| HS Code | 166588 |
| Base Resin | Nylon 12 |
| Reinforcement | 30% Glass Fiber |
| Density | 1.23 g/cm³ |
| Tensile Strength At Break | 110 MPa |
| Elongation At Break | 3% |
| Flexural Modulus | 6.5 GPa |
| Flexural Strength | 160 MPa |
| Izod Impact Notched | 80 J/m |
| Heat Deflection Temperature At 1 82 Mpa | 170 °C |
| Melting Point | 178 °C |
| Water Absorption 24h | 0.20% |
| Dielectric Strength | 25 kV/mm |
As an accredited Ashley Polymers Ashlene TD930H Nylon 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ashley Polymers Ashlene TD930H Nylon 12 is packaged in 25 kg moisture-barrier bags, palletized and wrapped for safe transport. |
| Container Loading (20′ FCL) | One 20-foot FCL container loaded with Ashley Polymers Ashlene TD930H Nylon 12, securely packed, palletized, and braced for safe transit. |
| Shipping | Ship Ashley Polymers Ashlene TD930H Nylon 12 as solid resin pellets in sealed, moisture-proof bags or containers. Keep dry, away from extreme heat and ignition sources. No special hazmat classification usually applies, but label clearly and secure skids to prevent shifting during transit. |
| Storage | Store Ashley Polymers Ashlene TD930H Nylon 12 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid dust accumulation. Store away from strong oxidizers. Follow manufacturer’s guidelines and local regulations for handling and disposal. |
| Shelf Life | Shelf life is indefinite when stored dry, cool, and sealed; avoid moisture absorption to preserve properties. |
Ashlene TD930H Nylon 12 is converted in extrusion and injection molding operations where low equilibrium moisture uptake, resistance to zinc chloride stress cracking, and retention of elongation after thermal aging appear on the purchase specification. Drying at 80–90 °C to residual moisture below 0.10% is the common precondition across downstream lines; lot-to-lot solution viscosity by ISO 307 and melt volume-flow rate by ISO 1133-1:2022 serve as incoming quality gates. The scenarios below are restricted to sectors with documented commercial use of nylon 12 and are not presented as an exhaustive list.
Heavy-duty truck and trailer air brake tubing in 1/4 inch, 3/8 inch, and 1/2 inch outside diameter is extruded from nylon 12 because the tube wall must retain burst strength after exposure to road de-icing salts and lubricant mist at elevated underbody temperatures. Compliance documentation for the finished tube references SAE J844, supplementary testing under ISO 7628-1:2010, and production traceability aligned to D.O.T. FMVSS 106 where the tube is installed in brake circuits. Formulation addition ratio on the converting line commonly sets 100 phr of dried TD930H as the binder resin; the only letdowns recorded on run sheets are a carbon black ultraviolet masterbatch at 2–3 wt% and internal clean regrind not exceeding 15 wt%. Regrind above 15 wt% reduces elongation at break measured by ISO 527-2 because the thermal history of the reprocessed fraction carries oxidized chain ends and lowers molecular weight. Downstream production uses a single-screw extruder with 24:1–30:1 L/D, a barrier screw with a Maddock mixer, and a screen pack of 60/80/100 mesh. Melt temperature is held between 220 °C and 245 °C, while the vacuum sizing tank and post-die cooling are controlled to 20–40 °C water temperature to freeze the tube without producing spherulite banding. Draw ratio is preferred at 1.05:1–1.15:1; higher draw induces orientation that may improve burst strength but reduces hoop stress uniformity. The critical process threshold is moisture: if the resin enters the barrel above 0.10% moisture, hydrolysis generates microvoids that fail continuous burst pressure tests and create sites for zinc chloride crack initiation. Terminal finished products are coiled air brake tubing assemblies, cut lengths with pre-formed bends, and push-to-connect tube runs for pneumatic brake control circuits.
Multilayer fuel vapor return line coextrusion places Ashlene TD930H Nylon 12 in the outer jacket where zinc chloride exposure from road de-icing salts, stone impact, and underbody flex fatigue are the dominant failure mechanisms. Specification for the assembly follows SAE J2260 for low-permeation fuel tubing, with permeation performance verified by test method SAE J1737; material extraction is reviewed against FDA 21 CFR 177.1500 where the tube contacts fuel that may later combust. Addition ratio for the outer layer is 75–85 wt% TD930H, 10–20 wt% maleated impact modifier, and 0.5–1.0 wt% heat-stabilizer package; the inner conductive layer is diluted from a polyamide-compatible carbon black masterbatch at 15–25 wt% to achieve surface resistivity below 10⁶ ohm/sq when measured by ASTM D257. Downstream production is a five-layer coextrusion line with melt pumps controlling each layer, a mandrel die with radial layer distribution, and vacuum calibration. The TD930H outer layer is processed at 230–250 °C, with melt pressure variation held within ±2% to avoid layer-to-layer flow anomalies. Tie-layer thickness is maintained at 5–10% of total wall; below this range, delamination occurs after cold impact at -40 °C under SAE J2260 low-temperature testing. The terminal product is formed multi-layer fuel vapor return tubing, reeled for OEM assembly and cut into underbody line sets.
Catheter shaft extrusion with Ashlene TD930H Nylon 12 is specified when the finished device must survive ethylene oxide or gamma sterilization without the surface tack and dimensional drift observed in lower-melt polyamides. Biocompatibility documentation for the compound follows ISO 10993-1:2018, cytotoxicity by ISO 10993-5, and bacterial endotoxin limits by USP 85; the base resin is reviewed against FDA 21 CFR 177.1500 and the converter’s device master file where applicable. Typical formulation addition ratio for a catheter shaft is 80–92 wt% TD930H and 8–20 wt% barium sulfate radiopacifier masterbatch, with no external plasticizer because migration into the lumen or packaging is treated as a nonconformance. Downstream production uses a precision single-screw extruder with 24:1 L/D, a gear pump, and a closed-loop laser outside-diameter gauge; melt temperature is limited to 215–240 °C. The extrudate is quenched in water at 20–30 °C, annealed at 60–80 °C for 2–4 h, and cut in a Class 8 cleanroom. The critical process window is post-sterilization shrinkage: without annealing, gamma irradiation at 25–40 kGy can push change in length beyond 1.5%, which is the common upper control limit on catheter drawing records. Terminal finished products include introducer sheaths, angiographic catheter jackets, and radiopaque tubing subassemblies.
Offshore pneumatic actuation circuits on coastal platforms use nylon 12 control lines where hydrostatic ageing, salt mist, and cold-temperature bend cycles are recorded replacement drivers. Compliance is anchored to ISO 4414 for pneumatic system design and ISO 8573-1 for compressed air quality, with material traceability under REACH. Addition ratio of TD930H in the tube compound is 100 phr; process aid is kept at 0.1–0.3 phr to prevent die lip deposit, and clean post-industrial regrind is permitted to 20 wt% provided the fraction is dried and blended for not less than 20 min in a low-shear tumble mixer. Downstream production uses a grooved-feed single-screw extruder with 30:1 L/D, a double vacuum calibration tank, and an online spark tester set to 6 kV mm⁻¹. Melt temperature is maintained at 235–250 °C; the first water bath is set at 40–60 °C, and the second at 15–25 °C to control crystallinity. The observed process failure is surface chatter when screw speed exceeds melt pump capacity; control charts for melt pressure set an alarm at ±3% of target. Terminal finished products are coiled pneumatic control tubing in metric outside diameters from 4 mm to 12 mm, used for valve actuation and instrument air runs.
Nylon 12 sheathing over thermoplastic polyurethane insulation is selected for high-flex automation track cables because the outer jacket must resist abrasion against metal cable-carrier links while retaining flexibility at -40 °C. Jacket compliance testing follows UL 1581 for cable jacket physical properties and IEC 60332-1-2 for flame propagation; surface resistivity is documented by ASTM D257. Formulation addition ratio uses 100 phr TD930H with an anti-blocking additive at 0.1–0.2 phr; halogenated flame-retardant packages are excluded because they embrittle the sheathing and raise abrasion loss in drag chain oscillating cycles. Downstream production is pressure extrusion in a single-screw extruder with 24:1 L/D, melt temperature 230–245 °C, conductor preheating at 60–80 °C, air gap 10–30 mm, and cooling trough at 20–30 °C. Online diameter control holds sheath wall thickness to ±0.03 mm; wall below 0.15 mm is rejected because cold impact after 500,000 flex cycles produces jacket cracking at the cable-carrier bend radius. Terminal finished products are robotic track cables, drag chain power and signal cables, and flexible servo cable jackets.
Sports eyewear frames and hinge components molded from Ashlene TD930H Nylon 12 are tested for impact fatigue at -10 °C to -20 °C, because frame failure during cold-climate use occurs as hinge barrel cracking rather than gross fracture. Protective eyewear compliance is referenced to ANSI Z87.1-2020, and spectacle frame mechanical testing follows ISO 12870:2016. Formulation addition ratio uses dried TD930H as the base resin with short glass fiber added at 15–25 wt% by gravimetric dosing, organosilane coupling agent at 0.2–0.5 phr, and carbon black ultraviolet masterbatch at 0.5–1.0 wt%. Downstream production is injection molding on a machine with clamp force 80–120 t, melt temperature 240–260 °C, mold temperature 60–80 °C, and injection speed 40–80 mm/s. Hold pressure is maintained at 50–70 MPa until cavity pressure transducers detect gate freeze. Published mechanical data for this specific TD930H glass-filled eyewear configuration is limited; converters should qualify lot-specific Charpy notched impact per ISO 179-1/1eA and moisture-conditioned tensile per ISO 527-2. Terminal finished products are sports protective frames, hinge inserts, and cold-climate eyewear components.
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Ashley Polymers Ashlene TD930H Nylon 12 is a semi-crystalline polyamide 12 resin identified under ISO 1043-1 as PA12. The monomer laurolactam yields a repeat unit with 12 carbon atoms between amide functionalities; the lower amide density relative to PA6 and PA66 controls lower equilibrium moisture absorption, lower melting temperature, and lower dry tensile modulus. Published grade-specific data for Ashlene TD930H are limited, so the ranges presented in the following sections are family-typical for unfilled PA12 and should not replace a lot-specific certificate of analysis. The alphanumeric suffix H is consistent with a heat-stabilised variant in the Ashlene nylon 12 portfolio, but the complete additive package is supplier-controlled and should be confirmed before the grade is specified for thermal-endurance service.
Where dry-as-moulded values are needed for preliminary design, unfilled PA12 typically has a density of 1.01–1.04 g/cm³ per ISO 1183-1:2019. Tensile yield stress from ISO 527-2/1A specimens is commonly 35–50 MPa, while elongation at break can exceed 200% in grades with higher molecular weight or plasticisation. Flexural modulus measured under ISO 178 typically falls between 0.9 GPa and 1.6 GPa. Notched Izod impact at 23 °C is reported in the range 8–20 kJ/m² under ISO 180/A. Cold-temperature impact is not represented by that single value: PA12 can retain toughness below -40 °C when impact-modified or processed with adequately low moisture. The property set in Table 1 is not a specification for TD930H.
| Property | Test Method | Unit | Typical Range |
|---|---|---|---|
| Density | ISO 1183-1:2019 | g/cm³ | 1.01–1.04 |
| Tensile yield stress | ISO 527-2/1A | MPa | 35–50 |
| Tensile elongation at break | ISO 527-2/1A | % | 150–300 |
| Flexural modulus | ISO 178 | GPa | 0.9–1.6 |
| Notched Izod impact, 23 °C | ISO 180/A | kJ/m² | 8–20 |
| Melting temperature | ISO 11357-3 | °C | 172–180 |
| Heat deflection temperature, 0.45 MPa | ISO 75-2/B | °C | 90–120 |
| Water absorption, saturation at 23 °C | ISO 62 | % | 1.4–1.8 |
| Volume resistivity | IEC 62631-3-1 | Ω·cm | 1013–1014 |
Conditioning specimens under ISO 291 at 23 °C and 50% RH reduces flexural modulus and tensile yield stress and increases elongation. Design evaluations for humid service should therefore use conditioned property data, not dry-as-moulded values. Melt volume-flow rate should be requested under ISO 1133-1:2022 at 235 °C with a 2.16 kg load. Extrusion-grade PA12 generally requires lower melt flow to resist draw resonance, whereas injection-moulding grades may use higher flow for thin-wall filling.
Moisture control is the first processing constraint. PA12 absorbs less water than PA6 or PA66, but melt-phase hydrolysis can still reduce molecular weight and generate bubbles, surface sloughing, or die lines. The pellets should be dried to 0.10–0.15 wt% residual moisture with a desiccant dryer capable of a dew point below -30 °C. Typical drying conditions are 80 °C for 4–8 h; when storage relative humidity exceeds 60%, the drying interval may require extension to 12 h. Temperatures above 90 °C for extended periods tend to cause surface oxidation and yellowing. The feed throat should be water-cooled to 40–60 °C to prevent pellet bridging.
The usable melt-temperature window is narrower than those of PA6 and PA66. The melting point of PA12 is 172–180 °C by ISO 11357-3. Thermal degradation accelerates above 250 °C, giving a practical processing window of roughly 40 °C between complete melting and the onset of oxidative or thermal degradation. In injection moulding, barrel temperatures are typically set with a rear zone at 210 °C, middle zones at 220–230 °C, and a nozzle at 230–240 °C. Mould temperature is maintained at 40–60 °C for general-purpose parts and 60–80 °C where higher crystallinity and dimensional accuracy are required. Unfilled PA12 post-mould shrinkage is commonly 0.7–1.2% in the flow direction and 0.8–1.4% transverse, measured under ISO 294-4. The injection screw should have an L/D of 20:1–25:1, and regrind from sprues and runners should not exceed 20 wt% without validation because moisture and thermal history accumulate across recycling.
On single-screw extrusion lines for tubing, barrels with L/D 24:1–30:1, compression ratio 2.5:1–3.5:1, and screen packs of 60/80/100 mesh are used. The melt temperature at the head should be 220–230 °C. Die pressures for small-diameter PA12 tube are commonly 10–20 MPa; sustained pressure oscillation above ±2% of setpoint is associated with online wall-thickness variation and ovality. For thin-wall tube, draw-down ratios of 2:1–4:1 and draw ratios near 0.8:1–1.2:1 are used with vacuum calibration at 30–50 °C water temperature. Melt residence time should be kept below 15 min at processing temperature to limit yellowing and viscosity shift. Cable jacketing lines use the same drying and melt-temperature range, with fine melt filtration to remove gel particles before the die.
The substitution case for PA12 is strongest where humid ageing, cold impact, and dimensional stability govern failure risk. Under ISO 62, PA12 reaches saturation at about 1.4–1.8%; PA6 and PA66 saturate at approximately 9–10% and 7–9%, respectively. That difference changes in-service part geometry: a PA12 component absorbs less water and retains a higher percentage of its dry flexural modulus in a humid engine or fuel-system environment. However, PA12 has lower dry tensile strength and flexural modulus than PA66. Replacement is therefore not a drop-in when high stiffness or creep resistance is required. The design often needs increased section thickness, ribs, or a shift to a reinforced grade. PA11 is also a low-moisture aliphatic polyamide, but it has a slightly different melt and crystalline morphology and supplier-specific stabiliser packages. Comparative data for TD930H against PA11 should be obtained from the supplier before cross-specification.
Energy input during melting is lower because the PA12 melting temperature is roughly 30–50 °C lower than that of PA66. Barrel temperatures are reduced, and cycle time may shorten if mould cooling is held constant. In pressure-bearing parts, long-term hydrostatic strength regression is more relevant than short-term burst. Testing under ISO 1167 or equivalent product-specific methods is required because creep rupture and chemical ageing dominate service life in reinforced and unreinforced PA12 piping or tubing.
Heat-stabilised PA12 compounds resist oxidative degradation by consuming phenolic or hindered-amine stabilisers over time. The useful continuous-use temperature in air for an unfilled PA12 part is generally limited to 80–100 °C when under load, although stabilised variants may withstand short-term excursions to 120 °C in service. Long-term heat-ageing tests are conducted under ISO 188 or ISO 2578 and are used to establish relative thermal index values. Those values are not batch-independent and depend on wall thickness, oxygen access, load, and chemical environment. A conservative safety margin should be applied when using the H-suffixed TD930H in continuous hot-air or hot-oil environments, and the supplier datasheet should be referenced for the specific stabiliser package.
Automotive fluid-handling applications use PA12 in air-brake tubing evaluated under SAE J844 and in fuel-line constructions under SAE J2260 or DIN 73378. PA12 alone is not an adequate hydrocarbon barrier for many current evaporative emission requirements; multilayer tubes use PA12 as the inner or outer layer around ethylene-vinyl alcohol barrier layers. For pneumatic tubing, the material’s low moisture uptake helps maintain pressure rating and outer diameter in humid compressed-air systems. Cable jacketing and industrial tube applications specify PA12 where cold flexibility and abrasion resistance are required. The material’s volume resistivity under IEC 62631-3-1 is typically 1013–1014 Ω·cm, but flame-retardant and low-smoke formulations require separate compounding and test data. Injection-moulded clips, connectors, and cable ties made from PA12 exhibit low water absorption and resistance to aliphatic oils, but compatibility with the actual fluid at the maximum service temperature must be confirmed by immersion testing under ISO 175 for 500–1000 h.
Regulatory compliance for a specific PA12 article is not established by resin chemical structure alone. Stabilisers, processing aids, colourants, and final article geometry influence the applicability of standards. Table 2 lists the assessment framework, not a declaration of compliance for Ashlene TD930H.
| Application Area | Standard or Test Method | Assessment Focus |
|---|---|---|
| Air brake tubing | SAE J844 | Cold impact, burst pressure, dimensional stability |
| Automotive fuel vapour tubing | SAE J2260, DIN 73378 | Permeation, heat ageing, fuel compatibility |
| Chemical resistance | ISO 175 | Mass, dimension, appearance change after immersion |
| Food contact | FDA 21 CFR 177.1500 | Extraction limits applicable to nylon resins |
| Medical device evaluation | ISO 10993-1 | Biocompatibility characterisation of the finished article |
| Electrical insulation | IEC 62631-3-1 | Volume resistivity |
| Comparative tracking resistance | IEC 60112 | Proof tracking index of the moulded surface |
| Flammability | IEC 60695-2-12 | Glow-wire ignition for finished parts |
Chemical exposure boundaries for unfilled PA12 include concentrated mineral acids, strong oxidising agents, and certain polar organic solvents at elevated temperature. Stress-cracking agents such as zinc chloride solutions or alkaline metal salts can produce environmental stress cracking in highly stressed mouldings. Fuel-contact service requires testing against oxygenated alcohols and biodiesel blends; swelling and permeation can change with alcohol content and temperature. Electrical and electronic applications require tracking resistance per IEC 60112 and, where applicable, glow-wire ignition temperature per IEC 60695-2-12. For medical or food-contact use, the grade and colour package must be confirmed against FDA 21 CFR 177.1500 or ISO 10993-1 as appropriate, because stabiliser and processing aids can alter regulatory status. The material should not be combined with amine-based additives that could exchange with the amide network or accelerate chain scission unless specifically validated for the application.
