| HS Code | 387354 |
| Density | 1.44 g/cm³ |
| Thermal Conductivity Through Plane | 6.0 W/m·K |
| Tensile Strength At Break | 55 MPa |
| Elongation At Break | 3% |
| Flexural Modulus | 8200 MPa |
| Flexural Strength | 105 MPa |
| Notched Izod Impact Strength | 3 kJ/m² |
| Heat Deflection Temperature At 1 80 Mpa | 115 °C |
| Melting Temperature | 178 °C |
| Volume Resistivity | 1E13 Ω·cm |
As an accredited Avient Therma-Tech™ NJC-6000 TC Nylon 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied as 25 kg bags of thermally conductive nylon 12 pellets, sealed to protect against moisture and contamination. |
| Container Loading (20′ FCL) | 20′ FCL container, palletized bags of Avient Therma-Tech™ NJC-6000 TC Nylon 12, loaded and secured for safe, dry transport. |
| Shipping | Avient Therma-Tech™ NJC-6000 TC Nylon 12 ships as solid pellets in sealed moisture-barrier bags or fiber drums. Protect from moisture, excessive heat, and direct sunlight. Transport via standard truck, rail, or ocean freight in dry, well-ventilated containers. Keep upright and secure. Not classified as dangerous goods under typical shipping regulations. |
| Storage | Store Avient Therma-Tech™ NJC-6000 TC Nylon 12 in its original sealed container in a cool, dry area away from direct sunlight, heat, and moisture. Keep containers tightly closed when not in use, as nylon can absorb humidity. Ideal storage conditions are below 30°C with low humidity. Protect from damage to prevent contamination. |
| Shelf Life | Shelf life is typically 5 years when stored in original, unopened packaging in a cool, dry environment. |
Avient Therma-Tech™ NJC-6000 TC Nylon 12 is reviewed only for downstream conversions where thermal conductivity, electrical insulation, and the low-moisture PA12 matrix produce a measurable engineering difference. The following scenarios are limited to documented application classes: electrified-mobility thermal management, LED heat-sink integration, power electronics housing, outdoor telecommunication enclosures, and industrial fluid-contact components. General-purpose mechanical parts, blow-molded containers, and extruded profiles without heat-transfer function are excluded from this review because the conductive filler system does not add design value and because published processing data for those geometries are limited. Melt viscosity should be characterized by ISO 1133-1:2022 under the supplier-specified temperature and load, and thermal conductivity should be measured on plaques by ISO 22007-2 rather than inferred from filler loading. Because the filler network is sensitive to screw shear, melt residence time, and weld-line formation, all parameters below are stated as ranges for production-scale injection molding and must be confirmed against the current Avient lot dossier.
In prismatic and pouch-cell module assembly, a dielectric material must transfer heat from cell faces to aluminium cooling plates without creating a galvanic path. Avient Therma-Tech™ NJC-6000 TC Nylon 12 is injection-molded into cell spacers, end-plate isolators, and cooling-plate mounting shoes. The relevant compliance framework includes IEC 60695-11-10 for UL 94 V-0 at 1.5 mm and 3.0 mm, IEC 60695-2-11 glow-wire ignition at 850 °C, IEC 60112 comparative tracking index, and UL 746B relative thermal index for long-term dielectric retention. The compound is used at 100 wt% as supplied; let-down with unfilled nylon 12 is not recommended because the filler-contact network that controls through-plane conductivity collapses before tensile modulus or flame performance changes. If regrind from a clean same-lot process is reintroduced, it should not exceed 15 wt% without re-testing through-plane conductivity, notched Charpy impact, and flame rating on color-matched plaques. The production route is direct injection molding with a 240–270 °C melt-temperature profile, 60–90 °C mold temperature, and a low-compression screw to reduce filler attrition. Hot-runner manifolds should avoid dead spots because residence-time dispersion creates local thermal-conductivity variation; weld lines should be positioned away from busbar contact regions via sequential valve gating. Terminal components include prismatic cell spacer frames, module end plates, cooling-plate insulator strips, and busbar retainers.
Automotive coolant pumps and thermal management valves expose polymer components to 50/50 water-ethylene glycol at temperatures up to 130 °C in closed circuits. PA12 is selected over PA66 where lower equilibrium moisture affinity reduces hydrolysis and dimensional growth during cold-soak to high-load cycling. In this application, Avient Therma-Tech™ NJC-6000 TC Nylon 12 is processed at 100 wt%; dry-blending with additional heat stabilizers, color masterbatch, or unfilled PA12 is not representative of the supplied stabilization package and may alter coolant-extraction behavior. No published universal let-down ratio exists for coolant-contact parts; any re-compounding trial must follow ASTM D471 or OEM-specific coolant immersion at 125 °C for 1,000 h and compare tensile strength retention against an unexposed control. Published data for this specific configuration is limited; coolant-aging tests must be run per OEM rather than inferred from PA12 homopolymer data. The compliance set includes ISO 527-2 for tensile properties, ISO 179-1/1eA notched Charpy impact at 23 °C and −30 °C, ISO 62 water absorption at 23 °C, and ISO 188 hot-air aging for thermal-oxidative resistance. Injection molding is performed on a 100–120 t toggle or electric press with a 20:1 L/D general-purpose screw and nitrided/hardened screw flights because ceramic or graphite filler abrasion accelerates screw and barrel wear. Mold temperatures of 70–100 °C and vent depths of 0.015–0.025 mm reduce gas trapping and knit-line porosity. Terminal components include impeller hubs, thermostat valve bodies, coolant distribution manifolds, and pump wear rings.
When luminaire designs replace full aluminium heat sinks with injection-molded thermally conductive polymer, the driving requirement is usually electrical isolation, reduced mass, or the ability to consolidate optical cavities and thermal surfaces into one part. Avient Therma-Tech™ NJC-6000 TC Nylon 12 is used for secondary heat sinks, driver housings, and overmolded aluminium PCB carriers. The regulatory stack is UL 8750 for LED equipment, IEC 60598-1 for luminaire construction, UL 94 V-0 at 1.5 mm or 3.0 mm, IEC 60695-2-11 glow wire at 750 °C, and IEC 60112 for tracking resistance. The material is processed at 100 wt% without secondary coating or potting that would create an insulating film over the heat-transfer surface; if painting is required for color matching, the paint layer should be limited to 10–25 µm and validated by ISO 22007-2 through-plane measurement before production. In overmolding, a 1.5–3.0 mm nominal wall is maintained over the aluminium carrier to balance thermal resistance and structural rigidity. The molding process uses a 100–160 t press, 230–260 °C melt temperature, 60–80 °C mold temperature, and hardened tool inserts where the compounded filler contacts core pins. Differential shrinkage between aluminium and PA12 causes sink marks if the carrier is colder than 80 °C; preheating the insert to 80–110 °C lowers early freeze-off and improves dimensional repeatability. Terminal products include downlight housings, track-light heat sinks, driver enclosures, and street-lamp power compartments.
High-voltage busbars, toroidal magnetics, and switching semiconductors in sealed on-board charger and DC-DC converter housings create a heat-flux condition that must be managed without adding an electrically conductive path. The PA12 matrix of Avient Therma-Tech™ NJC-6000 TC Nylon 12 supplies low moisture regain under condensation events, and the conductive filler reduces internal gas-temperature stratification. The material is used at 100 wt%; no release agent, external flame retardant, or mineral filler should be dry-blended, because surface additives lower comparative tracking index and alter flame-front behavior. If metal inserts are overmolded, the insert surface must be degreased and preheated to 90–120 °C to prevent premature polymer freezing and micro-gaps at the metal-polymer interface. Published data for this specific configuration is limited; CTI and RTI values for the final color-matched compound should be obtained from the current Avient dossier. The relevant compliance matrix includes IEC 60664-1 for creepage and clearance, IEC 60112 for CTI, UL 94 V-0 at 1.5 mm, UL 746B relative thermal index, and ISO 16750-2 for automotive electrical-equipment environmental loads. Molding is carried out with a 150–250 t press, 240–260 °C melt temperature, 70–100 °C mold temperature, and sequential valve gating that relocates weld lines away from sealing grooves. After molding, dielectric withstand testing is performed at 2.5 kV to 4.0 kV AC for 60 s as specified by the module dielectric test plan, and parts with visible flow-front hesitation marks are quarantined because filled thermally conductive compounds tend to form locally dense filler packing at hesitation lines. Terminal products include OBC front covers, DC-DC converter trays, busbar support isolators, and inverter control-board pockets.
| Application class | Primary standards and test methods | Typical wall thickness | Dominant process variable |
|---|---|---|---|
| EV battery module thermal interfaces | IEC 60695-11-10, ISO 22007-2, IEC 60112 | 1.5–3.0 mm | Weld-line position and hot-runner shear history |
| Automotive coolant pump and valve components | ASTM D471, ISO 62, ISO 527-2 | 2.0–3.0 mm | Glycol absorption and venting at knit lines |
| LED secondary heat sinks and overmolded carriers | UL 8750, IEC 60598-1, UL 94 V-0 | 1.5–3.0 mm | Insert preheat and paint-layer thermal resistance |
| OBC and DC-DC converter housings | IEC 60664-1, IEC 60112, UL 746B | 1.5–3.0 mm | CTI retention and flow-front hesitation marks |
| Outdoor telecom and handheld thermal enclosures | IEC 62368-1, UL 746C, ISO 527-2 | 0.8–1.5 mm | Thin-wall filler orientation and weld-line strength |
| E-drive terminal and busbar insulation | IEC 60664-1, IEC 60112, ISO 11359-2 | 0.75–2.0 mm | Insert temperature and micro-void formation |
At 0.8–1.5 mm nominal wall, outdoor small-cell radio backshells and industrial handheld thermal frames are molded to reduce mass while transferring heat from RF power amplifiers and embedded processors to the enclosure surface. Avient Therma-Tech™ NJC-6000 TC Nylon 12 is used at 100 wt% as supplied; no dry blending with virgin PA12 is used because thinning the walls already amplifies filler orientation and shifts thermal conductivity toward the flow direction. The compliance stack for outdoor information technology equipment includes IEC 62368-1, UL 94 V-0 at 1.5 mm, UL 746C for outdoor exposure, and IEC 60068-2-30 damp-heat cycling. Processing is high-speed injection molding with 220–250 °C melt temperature, 50–80 °C mold temperature, and injection speeds that minimize flow-front hesitation in living hinges and snap-fit features. The tool must use hardened gate inserts and sequential valve-gate control because filled thermally conductive grades show measurable pressure loss over long thin sections and tend to form filler-rich weld seams at the end of flow. Weld-line tensile strength is measured by ISO 527-2 using a molded plaque with a center-gated flow split, and production lots with weld-line retention below the OEM drawing limit are rejected. Terminal products include 5G small-cell backshells, ruggedized tablet frames, PCB thermal brackets, and outdoor router heat-spreader bases.
Under dynamic thermal loads during acceleration and regenerative braking, e-axle power terminals and phase-lead combs operate with brief temperature gradients across thin wall sections. A thermally conductive PA12 compound is selected because its lower saturated water content limits dimensional growth at the polymer-copper interface after condensation. In this scenario, Avient Therma-Tech™ NJC-6000 TC Nylon 12 is processed at 100 wt% without additional nylon 12, lubricant, or impact-modifier dry blends; organic lubricants may reduce comparative tracking index and promote interfacial slip around insert pins. The relevant compliance framework includes IEC 60664-1 for creepage and clearance, IEC 60112 for comparative tracking index, UL 94 V-0 at 0.75 mm where the flame-retarded version is used, ISO 11359-2 for thermo-mechanical analysis, and ISO 527-2 for weld-line tensile retention. The molding process is insert injection molding on a vertical clamp machine with 40–60 t clamping force and cavity pressure sensors. Copper busbars are preheated to 100–130 °C before insertion because low insert temperature causes polymer freeze-off before flow fills the surrounding bosses, producing micro-voids that fail high-potential testing. Weld-line placement is controlled with a single gate per boss, and each production lot is tested at 23 °C and −40 °C to verify Charpy impact and dielectric strength. Terminal components include phase-lead insulation combs, busbar support frames, terminal covers, and e-axle resolver housings.
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Avient Therma-Tech™ NJC-6000 TC Nylon 12 is a pelletized injection-molding compound based on polyamide 12 and a thermally conductive filler system. The product designation places it within the Therma-Tech family of heat-dissipating thermoplastics, where the numeric model field typically indicates the conductive series rather than a single isotropic thermal conductivity value. Grade-specific values for thermal conductivity, density, melt viscosity, tensile stress, flexural modulus, and heat deflection temperature must be obtained from the manufacturer’s technical data sheet; published data for this specific configuration is limited in open literature. The following discussion identifies the measurement standards, processing boundaries, and comparative design limits applicable to this class of thermally conductive PA12 compounds, and does not replace lot-specific certificates of analysis. The material is intended for injection-molded components in which heat dissipation, dimensional stability, and low moisture uptake are more important than maximum short-term thermal resistance.
Thermal conductivity measurements on thermally conductive thermoplastics are orientation-dependent. When specimens are molded and tested according to ISO 22007-2:2022 using the transient plane source method, or according to ASTM E1461 for comparative through-plane laser flash analysis, the in-plane thermal conductivity frequently exceeds the through-plane value because filler particles align in the flow direction during cavity filling. A design calculation that assumes isotropic thermal conductivity will therefore underestimate hot-spot temperature when heat transfer is primarily through the wall thickness. The anisotropy ratio, defined as in-plane conductivity divided by through-plane conductivity, has been reported for filled polymer systems in the range of 1.5 to 5.0, depending on filler aspect ratio and gate location. Electrical resistivity is determined by ASTM D257-14 or IEC 62631-3-2; electrically insulative grades of thermally conductive PA12 are controlled to surface resistivity levels above 1×1012 Ω and volume resistivity above 1×1010 Ω·cm for low-current contact applications. The grade must be confirmed as insulative, dissipative, or conductive from the supplier certificate; the distinction affects the need for protective grounding and creepage distances.
Test specimen preparation for thermal conductivity should follow ISO 291 conditioning at 23 °C and 50% RH, and the specimen thickness must be reported because filler orientation varies through the thickness. A comparison between grades without specimen thickness, gate location, and test method is not a valid engineering comparison.
Mechanical response under tensile and flexural loading is typically measured according to ISO 527-1:2019 and ISO 178:2019. The presence of rigid conductive fillers raises flexural modulus relative to unfilled PA12 while reducing strain at break because the filler-matrix interface acts as a stress concentration. Specific gravity determined by ASTM D792-20 is generally higher than that of unfilled PA12, often falling between 1.4 g/cm³ and 1.8 g/cm³ depending on the filler type and loading; designers should not substitute unfilled nylon 12 values in mass or inertia calculations. Heat deflection temperature under 1.8 MPa load is evaluated by ISO 75-2:2013. The PA12 matrix provides lower water absorption and better dimensional stability than PA6 or PA66 in humid service, but the conductive filler restricts chain mobility and can raise the crystallization response measured by differential scanning calorimetry.
Pre-drying in a desiccant drier at 80 °C for 4 h to 6 h is required before molding. Residual moisture is controlled to below 0.10 wt% because water vapor generates splay on part surfaces, reduces weld-line strength, and increases viscosity variation. Melt temperatures are maintained between 240 °C and 260 °C; mold temperatures between 40 °C and 80 °C are used to balance crystallization rate, dimensional stability, and surface finish. Injection molding machines with screw compression ratios from 2.0:1 to 3.0:1 and low-shear check rings are preferred because excessive shear fractures the conductive filler network and lowers thermal conductivity. Experience on production-scale lines indicates that shortened cushion, high back pressure, and undersized sprue diameters create filler orientation gradients and inconsistent part-to-part thermal performance.
Regrind from sprues and runners can be reintroduced at up to 20 wt% if the regrind is dried and not thermally degraded. Repeated melt processing reduces filler aspect ratio and can lower thermal conductivity by disrupting percolation; therefore lot-to-lot regrind fraction should be documented as part of process control.
Compounding of thermally conductive PA12 is performed on co-rotating twin-screw extruders with L/D ratios of 40:1 to 52:1. Conductive filler is typically fed downstream of the polymer melting zone to limit particle fracture. Specific mechanical energy input is controlled because excessive shear reduces filler aspect ratio and lowers thermal conductivity; batch-to-batch thermal conductivity is therefore sensitive to extruder screw design and throughput.
Mold shrinkage is anisotropic and should be characterized with plates that follow ISO 294-4:2018. Flow-direction shrinkage is typically lower than cross-flow shrinkage because oriented filler layers constrain contraction along the primary orientation axis. Tooling compensations based on unfilled PA12 shrinkage factors will produce dimensions outside tolerance for critical heat-transfer faces. Weld lines in thermally conductive PA12 parts show lower tensile strength than bulk material because the conductive filler network does not knit across the weld line. When weld-line tensile specimens are tested to ISO 527-1:2019, retention values in the class are commonly reported in the range of 50% to 70% of the non-weld-line strength; gate and runner layouts must move weld lines away from mechanical and thermal stress concentrations.
Melt viscosity is typically higher than unfilled PA12; capillary rheometry following ISO 11443 is used to generate viscosity curves for injection molding simulation. Thin-wall sections with shear rates above 103 s−1 may exhibit reduced through-plane thermal conductivity after filling because of flow-induced filler orientation; gate placement should keep the highest shear orientation away from the primary heat-transfer path. Clamp force requirements follow projected area and melt pressure; thermally conductive PA12 compounds often require injection pressures of 80 MPa to 120 MPa. Tools should use hardened steel, generous venting, and polished surfaces on non-functional regions because high filler loadings increase gas entrapment and tool wear.
Relative to PA6 and PA66-based thermally conductive compounds, PA12 offers lower saturated water uptake determined by ASTM D570-98. PA66 may absorb 7 wt% to 9 wt% at saturation, while PA12 typically absorbs 1.2 wt% to 1.8 wt%; this reduces moisture-induced dimensional change and attenuates the drop in dielectric strength in humid environments. The processing window is also lower, reducing energy input and enabling encapsulation of temperature-sensitive substrates. However, PA12 has a lower heat deflection temperature than PA66 and considerably lower continuous use capability than PPS. ISO 2578 comparative thermal index values for PA12 materials are generally below 120 °C, whereas PPS compounds may retain electrical and mechanical properties above 200 °C. In chemically aggressive underhood environments, PA12 provides resistance to automotive oils and greases, but strong mineral acids and phenols at elevated temperature cause surface attack and property loss.
Thermal conductivity differences among polymer matrices are secondary to filler loading and filler type. A PA12 compound may match the through-plane thermal conductivity of a PA66 compound while providing lower moisture sensitivity; however, the PA66 product will generally exhibit higher stiffness and higher short-term heat resistance. The specific grade NJC-6000 TC should be compared against Avient Therma-Tech PA66 or PPS grades only on the basis of the same test standard and specimen thickness, because thermal conductivity is not an intrinsic material constant in filled polymers.
The exact filler chemistry is not disclosed in open literature. Graphite-based thermally conductive compounds may show higher in-plane conductivity but are usually electrically conductive; boron nitride or alumina-filled systems are more likely to remain electrically insulative. The NJC-6000 TC grade should be evaluated for both thermal and electrical output before substitution into an existing design.
Die-cast aluminum alloys used in LED housings have thermal conductivity between 96 W/m·K and 160 W/m·K depending on alloy and casting porosity. Thermally conductive PA12 compounds typically fall in the range of 1 W/m·K to 10 W/m·K, and through-plane values are usually below 5 W/m·K. Direct metal replacement without increasing surface area or adding thermal vias is therefore not thermodynamically valid. A polymer heat sink becomes viable only when the total thermal resistance from junction to ambient remains within the LED manufacturer’s limits and when the polymer component eliminates a separate dielectric insulator or consolidates the housing, reflector, and heat sink into one molded part. Thermal resistance calculations use the conduction equation R = L/(kA) with material conductivity measured by ISO 22007-2:2022; junction temperature measurements are performed according to JEDEC JESD51-series methods.
Thermal resistance measurements on molded heat sinks should be performed with the actual interface material, mounting pressure, and ambient boundary condition. The apparent thermal conductivity extracted from a component-level test is not identical to material-level data because contact resistance, skin layers, and filler orientation contribute to the measured temperature rise. Finite element models for molded heat sinks require anisotropic thermal conductivity inputs measured from plaques with the same thickness and gate location as the production part. An isotropic input can misrank cooling design options when through-plane dissipation dominates.
For battery and power electronic enclosures, the material must survive dielectric withstand testing under ASTM D149 at specified voltage ramp rates. Surface contamination, moisture uptake, and filler orientation can reduce breakdown voltage. Parts molded with knit lines or excessive internal stress exhibit lower dielectric strength and higher thermal anisotropy; nondestructive evaluation by X-ray computed tomography or scanning acoustic microscopy can detect filler agglomerates above 50 µm that create localized heating under electrical load. In battery cooling module frames, the material is exposed to glycol-water coolants at temperatures up to 80 °C; long-term hydrolysis resistance must be validated with immersion testing according to ISO 175:2010 in the specific coolant formulation, not inferred from water absorption alone.
Operational boundaries include avoiding continuous contact with strong mineral acids, concentrated oxidizing agents, and phenols at elevated temperature. Glycol-water coolants above 80 °C accelerate hydrolysis of the polyamide chain, even though PA12 is more hydrolysis-resistant than PA6/66; coolant exposure must be validated by ISO 175:2010 immersion tests in the specific fluid. Long-term thermal cycling between -40 °C and 125 °C is commonly used to evaluate whether differential expansion between the conductive filler and the PA12 matrix creates microcracking or loss of thermal conductivity. Components exposed to underhood thermal cycling should be tested under load, not merely thermally aged without mechanical stress.
Electronic and lighting applications require supplier documentation for RoHS 2 Directive 2011/65/EU, REACH Regulation (EC) No 1907/2006, and IEC 62474 declarable substance lists. UL 94 flame classification is determined on molded specimens of specified thickness, commonly 0.8 mm or 1.5 mm, and the classification must match the end-use wall thickness. The compound is not offered for direct food contact unless a food-contact grade is explicitly certified under FDA 21 CFR or EFSA Regulation (EU) No 10/2011. No statement in this document replaces lot-specific certificates of analysis or supplier-approved processing guidelines.
