ultrasonic insertion stations indicates that a hole-to-boss diameter ratio below 0.85:1 is required to prevent radial cracking in this filler range; pre-heating the inserted boss to 35°C further reduces local stress concentration.
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In low-volume functional prototyping, the product designated 3D Systems QuickPlast Cast Urethane Material GlassFilled Nylon is specified as a two-component cast urethane formulated to reproduce the mechanical response of glass-filled nylon without cutting steel injection mold geometry. The material is not a thermoplastic polyamide; it is a glass-fiber-filled polyurethane system processed by vacuum casting into room-temperature-vulcanizing silicone tools. Because the matrix is a thermoset urethane, the cured part has a different coefficient of thermal expansion, moisture absorption behavior, and long-term creep response than a glass-filled nylon 6/6 injection-molding resin. The QuickPlast designation is the product identifier rather than a chemical composition statement; the exact glass fiber loading, polyol chemistry, and hardener stoichiometry are controlled by the manufacturer’s technical data sheet. Representative values reported for this class of glass-filled nylon cast urethanes include a density of 1.20–1.32 g/cm³ per ASTM D792, Shore D hardness of 80–85 per ASTM D2240, and flexural modulus in the range 5500–8000 MPa when tested according to ISO 178.
The primary difference is the pre-dispersed glass fiber content in the urethane matrix. Unfilled cast urethanes typically show tensile strengths of 25–45 MPa and flexural moduli of 800–1500 MPa, while glass-filled nylon simulation grades shift the tensile strength toward 60–75 MPa and the flexural modulus toward 6000 MPa or higher. The increase in rigidity is accompanied by a sharp reduction in elongation at break: neat cast urethanes commonly exceed 30% elongation, whereas glass-filled nylon cast urethanes fall below 5%, measured under ISO 527-2. This trade-off changes the failure mode from ductile yielding to brittle fracture, so mounting bosses, snap fits, and thread-forming features require larger radii and lower insertion forces than unfilled prototypes. Shrinkage also differs; fiber reinforcement reduces linear shrinkage during cure to approximately 0.3–0.6%, compared with 0.8–1.2% for unfilled cast urethane systems, which reduces sink marks opposite thick ribs.
On production-scale vacuum casting machines fitted with 2–5 kg cup capacities and 5–10 mbar absolute vacuum, the polyol component containing suspended glass fiber is preheated to 30–35°C and mixed with the isocyanate hardener at a stoichiometric ratio controlled by the manufacturer. The mixture is degassed for 8–15 min before transfer into a silicone tool. Pot life at 25°C is typically reported as 20–40 min until viscosity doubling, but the exotherm from thick sections accelerates crosslinking and shortens the usable window. A 6 mm wall section may generate an exotherm peak of 80–100°C in the tool center; therefore mold temperature is held at 60–70°C to balance cure completion against thermal overshoot. Demold time is usually 2–4 h, followed by a post-cure of 8–12 h at 70–80°C to stabilize glass-transition temperature and final modulus.
Silicone tool life for glass-filled urethane is shorter than for neat systems because the glass fibers abrade mold surfaces during multiple pours. Tools are conditioned with a release agent rated for isocyanate service. Equipment used in field service generally requires a vacuum pump capable of sustaining ≤5 mbar absolute and a mixing head with hardened metering components to resist glass-particle wear. Viscosity of the filled polyol component measured by ASTM D2196 at 25°C is typically in the range 2500–6000 mPa·s, while mixed-viscosity rise under vacuum follows a nonlinear cure curve. Because glass fiber settles during prolonged storage, the polyol drum must be agitated or rolled before each campaign. Failure to disperse the fiber consistently produces resin-rich surfaces and strength gradients in the cured part. Batch-to-batch variation in tensile strength has been observed on production lines when the fiber loading is not controlled within ±1 wt%; such variation shifts modulus and can alter the fit of press-fit assemblies.
After demold, dimensional inspection follows ISO 2768-2 general tolerances, but glass-filled cast urethane does not provide the same long-term thermal stability as glass-filled nylon 6/6. Heat deflection temperature measured by ISO 75-2 method A at 1.82 MPa is commonly reported between 90°C and 120°C, while a 33% glass-filled nylon 6/6 injection molding typically exceeds 240°C. Continuous-use temperature for the cast urethane should therefore be limited to 70–90°C in stressed applications. Coefficient of linear thermal expansion is approximately 70–100 × 10⁻⁶ K⁻¹, higher than glass-filled nylon and closer to that of thermoset urethane networks, which influences bearing fits and insert retention at elevated ambient conditions.
Moisture ingress in the isocyanate component produces carbon dioxide during cure, yielding microvoids and a reduction in notched Izod impact strength under ASTM D256. If the resin and hardener are conditioned outside 20–30°C, viscosity deviations alter the filling of thin ribs; below 20°C, the filled polyol becomes shear-thinning but may retain enough viscosity to starve 1 mm walls, while above 30°C the pot life contracts to under 15 min. Silicone tools should be pre-dried at 40°C for 4 h when relative humidity exceeds 60% to prevent surface porosity. The material is not compatible with amine-based release agents or tin-free silicone condensation catalysts that can attack the urethane cure. Use of solvent-based cleaners on green parts before post-cure may cause surface softening and should be avoided.
The following property envelope compares the glass-filled nylon cast urethane class with unfilled cast urethane and glass-filled nylon 6/6 injection-molding resin. Values are representative ranges from publicly available data sheets for materials of the same class; the QuickPlast technical data sheet remains the controlling document for lot-certified values.
| Property | Test method | Glass-filled nylon cast urethane | Unfilled cast urethane | 33% glass-filled nylon 6/6 |
| Tensile strength | ISO 527-2 | 60–75 MPa | 25–45 MPa | 140–180 MPa |
| Flexural modulus | ISO 178 | 5500–8000 MPa | 800–1500 MPa | 7000–9500 MPa |
| Elongation at break | ISO 527-2 | 2–5% | 30–100% | 2–4% |
| Notched Izod | ASTM D256 | 50–90 J/m | 30–80 J/m | 90–120 J/m |
| HDT at 1.82 MPa | ISO 75-2/A | 90–120°C | 40–60°C | 240–255°C |
| Linear shrinkage | Internal mold study | 0.3–0.6% | 0.8–1.2% | 0.4–0.8% |
| Moisture absorption, 24 h | ASTM D570 | 0.2–0.5% | 0.3–0.8% | 0.6–1.2% |
The following verification matrix lists the test methods used for incoming resin and cured plaque acceptance. These checks are performed before release of a vacuum casting campaign, not after end-use part qualification.
| Verification item | Method or standard | Typical acceptance criterion |
| Viscosity of glass-filled polyol at 25°C | ASTM D2196 | 2500–6000 mPa·s |
| Gel time at 25°C | ASTM D2471-19 | 20–40 min |
| Tensile strength on cured plaque | ISO 527-2 | ≥60 MPa |
| Flexural modulus | ISO 178 | ≥5500 MPa |
| HDT at 1.82 MPa | ISO 75-2/A | ≥90°C |
| Hardness | ASTM D2240 | 80–85 Shore D |
| Density | ASTM D792 | 1.20–1.32 g/cm³ |
For functional gear prototypes, the material is poured into silicone tools with steel core pins to hold internal bores. The glass-filled urethane’s compressive strength, typically 80–100 MPa under ASTM D695, allows short-run testing of tooth bending loads but not full torque-to-failure validation for production glass-filled nylon gears. In one production-scale layout, a 2 kg vacuum casting machine with a 60 L chamber produced 8–12 gear housings per day from a single cavity silicone tool; the limiting step was not fill rate but post-cure oven capacity. For snap-fit lids, the low elongation at break requires gate location and flow front planning so that knit lines do not form at the flexural hinge. Because the filled resin flows with higher apparent viscosity than unfilled grades, wall thickness below 1.2 mm can exhibit short shots unless timed pressure casting is used.
At sustained service temperatures above 120°C, the QuickPlast glass-filled nylon cast urethane is not a substitute for glass-filled nylon 6/6 or PPA injection-molding resins. Thermoset urethane networks undergo progressive loss of modulus above their glass-transition region, and the material can show creep under load at temperatures where glass-filled nylon retains a crystalline phase. Short-term excursions to 120–140°C may be tolerated for paint bake cycles only if fixtures support the part, but continuous load-bearing use at those temperatures is outside the demonstrated envelope. Published data for this specific configuration under ISO 899 creep loading is limited; therefore long-term creep testing is required before replacing a glass-filled nylon production part in a safety-critical or load-bearing assembly.
The material should not be specified for chemical immersion in strong acids, ketones, or hot glycols, because the urethane matrix is susceptible to hydrolysis and solvent attack under those conditions. For under-hood chassis parts or industrial fluid-handling components, the cured plaques should be tested under the intended fluid temperature and exposure cycle using ASTM D543 before any production release decision. When the surface is machined after casting, glass fibers exposed at the cut plane can create abrasive wear on mating seals; seal contact surfaces therefore require post-machining resin coating or design relocation of the parting line away from dynamic sealing zones.
