| HS Code | 838340 |
| Density | 1.38 g/cm³ |
| Tensile Strength | 55 MPa |
| Tensile Modulus | 6900 MPa |
| Elongation At Break | 3% |
| Flexural Strength | 80 MPa |
| Flexural Modulus | 5500 MPa |
| Izod Impact Strength Notched | 35 J/m |
| Melting Point | 191 °C |
| Heat Deflection Temperature 1 8 Mpa | 120 °C |
| Water Absorption 24h | 0.25% |
| Rockwell Hardness | R115 |
| Volume Resistivity | 1.0E14 ohm·cm |
As an accredited Ashley Polymers Ashlene 935-40M Nylon 11 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ashley Polymers Ashlene 935-40M Nylon 11 supplied in 25 kg net multilayer paper bags with polyethylene liner, palletized and stretch-wrapped. |
| Container Loading (20′ FCL) | Container loading: 20′ FCL of Ashley Polymers Ashlene 935-40M Nylon 11 resin, palletized bags, moisture-protected, secured for safe transport. |
| Shipping | Ashley Polymers Ashlene 935-40M Nylon 11 ships as non-hazardous plastic pellets in sealed 25 kg bags, palletized and stretch-wrapped. Protect from moisture and store in a dry area. Standard truck or ocean freight is suitable; avoid excessive heat and keep away from ignition sources during transport. |
| Storage | Store Ashley Polymers Ashlene 935-40M Nylon 11 in a cool, dry, well-ventilated area, away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent moisture absorption, which can affect processing. Avoid contact with strong oxidizers. Maintain stable temperatures and protect bags from physical damage. Follow all label and SDS guidelines. |
| Shelf Life | Store unopened in a cool, dry place; shelf life is typically 2 years from manufacture date. |
In compressed-air distribution modules for heavy-duty commercial vehicle braking systems, Ashlene 935-40M is processed into valve bodies, end caps, and threaded port housings where 40 wt% mineral reinforcement reduces mould shrinkage and stabilises bore geometry after humidity cycling. On a 160 t hydraulic clamp injection moulding machine with a 35 mm general-purpose screw at L/D 20:1, the compound was pre-dried for 4 h at 80 °C in a closed-loop desiccant dryer with a −40 °C dew point to hold residual moisture below 0.08 wt% by Karl Fischer titration per ISO 15512:2019. Barrel settings were 210 °C feed, 240 °C compression, 255 °C metering, and 255 °C nozzle with an actual melt-temperature reading of 257–263 °C by an Al-insert probe. Screw speed was limited to 50–80 rpm with 0.6 MPa back pressure. Mould temperature was held at 80 °C with water circulation. If melt temperature exceeds 270 °C for more than 5 min, the mineral-filled melt generates amine-end-group decomposition volatiles visible as silver streaks at gate lands and nozzle fogging. If melt temperature drops below 245 °C, the filler increases apparent viscosity enough to create short shots in sealing ribs thinner than 0.8 mm. Air leakage from threaded port housings is checked at 1.0 MPa internal pressure; the mineral-reinforced PA11 maintains insert retention under assembly bolt torque because the filler reduces creep. At −40 °C the PA11 backbone retains some cold-impact resistance, but the 40 wt% filler lowers elongation at break to below 15% under ISO 527-2:2012; therefore dynamic bending, snap-fit closures, and flexible airline service are outside the operational boundary.
The question controls material selection for underhood sensor housings and fluid connectors that must hold tolerances across −40 °C to 125 °C. The PA11 matrix resists moisture-driven dimensional drift better than PA6; the mineral filler further restrains hygroscopic expansion by reducing the volume fraction of water-absorbing polyamide. Under ISO 62:2008, 24 h water immersion of mineral-filled PA11 class materials typically produces 0.5–1.0 wt% uptake, whereas PA6 typically absorbs 2.0–2.5 wt% under identical conditions. Saturation values in water under ISO 62:2008 are approximately 1.8–2.0 wt% for PA11 and 9–10 wt% for PA6. The trade-off appears in impact: notched Charpy values under ISO 179-1:2010 fall from a class range of 10–15 kJ/m² for unfilled PA11 at 23 °C to 4–6 kJ/m² for 40 wt% mineral-filled PA11. Tensile modulus under ISO 527-2:2012 rises from 1,200–1,500 MPa to 3,400–4,500 MPa. Tooling therefore uses differential shrinkage allowances; ISO 294-4:2018 values of 0.8–1.0% in flow and 1.0–1.2% transverse are common for 40 wt% mineral-filled PA11 at 2 mm wall thickness. Oil sensor housings moulded with a 2.0 mm wall show warp reversal if the gate freezes before the packing phase ends; a 2.8 mm diameter gate land and 5.0 mm sprue bush radius hold gate freeze until barrel pressure compensation is complete. Through-transmission laser welding of mineral-filled PA11 requires the upper layer to be unpigmented and the lower layer to contain a near-infrared absorber; mineral filler scatters the 980 nm laser beam and cuts transmission, so a weld gap of ±0.05 mm is required. Moisture conditioning for 48 h at 40% RH reduces flexural modulus by 10–12% and raises elongation, which helps clip arms but harms connector-shell pin retention. If the component is exposed to hot water/glycol above 90 °C, the amide linkage hydrolysis rate increases; mineral-filled PA11 is not a substitute for hydrolysis-stabilised semi-aromatic polyamide in continuous coolant-contact parts.
Across underfloor rail transit cable-tray systems, the specification often prioritises low smoke density and low heat release before mechanical properties are evaluated. Ashlene 935-40M is evaluated for cable clips and junction-box mounting brackets because the PA11 backbone can generate lower smoke density than PA6 under ISO 5659-2:2017 at 25 kW/m² irradiance. The mineral filler increases residue formation, but the base grade is not inherently flame retardant; final parts must be tested against EN 45545-2:2020 R22/R23 in the exact part thickness and colour. Trackside wet/dry cycling shows that PA11-based clips swell less than PA6 after 24 h water immersion under ISO 62:2008, which keeps clip slot width stable in tunnel humidity. Post-mould shrinkage anisotropy requires clip retention features to be gauged with go/no-go fixtures after 48 h at 23 °C and 50% RH. If flame-retardant masterbatches are added, comparative tracking index under IEC 60112:2003 should be re-qualified because halogen or phosphorus packages can reduce the electrical tracking resistance of the final part.
Fuel vapor separator bodies and EVAP system fittings are a direct extension of the PA11 chemistry into continuous contact with fuel vapours and road de-icing agents. Under ASTM D543-21, immersion in Fuel C at 23 °C for 168 h typically produces weight change below 1.5% for mineral-filled PA11 class materials, while PA6 grades may reach 4–8% in comparable media. The difference arises from the lower amide group density in the C11 backbone; the mineral filler contributes a barrier phase but can also initiate interfacial microvoids when the part is cycled between dry heat and alcohol-containing fuels. For E10 fuel at 60 °C, continuous exposure requires tensile retention testing per ISO 527-2:2012 after 500 h; published data for this specific 40 wt% mineral-filled grade in E10 immersion is limited. In fuel system use, surface resistivity is not sufficiently low for static dissipation; carbon black or carbon nanotube additives are needed if the component must meet a surface resistivity below 10^6 Ω per IEC 62631-3-2:2016. The mineral loading limits permeation through the wall, but weld lines at threaded bosses remain the controlling leak path; processors use a 6 mm diameter single-edge gate at the boss root and a 0.02 mm vent depth to prevent burn marks. At −40 °C, impact around retention tabs is maintained only if corner radii are increased to a minimum of 1.5 mm; sharp corners create filler-matrix stress concentration and field failures under assembly impact.
Unlike its use in air brake modules, the evaluation of Ashlene 935-40M in industrial pneumatic valve manifolds focuses on insert pull-out and thread torque rather than leakage cycling. Brass inserts with M5 to M8 threads are fitted by ultrasonic insertion into moulded bosses; the mineral filler increases the hoop stiffness required for insertion, but the low water uptake of PA11 maintains thread torque after 1,000 cycles of 0–1.0 MPa pressure. Insert pull-out values for brass inserts in mineral-filled PA11 are not specified by a single harmonised standard; a fixture-based pull test at 10 mm/min on a 5 kN load cell is agreed between moulder and OEM. Compressed air lubricants can contain ester-based oils; PA11 resists ester oil swelling but the mineral filler may be extracted by phosphate esters above 70 °C. Prolonged contact with phosphate ester hydraulic fluids should be validated under ISO 175:2010 at the operating temperature. Tooling for manifold bodies requires a vent depth of 0.015 mm to avoid gas traps at blind bosses; the filler increases melt pressure drop, so gate sizes are 30–50% larger than for unfilled PA11.
Connector carriers for high-voltage electric vehicle platforms are evaluated for dimensional precision, pin retention, and electrical tracking resistance after thermal shock. The 40 wt% mineral reinforcement in Ashlene 935-40M raises tensile modulus to the class range of 3,400–4,500 MPa under ISO 527-2:2012, which supports pin retention in 0.8 mm terminal pockets. However, the filler and lubricant package can reduce comparative tracking index relative to unfilled PA11; a CTI value of 450–600 V is common for mineral-filled PA11 compounds under IEC 60112:2003, but each lot must be qualified on the final part. Dielectric strength at 2 mm under IEC 60243-1:2013 may fall in the 20–25 kV/mm range, and mineral filler can create weak spots at weld lines. After thermal cycling from −40 °C to 125 °C for 500 cycles, no cracks are expected if the terminal pocket corner radius is at least 0.6 mm and the gate is positioned away from the terminal retention latch. If glow wire ignition per IEC 60695-2-13:2021 at 750 °C is required, the base grade must be tested with the exact colour and mineral distribution; colour concentrates can alter the glow wire result. Because PA11 absorbs less moisture than PA6, dielectric properties remain more stable across 50% RH and 23 °C, but weld-line tensile strength under ISO 527-2 is only 60–70% of the bulk value.
This application boundary differs from dynamic flex layers because the 40 wt% mineral filler suppresses the elongation required for repeated flexure. PA11 is qualified in dynamic unbonded flexible pipe pressure sheaths only in unreinforced extrusion grades with elongation above 200%; a mineral-filled injection grade is therefore limited to rigid clamp rings, bend limiter end rings, and connector strain relief housings. Under ISO 527-2:2012, 40 wt% mineral-filled PA11 typically fails by brittle fracture at 5–10% strain, which is unacceptable for dynamic bend fatigue. The benefit is dimensional stability in saltwater immersion: water uptake after 24 h under ISO 62:2008 remains below 1.0 wt%, compared with 2.0 wt% or more for PA6. For deepwater service, hydrolysis at temperatures above 80 °C remains the limiting condition; published data for 40 wt% mineral-filled PA11 in seawater at 80 °C is limited. Moulders must avoid hydrolytic degradation during processing by keeping moisture below 0.08 wt% and by purging the barrel with an unfilled PA11 or acrylic purge compound after shutdown. The mineral phase also requires a wear-resistant screw and barrel because calcium carbonate or wollastonite fillers can increase screw flight wear on 20:1 L/D machines after 5,000–10,000 production hours.
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Ashley Polymers Ashlene 935-40M Nylon 11 is introduced as a mineral-reinforced polyamide 11 compound; the 40M suffix is consistent with a mineral filler loading of 40% by weight in a Nylon 11 matrix. The grade is intended for injection-molded and extruded parts in which the low moisture uptake of Nylon 11 must be combined with lower post-mold shrinkage anisotropy and increased flexural modulus relative to unfilled Nylon 11. Published data for this specific configuration is limited; the technical conditions recorded below therefore combine product-designation information with class-typical data for mineral-reinforced Nylon 11 systems and should be checked against a lot-specific certificate of analysis before tool release.
In the base polyamide 11 chain, the 11-carbon repeat unit reduces the amide-group concentration compared with Nylon 6 and Nylon 66. This chemical structure lowers equilibrium moisture absorption at 23°C and 50% RH, improves retention of electrical resistivity after conditioning, and gives low-temperature impact performance closer to that of polyolefin-modified polyamides. The 40 wt% mineral filler phase further reduces hygroscopic expansion because the mineral particles are impermeable to water and reduce the volumetric fraction of moisture-responsive polyamide. For parts that must maintain a flat sealing face after 48 h of conditioning per ISO 291, this filler architecture is used to limit growth to the lower end of the tolerance band.
Thermal stability during processing is governed by the polyamide backbone rather than the mineral phase. The melting range of Nylon 11 is typically 183°C to 189°C; degradation accelerates when melt stock is held above 260°C for more than 5 min. The use of heat-stabilized formulations is common in mineral-filled grades intended for automotive underhood environments, but the specific stabilization package in 935-40M has not been published in the available technical review. If continuous-use temperatures above 120°C are required, long-term heat-ageing data should be obtained from the manufacturer rather than inferred from short-term HDT values.
Melt-processing latitude is constrained primarily by residual moisture and residence time. When the melt contains more than 0.15 wt% water, hydrolysis of the amide linkage reduces molecular weight and generates splay or silver streaks at the part surface. Pre-drying is therefore performed in a desiccant dryer with a dew point below −20°C and inlet air temperature of 80°C. Virgin granulate typically requires 4 h to 6 h; regrind that has been exposed to ambient air at relative humidity above 60% may require 8 h at 80°C. Residual moisture is verified by coulometric Karl Fischer titration per ISO 15512 and should not exceed 0.10 wt% to 0.15 wt% before melt processing.
Barrel temperature settings for a 40 wt% mineral-filled Nylon 11 grade are generally 220°C to 250°C, increasing from rear to nozzle. Mold temperature is held between 60°C and 90°C; higher settings improve crystallinity and post-mold dimensional stability but increase cycle time. On an injection molding machine with 1500 kN clamp force and a 40 mm general-purpose screw, shot size should remain between 30% and 70% of barrel capacity to limit thermal history. Back pressure of 0.3 MPa to 0.7 MPa and hold pressures in the 60 MPa to 80 MPa range are typical starting points for multicavity tools; these parameters require optimization using short-shot studies and pressure-drop measurements.
On compounding lines, a L/D 32:1 twin-screw extruder with an atmospheric vent and a vacuum vent is used to disperse the mineral phase without excessive frictional heat. Filler particle size distribution can shift melt viscosity by approximately ±10%; ash residue per ISO 3451-1 and compound density per ISO 1183-1:2019 should be monitored from lot to lot. Surface treatment or coupling chemistry is common in this filler class to retain tensile yield strength, but the specific coupling system in 935-40M has not been disclosed in the public documentation reviewed.
Regrind use is possible at 20 wt% to 30 wt% with virgin granulate if the regrind is dry, free of oil, and processed under the same thermal history. Higher regrind levels increase the risk of black specks and property loss because the mineral phase can be dislodged during repeated screw shear. A single-pass regrind study should be conducted with tensile bars per ISO 527-1/2 and notched impact specimens per ISO 180/A before production release. If the material has been stored in open containers at relative humidity above 60%, re-drying at 80°C is mandatory.
Conditioning at 23°C and 50% RH per ISO 291 affects mineral-filled and unfilled Nylon 11 differently. Unfilled Nylon 11 may absorb 1.1 wt% to 1.5 wt% moisture at 50% RH; a mineral-reinforced system with 40 wt% filler typically absorbs 0.8 wt% to 1.2 wt%. The reduced water uptake lowers hygroscopic growth and helps maintain flatness in thin-walled parts that are assembled without gaskets. Published data for this specific configuration is limited; the comparative ranges below are class-typical values for mineral-filled Nylon 11 and are not lot-specific release values.
| Property | Test method | 40 wt% mineral-filled Nylon 11 | Unfilled Nylon 11 | 30 wt% glass-filled Nylon 11 |
|---|---|---|---|---|
| Density | ISO 1183-1:2019 | 1.42–1.46 g/cm³ | 1.03–1.05 g/cm³ | 1.24–1.28 g/cm³ |
| Tensile yield stress | ISO 527-1/2 | 45–55 MPa | 40–50 MPa | 80–100 MPa |
| Flexural modulus | ISO 178 | 2.4–3.0 GPa | 0.9–1.2 GPa | 4.0–5.0 GPa |
| Notched Izod impact | ISO 180/A | 5–8 kJ/m² | 8–12 kJ/m² | 7–10 kJ/m² |
| Water absorption at 50% RH | ISO 62 | 0.8–1.2 wt% | 1.1–1.5 wt% | 0.9–1.3 wt% |
Because the mineral phase restricts chain mobility, creep under sustained load is lower than unfilled Nylon 11, while notched impact strength is reduced. Mold shrinkage per ISO 294-4 is generally 0.8% to 1.0% for the mineral-filled class, with lower flow-to-transverse differential than unfilled Nylon 11. For flat parts with wall-thickness transitions, tool designs that maintain a shrinkage differential below 0.1% reduce sink-mark formation and warpage. Post-mold dimensional checks after 48 h at 23°C and 50% RH are used to establish acceptance limits before production release.
For fluid-handling bodies used in compressed-air circuits and industrial pneumatic valve components, the 935-40M grade is evaluated for post-mold flatness in 8-cavity tools and for resistance to zinc chloride stress cracking under molded-in hoop stress. On production machines, short shots in thin ribs occur when melt temperature falls below 230°C or when hold pressure is insufficient; burning and resin degradation in hot runner drops occur when the melt exceeds 250°C or when the material is held above 260°C for more than 5 min. If the tool uses a hot runner system, the manifold and nozzle should be designed for low-pressure drop and the resin should be purged with polyamide grade after idle periods. Because the mineral filler lowers ductility, sharp corners and notches should be radiused to at least 0.5 mm to avoid brittle failure under impact.
Electrical terminal blocks and sensor housings are additional applications in which mineral-filled Nylon 11 is used because lower moisture uptake preserves surface resistivity under humid conditions. Comparative tracking index and dielectric strength should be measured per IEC 60112 and IEC 60243-1 on final parts because mineral filler type and moisture content alter electrical performance. Published data for 935-40M in this specific configuration is limited; electrical property values should be obtained from the manufacturer for the intended wall thickness and conditioning protocol.
Compared with unfilled Nylon 11, Ashlene 935-40M provides higher flexural modulus, lower mold shrinkage anisotropy, and reduced creep under load, but lower elongation at break and lower notched impact strength. Unfilled Nylon 11 is selected when ductility and chemical resistance are more important than flatness; the mineral-filled grade is selected when a part must remain flat after moisture conditioning and must resist compressive loading without excessive deflection. The 40 wt% filler also increases density and can increase flow pressure drop through thin gates and long flow paths.
Compared with glass-fiber-reinforced Nylon 11, the mineral-reinforced grade produces less fiber-orientation-induced warpage and a smoother surface finish but lower tensile strength and flexural modulus. Glass-filled Nylon 11 may exhibit tensile yield stress of 80 MPa to 100 MPa and flexural modulus of 4.0 GPa to 5.0 GPa, whereas the mineral-filled class is generally below 55 MPa tensile yield and below 3.0 GPa flexural modulus. The choice between these systems depends on whether warpage control or maximum stiffness governs the part design.
Relative to Nylon 6 and Nylon 66, the Nylon 11 matrix provides lower moisture uptake, lower density, and better retention of mechanical properties at low temperatures. The trade-off is lower tensile strength and heat deflection temperature. A 40 wt% mineral filler partially compensates for the lower stiffness of Nylon 11 but does not raise heat resistance to Nylon 66 levels. For food-contact applications, the manufacturer’s product-specific statement under 21 CFR 177.1500 must be obtained because the filler package is part of the compliance assessment. The product is not recommended for continuous exposure to strong mineral acids or to aqueous solutions above 80°C unless stress-cracking studies confirm suitability.
