| HS Code | 585897 |
| Density | 1.34 g/cm³ |
| Glass Filler Content | 30% |
| Water Absorption 24 Hr | 0.30% |
| Linear Mold Shrinkage | 0.0035 cm/cm |
| Tensile Strength Ultimate | 120 MPa |
| Elongation At Break | 1.8% |
| Flexural Modulus | 7.00 GPa |
| Flexural Strength | 160 MPa |
| Izod Impact Notched | 50 J/m |
| Heat Deflection Temperature 1 82 Mpa | 121 °C |
| Heat Deflection Temperature 0 45 Mpa | 160 °C |
| Glass Transition Temperature | 125 °C |
| Coefficient Of Linear Thermal Expansion | 3.0e-5 /°C |
As an accredited Encom Polymers EnLon PX7006 Amorphous Nylon, 30% Glass Filled factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 25 kg net, moisture-resistant polyethylene-lined kraft bags, sealed to prevent contamination and moisture absorption. |
| Container Loading (20′ FCL) | 20′ FCL: one full container of Encom Polymers EnLon PX7006 Amorphous Nylon, 30% Glass Filled, palletized and secured for safe transport. |
| Shipping | EnLon PX7006 Amorphous Nylon, 30% Glass Filled ships as a non-hazardous thermoplastic resin in sealed, moisture-proof packaging to prevent water absorption. Standard ground or LTL freight is suitable; avoid exposure to excessive heat or humidity. No special hazmat labeling required, but keep containers dry and undamaged during transit. |
| Storage | Store EnLon PX7006 in original, tightly sealed containers in a cool, dry area away from direct sunlight and heat sources. Keep the resin protected from moisture, as amorphous nylon is hygroscopic and absorbs water. Maintain good ventilation and avoid contact with strong oxidizers. Use within recommended shelf life to preserve performance. |
| Shelf Life | Shelf life is indefinite when stored sealed in original packaging, protected from moisture, heat, and direct sunlight. |
For under-hood connector carriers that locate camshaft or electronic throttle sensor sockets, Encom Polymers EnLon PX7006, a 30% glass-filled amorphous nylon, is selected because the amorphous backbone reduces the large differential between crystalline and amorphous phase shrinkage that distorts PA66 multibay housings after thermal cycling. The dry-as-molded tensile modulus of this material class is typically reported between 7,800 MPa and 9,600 MPa according to ISO 527-2:2021. Mold temperature is the primary process variable that controls anisotropies in the filled amorphous matrix. A mold temperature below 75°C has been observed in production trials to increase frozen-in strain at the pin tower bases. Socket collapse occurs after moisture conditioning to 50% RH. A mold temperature between 80°C and 110°C permits enough chain mobility to relax stresses without increasing cycle time beyond 35 s for a 1.8 mm nominal wall. Pellet moisture must be below 0.10% by weight at the hopper. A desiccant dryer delivering a dew point no higher than -40°C at 80°C for 4 h is used. If the dew point rises to -20°C, surface splay appears on the first fill. Extended residence time then produces a viscosity drop that cannot be recovered by raising barrel temperature. The barrel profile from rear to nozzle is commonly set at 260°C, 270°C, 280°C, and 285°C on a 20:1 L/D general-purpose screw with a shallow compression zone. Back pressure is held between 0.3 MPa and 0.7 MPa to minimize glass-fiber attrition. Screw surface speed is limited to below 0.4 m/s for the same reason. Gate locations are moved from an end tab to a center fan gate when the connector body length exceeds 120 mm. If the gate remains at one end, the measured flatness deviation across the sealing surface after exposure to 150°C for 1,000 h increases from 0.2 mm to 0.45 mm. Injection pressure is held between 80 MPa and 120 MPa on a machine with a 35 mm screw. Clamp force is set at 3.5 kN/cm² of projected area to prevent flash along the seal groove. Terminal retention force is evaluated with a pull-out test at 5 mm/min after thermal shock from -40°C to 125°C for 500 cycles. The glass fiber network provides high initial retention because hole diameter shrinkage is isotropic enough to maintain contact normal force. Published data for this specific connector configuration is limited, but the critical process boundary is the interaction of fiber orientation and moisture-induced dimensional recovery. This application is sensitive to regrind addition above 20% because fiber-length reduction lowers the weld-line load at the pin tower by 15–25%.
| Property | Test method | Dry-as-molded | Conditioned at 50% RH |
|---|---|---|---|
| Tensile strength | ISO 527-2:2021 | 140–170 MPa | 115–145 MPa |
| Flexural modulus | ISO 178:2019 | 7,800–9,600 MPa | 5,400–6,900 MPa |
| Notched Izod impact | ISO 180/A | 8–12 kJ/m² | 11–15 kJ/m² |
| Tensile elongation at break | ISO 527-2:2021 | 2.0–3.5% | 2.5–4.0% |
These ranges are extracted from industrial datasheets for comparable 30% glass-filled amorphous polyamide grades and serve as engineering orientation, not as guaranteed limits for the EnLon PX7006 lot.
In a four-cavity hot-runner tool that fills a manifold absolute pressure sensor housing through a single probe per cavity, the last material converges at the barrel wall behind the mounting boss and forms a weld line. In 30% glass-filled amorphous nylon, the weld-line zone is depleted of fibers bridging the interface. The fibers align parallel to the knit plane. Bulk tensile strength under ASTM D638-14 for a dry-as-molded specimen is not the governing design number. Weld-line tensile strength is typically 40–60% of the bulk value. If the mold temperature is raised from 80°C to 110°C, weld-line retention improves by 10–15%, but cycle time increases and pack pressure becomes more critical. An increase of 20% in injection speed has a smaller effect than mold temperature. It shifts the weld-line location toward the end of fill and changes the failure mode from delamination to direct fiber pull-out. The part designer can place an overflow tab downstream of the weld line. In production trials on comparable glass-filled amorphous nylon grades, an overflow tab 6 mm wide by 40 mm long was sufficient to purge the cold front and raise weld-line retention from 45% to 65%. The tab must be removed by a separate degating step because a score line less than 0.8 mm deep fails to provide a clean break. Barrel temperature is limited to 285°C at the nozzle. Above 290°C, the amorphous melt can begin to discolor in areas of low flow. This discoloration is a residence-time indicator, not field contamination. The hold time is extended to 1.5 s/mm of wall thickness when the last-filled feature is a pin boss with a diameter below 3 mm. Failure to hold pressure long enough creates an internal void adjacent to the weld line that appears only after thermal cycling to 120°C for 1,000 h. Weld-line strength is not improved by glass fiber content alone. The controlling variable is the fraction of fibers oriented transverse to the flow.
Because circuit breaker insulating plates must resist arc tracking after exposure to high relative humidity at 85°C and 85% RH, the comparative tracking index is tested according to IEC 60112:2020. A 30% glass-filled amorphous nylon grade is used when the design requires dimensional stability under terminal screw torque and an electrical breakdown strength above 20 kV/mm under IEC 60243-1:2013. The glass fiber content raises the surface roughness of the molded insulator. This roughness reduces the tracking path but does not alone determine the CTI class. The base resin and any heat stabilizer package have a stronger influence on carbon-path formation. Molded plates are pre-dried to below 0.10% moisture because volatiles from damp pellets deposit on the cavity surface and create a skin defect that reduces dielectric surface quality. Processing at melt temperatures above 295°C can produce a resin-rich skin layer that changes surface resistivity from 1014 Ω to 1012 Ω. This shift does not automatically fail the part, but it changes the leakage-current path in the presence of dust and condensed moisture. Conformal coating adhesion after plasma treatment is checked with a cross-hatch test per ISO 2409:2020. Glass-filled amorphous nylon that has been stored at 60% RH for 72 h may show adhesion loss at the coating interface if the surface is not dry before coating. The acceptance criterion is a classification no lower than 1 under ISO 2409:2020.
| Requirement | Test method | Acceptance criterion |
|---|---|---|
| Comparative tracking index | IEC 60112:2020 | ≥ 250 V |
| Dielectric strength | IEC 60243-1:2013 | ≥ 20 kV/mm in oil |
| Surface resistivity | IEC 62631-3-2:2016 | ≥ 1012 Ω/sq |
| Flame resistance | UL 94 | HB or V-0 as required by end-use standard |
| Adhesion cross-hatch | ISO 2409:2020 | ≤ 1 |
This matrix reflects commonly specified electrical end-use criteria for glass-filled amorphous polyamide in circuit protection equipment. The grade must be evaluated at the final wall thickness because glass fiber distribution and skin resin thickness change with gating and mold temperature.
Robot end-effector brackets are clamped to aluminum profiles and see sustained bending loads when the robot accelerates along the sixth axis. A 30% glass-filled amorphous nylon bracket is evaluated for creep modulus under ISO 899-2:2021 because the end-user specification restricts the total deflection at the tool center point to less than 0.1 mm after 1,000 h at 60°C. The creep modulus of this material class is typically 55–70% of the short-term flexural modulus when measured at 60°C and 20 MPa stress. The short-term flexural modulus under ISO 178:2019 is 7,800–9,600 MPa for dry-as-molded specimens. If the bracket is conditioned to equilibrium at 50% RH, the flexural modulus drops to 5,400–6,900 MPa. This reduction must be included in finite-element analysis. The molded part is annealed after machining because the removal of glass fiber at drilled holes creates residual stress concentrations. These concentrations reduce the load-to-failure by 20–30% if not annealed. Annealing is performed for 2 h at 100°C with a slow cool rate of 0.5°C/min. A faster cool rate reintroduces surface tensile stress. Fastening torque is limited because the glass-filled material is notch-sensitive. A M6 screw with a 12 mm boss diameter is torqued to 4 N·m maximum. Above 6 N·m, the boss root cracks under thermal cycling. The bracket holes are designed with a minimum edge distance of 1.5 times the hole diameter to avoid breakout. Production experience on similar amorphous nylon grades shows that the critical failure mode is not monotonic creep but fatigue crack growth from sharp corners after 105 load cycles. The glass fiber orientation at the corner must be managed by tool gates positioned away from the high-stress fillet.
Adjacent to gear metering cavities, a 30% glass-filled amorphous nylon pump plate is exposed to 0.5% aqueous glycol at 45°C for 2,000 h during qualification. The part is used for dimensional stability, not for survival in hot water above 80°C. At water temperatures above 80°C, hydrolysis of the polyamide backbone proceeds quickly enough to reduce tensile strength by 30–50% within 1,000 h. The plate must be predried to below 0.10% moisture and molded with a mold temperature between 90°C and 120°C to minimize internal voids at the bearing carrier junctions. The maximum continuous service temperature in hot oil is 120°C for this material class. Any excursion above 135°C should be limited to short-term exposure only. The pump plate design avoids sharp corners and thread-cutting screws because the glass-filled material has limited elongation and can split at the boss. This scenario is established practice; only moisture control and tool temperature require daily attention.
A non-halogenated flame-retardant masterbatch is diluted into a 30% glass-filled amorphous nylon at 8% let-down ratio on a 27 mm twin-screw compounding extruder. The melt residence time becomes the controlling process variable. At 280°C, a residence time below 6 minutes generally preserves the molecular weight of the amorphous nylon. From 6 to 12 minutes, melt viscosity at 1,000 s⁻¹ can drop by 10–20% due to chain scission. Beyond 12 minutes, plate-out of phosphorus-containing degradation products on the die lip is observed. The strand shows intermittent bubbles even when the feed moisture is below 0.10%. Screw torque decreases. This torque drop is not a safe operating improvement. It indicates a lower molecular weight, which reduces weld-line strength and increases the risk of brittle fracture in thin-wall connectors. The compounding line is operated with a feed throat temperature below 60°C to prevent bridging of the glass-filled pellets. The die plate is specified with 3 mm holes and a land length of 10 mm. A shorter land length increases die swell. A longer land creates high back pressure that overheats the FR masterbatch. The compounded pellets are dried to below 0.10% moisture before injection molding. The dryer temperature must not exceed 80°C because FR additives can bloom to the pellet surface at 90°C. Injection molding hold pressure is increased by 15% relative to the unfilled amorphous nylon grade to compensate for the reduced flow length at the same glass content. This processing boundary is the most common source of lot-to-lot variation in flame-retardant electrical housings.
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Encom Polymers EnLon PX7006 is a 30% glass-fiber-reinforced injection-molding compound based on an amorphous nylon matrix. The product is specified where low differential mold shrinkage, flatness retention, and moderate heat resistance dominate part acceptance. Because the nylon is amorphous, no crystallization exotherm is observed during cooling; the matrix instead passes through a glass transition, producing a broad softening response. The glass fiber content raises tensile strength and flexural modulus while suppressing elongation at break. Published data for this specific configuration is limited for some application-specific fatigue and creep spectra; therefore, component qualification should rely on lot-specific data and part-level testing under ASTM D638-14 and ISO 527-2 specimen protocols.
The grade is supplied as cylindrical pellets with glass-fiber reinforcement distributed in the matrix. Fiber length distribution is determined by the compounding line; co-rotating twin-screw extruders with 40:1 L/D and downstream glass side-feeding are commonly reported to retain fiber length in the 200 µm to 400 µm range. Subsequent injection molding reduces fiber length through screw recovery and gate shear; final fiber lengths from 150 µm to 300 µm are typical in molded parts, depending on screw compression ratio, back pressure, and gate dimensions.
In 30% glass-filled PA66, the crystalline phase produces a distinct melting endotherm near 260 °C and a heat deflection temperature at 1.82 MPa often above 240 °C. In amorphous glass-filled nylon, no melting endotherm appears. The glass transition of amorphous nylon grades often falls between 120 °C and 150 °C; glass reinforcement raises the heat deflection temperature into a similar band under ASTM D648, but it does not create the high-temperature load-bearing plateau of semi-crystalline PA66. The practical consequence is that EnLon PX7006 is not a direct replacement for 30% glass-filled PA66 in underhood components that see continuous metal-contact temperatures above 180 °C.
Mold shrinkage for 30% glass-filled amorphous nylon is usually reported between 0.001 mm/mm and 0.004 mm/mm, with flow and transverse values close enough to reduce corner lifting in flat rectangular covers. Semi-crystalline 30% glass-filled PA66 often shows 0.003 mm/mm to 0.006 mm/mm and a larger flow-to-crossflow spread. The lower and more isotropic shrinkage of the amorphous grade supports tighter bushing press fits and flatter seal grooves. Flexural modulus values overlap in the 8,000 MPa to 9,500 MPa range, so stiffness-limited designs can often be transferred without a major wall-thickness increase.
Applications for EnLon PX7006 are selected when part flatness, dimensional repeatability, and surface detail outweigh continuous high-temperature exposure. Examples include sensor housings, electrical enclosures, optical-mechanical brackets, and fluid reservoirs where intermittent temperatures stay below 120 °C. In these parts, the 30% glass content provides sufficient stiffness to replace die-cast aluminum or zinc at lower mass, but load-bearing fatigue data for this specific configuration is limited and must be generated for structural applications. For parts exposed to 90% RH or direct water contact above 80 °C, semi-crystalline nylon or PBT may be more resistant to stress-cracking.
Compared with 30% glass-filled PBT, the amorphous nylon grade can offer lower mold shrinkage and better low-temperature ductility, but PBT generally absorbs less moisture and crystallizes more rapidly, allowing shorter cycle times in high-volume molding. Compared with 30% glass-filled PA66, the amorphous product reduces differential shrinkage and can improve flatness but sacrifices high-temperature creep resistance and some chemical resistance. Compared with unfilled amorphous nylon, the 30% glass reinforcement substantially increases tensile strength and flexural modulus while reducing elongation at break and removing optical transparency.
Amorphous nylon absorbs atmospheric moisture. If pellets are not dried, moisture at the fiber-matrix interface can hydrolyze the polymer at melt temperatures above 250 °C, producing gas streaks, splay, and loss of impact strength. Desiccant drying at 80 °C for 4 h with a return-air dew point at or below -30 °C is a standard start-point. Target pellet moisture before molding is 0.10% by weight by Karl Fischer titration. A hopper dryer alone is not sufficient in production areas where ambient relative humidity exceeds 60%.
A vacuum dryer operating below 100 mbar absolute pressure at 80 °C can reduce moisture below 0.05% in 6 h, but the desiccant cycle is usually shorter and less thermally damaging. Dried pellets should not be exposed to ambient air for more than 30 min in humid plants without dry-air conveying. If surface condensation forms on pellets, the drying cycle must be restarted because bound moisture will not be removed by the machine throat.
Typical start-point melt temperature is 270 °C to 290 °C, with rear zones from 240 °C to 260 °C and nozzle from 270 °C to 290 °C. Mold temperature is maintained between 80 °C and 120 °C. The lower setting reduces cycle time; the upper setting improves knit-line strength and gloss but can increase plate-out. Because the glass fiber increases melt viscosity, screw recovery speed from 50 mm/s to 100 mm/s and back pressure from 0.5 MPa to 1.0 MPa are often used, but the settings must be adjusted to screw diameter and compression ratio.
Cavity pressure during fill is commonly held between 40 MPa and 70 MPa. Injection velocity should be profiled to maintain a closed melt front rather than to maximize speed, because high shear at the gate may raise local melt temperature above 300 °C and discolor the part. In hot-runner tools, manifold temperature should not exceed 290 °C; dead spots above 300 °C can create black specks. Gate freeze time can be longer than in semi-crystalline nylon, so pressure-trace monitoring is recommended to set switchover and holding time.
Gate design influences fiber orientation and part flatness. Because glass fibers orient in the direction of flow, modulus is anisotropic even in an amorphous matrix. In flat covers with a center sprue, flow-aligned fiber orientation increases stiffness radially but may reduce hoop stiffness near the perimeter. Replacing a center gate with a diaphragm gate or fan gate can improve directional balance, but it may increase pressure loss. When cavity fill time exceeds 2.0 s, the melt front can cool below the recommended mold temperature of 120 °C and create visible flow lines; raising mold temperature to the upper end of the range is then required.
Short shots and burn marks are common when the melt temperature is below 260 °C or when the nozzle contains residue from a previous semi-crystalline resin. Glass orientation at the melt front creates weak knit lines in thin ribs and around cores. Locating knit lines outside boss pull-out zones or raising mold temperature to 120 °C improves weld strength. Plate-out on P20 steel can accumulate within 5,000 cycles; vent depth above 0.02 mm can cause flash. In multi-cavity tools, a fill imbalance above 5% by shot weight often requires runner rebalancing rather than higher injection pressure, because higher shear at the gate can increase melt temperature and reduce viscosity locally.
The values in Table 1 are aggregated from publicly reported data for 30% glass-filled amorphous nylons and 30% glass-filled PA66. They are not lot-specific certifications for PX7006. All values should be confirmed by the manufacturer’s certificate of analysis.
| Property | Standard | 30% Glass-Filled Amorphous Nylon | 30% Glass-Filled PA66 |
|---|---|---|---|
| Density | ASTM D792 | 1.35–1.40 g/cm³ | 1.37–1.41 g/cm³ |
| Tensile strength at break | ASTM D638 | 130–160 MPa | 180–200 MPa |
| Tensile elongation at break | ASTM D638 | 2.0–4.0% | 3.0–5.0% |
| Flexural modulus | ASTM D790 | 8,000–9,500 MPa | 8,500–9,800 MPa |
| Notched Izod impact | ASTM D256 | 70–100 J/m | 90–120 J/m |
| Heat deflection temperature at 1.82 MPa | ASTM D648 | 120–150 °C | 240–250 °C |
| Mold shrinkage, flow/crossflow | ASTM D955 | 0.001–0.004 mm/mm | 0.003–0.006 mm/mm |
These differences mean that EnLon PX7006 is suitable where flatness, low mold shrinkage, and moderate heat resistance are required. Semi-crystalline PA66 remains preferred for continuous service above 200 °C or in contact with hot oil. The notched Izod penalty of the amorphous grade requires corner radii of at least 1.0 mm at load-bearing features.
Compliance claims for PX7006 must be sourced from the supplier’s lot-level declarations. The following matrix identifies the standards relevant to electrical and mechanical applications, but it does not establish a specific flammability rating for PX7006.
| Regulation/Standard | Scope | Documentation |
|---|---|---|
| RoHS 2011/65/EU | Lead, mercury, cadmium, hexavalent chromium, PBB, PBDE | Supplier declaration |
| REACH 1907/2006 | SVHC screening at 0.1% w/w | Candidate list declaration |
| UL 94 | Flammability class | UL yellow card; rating to be confirmed |
| ISO 1043 | Polymer marking | PA-GF30 |
Because amorphous nylon grades can vary by flame-retardant package, the absence of a UL yellow card for a particular lot should not be assumed to mean the product is unrated. The end-user must validate flammability in the final part geometry and thickness.
Batch-to-batch viscosity variation in glass-filled amorphous nylon can arise from fiber length distribution shifts during compounding and from moisture differences after drying. A melt flow index value alone is insufficient; spiral-flow or in-mold rheology at 270 °C is preferred. When melt residence time exceeds 8 min, nozzle temperature should be reduced toward 250 °C to limit thermal degradation. A viscosity shift above 10% from baseline in pin-gated tools can create fill imbalance and post-molding warpage.
Incompatibilities include contact with strong acids, halogenated hydrocarbons, and certain phenolic antioxidants at melt temperatures above 280 °C. Aromatic amorphous nylons may absorb moisture to levels near 1.0% at saturation; dimensional change must be accounted for in bushing press fits. For parts requiring repeated sterilization or hot-water exposure above 80 °C, semi-crystalline nylon or PBT should be evaluated because amorphous nylon can undergo stress-cracking under combined load and aqueous environments.
