| HS Code | 248389 |
| Density | 1.38 g/cm³ |
| Melting Point | 178 °C |
| Thermal Conductivity | 1.0 W/m·K |
| Tensile Strength | 42 MPa |
| Tensile Elongation At Break | 4 % |
| Flexural Modulus | 5800 MPa |
| Flexural Strength | 88 MPa |
| Izod Impact Notched | 4 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 140 °C |
| Heat Deflection Temperature 1 8 Mpa | 80 °C |
| Volume Resistivity | 1.0E14 Ohm·cm |
| Flammability Rating | HB |
As an accredited Avient Therma-Tech™ NJ-6000 TC Polyamide 12 (Nylon 12) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 25 kg sealed moisture-resistant bags, as thermoplastic pellets for processing. |
| Container Loading (20′ FCL) | One 20-foot FCL containing Avient Therma-Tech™ NJ-6000 TC Polyamide 12 (Nylon 12), securely packed and containerized for safe transport. |
| Shipping | Ship as non-hazardous polymer pellets in sealed moisture-barrier bags or fiber drums. Store cool, dry, and away from direct sunlight. Avoid exposure to humidity, as nylon 12 absorbs moisture. Use standard dry-freight containers, no special temperature control required. Handle with care to prevent bag damage and contamination. |
| Storage | Store Avient Therma-Tech™ NJ-6000 TC Polyamide 12 in a cool, dry area away from direct sunlight, heat sources, and moisture. Keep containers tightly sealed in original packaging to prevent water absorption, which can degrade performance. Avoid exposure to humidity and extreme temperatures; use within recommended shelf life to ensure optimal processing and properties. |
| Shelf Life | Store in sealed, dry, cool conditions away from moisture. Shelf life is typically 12 months from manufacture date. |
In prismatic and pouch battery module assembly, the busbar carrier functions as both a creepage-distance layer and a thermal bypass path between cell tabs and the liquid-cooled aluminium plate. Avient Therma-Tech™ NJ-6000 TC Polyamide 12 is processed as a ready-to-mould compound at 100 wt%; dilution with unfilled PA12 is avoided in this application because the thermally conductive filler network is dilution-sensitive and percolation collapse can reduce heat transfer efficiency before the compound loses its mechanical integrity. Published percolation data for this specific grade are limited, but any deviation from the supplied pellet form should be supported by through-plane thermal conductivity verification using ISO 22007-2 or ASTM E1461. Regrind is normally limited to 20 wt% of total shot weight; above this fraction, weld-line thermal resistance and insulation resistance may shift because regrind particles alter filler orientation during plasticisation. The moulding process requires desiccant pre-drying at 80°C for 4–6 h to reduce residual moisture below 0.10%. Melt temperature is held between 240°C and 270°C, with the mould heated to 80–100°C to develop adequate PA12 crystallinity. Screw speed is limited to 80–120 rpm on a general-purpose injection screw with an L/D ratio of 20:1–24:1 and a free-flow check ring suitable for filled materials; backpressure is maintained below 0.7 MPa to reduce filler fracture. Tooling should avoid sharp notches at ejector pin bosses, and minimum radii of 1.0 mm are specified for the carrier perimeter because thermally conductive filled PA12 exhibits lower tensile elongation than unfilled PA12. Moulded parts in this class include prismatic cell module endplates, laminated busbar carriers, cell isolation frames, and low-voltage sense-line holders that must provide electrical isolation while transferring heat to the liquid-cooled cold plate.
| Standard designation | Parameter assessed | Application-specific boundary |
|---|---|---|
| ISO 6469-1:2019 | Electric road vehicle safety | Module-level isolation with cell monitoring circuits |
| IEC 60695-11-10 | Flame propagation | Classification at final part wall thickness |
| IEC 60112 | Comparative tracking index | Creepage zone between busbar terminations |
| UL 746B | Long-term thermal ageing | Continuous use at hot-spot temperature |
| IEC 62631-3-2 | Surface resistivity | Isolation path between cell tab and cold plate |
In sealed outdoor LED luminaires, the polymer heat-sink shell must manage junction-temperature rise without forced airflow. NJ-6000 TC PA12 is used for passive heat-sink bodies where the heat path from the metal-core PCB to ambient must remain short; once polymer wall thickness exceeds 25 mm in the primary heat-flow direction, the thermal resistance of the shell dominates and the LED junction temperature approaches the upper limit defined by the package manufacturer’s LM-80 qualification. The melt-processing window is intentionally narrow: 245–265°C. At melt temperatures below 245°C, knit lines in fin roots show reduced weld strength when tested according to ISO 527-2:2012; above 265°C, surface blistering from residual moisture or additive decomposition becomes apparent on textured cavity surfaces. The mould temperature is maintained at 85°C, and ejection is delayed until the mean part temperature falls below 110°C to prevent post-ejection fin warpage. The compound is used neat as the structural heat-sink material; if an overmoulded silicone gasket is added, the PA12 is moulded first and the gasket second, with no dilution of the thermally conductive grade in the shell. Compliance for this converting sector is assessed under IEC 60598-1:2020, UL 1598, EN 62471, and RoHS 2011/65/EU Annex II. Downstream production typically uses servo-driven hydraulic injection moulding with valve-gated hot runners to reduce weld lines in the fin field. Finished components produced from this grade in this sector include streetlight heat-sink bodies, high-bay luminaire shells, floodlight driver compartments, and track-light thermal housings for retail display lighting.
Outdoor remote radio units and active antenna units combine a weather-protected polymer enclosure with an aluminium internal heat spreader. The polymer components in this assembly experience solar-driven surface temperatures above 85°C, ambient lows below -40°C, and prolonged humidity exposure during coastal deployment. PA12 absorbs approximately 0.7–1.0% moisture at 23°C/50% RH, compared with 2.5–3.0% for PA66, which reduces dimensional movement in antenna bracket locations. NJ-6000 TC PA12 is injection-moulded as a 100 wt% compound for heat-spreader brackets, RF filter covers, and baseband unit thermal shunts. The manufacturing method uses a valve-gated hot runner system with mould temperature of 80–90°C and melt temperature of 250–270°C; gas-assisted injection is not recommended because thick sections can develop filler-depleted core voids that reduce through-plane conductivity. The thermal validation sequence follows Telcordia GR-487-CORE for outdoor enclosure integrity, ETSI EN 300 019-1-4 for environmental class across climate cycles, IEC 60529 for IP ratings, and IEC 62368-1:2018 for electrical safety in information and communication equipment. Additional surface resistivity measurement is performed according to IEC 62631-3-2 because the filler package may reduce electrical insulation in configurations where the bracket contacts antenna feed lines. The final components in this application include remote radio unit heat-spreader brackets, active antenna backplane thermal shunts, RF cavity filter housings, and baseband unit card guides that require controlled thermal dissipation without anodised aluminium finish.
Underhood locations near exhaust aftertreatment or turbocharger housings expose polymer components to cyclic temperature spikes that can exceed 150°C. NJ-6000 TC PA12 is not specified for direct exhaust impingement or continuous operation above its UL-rated relative thermal index; rather, it is used in shielded zones where peak excursions may reach 150°C but continuous service remains below the UL 746B RTI value established for the final wall thickness. In these locations, the compound is processed neat with regrind limited to 20 wt%; regrind above this threshold is not permitted without repeating thermal shock validation because repeated moulding shifts filler orientation and can depress impact strength. Moulding is performed at 250–270°C melt temperature and 80–100°C mould temperature. Shot volume should occupy 40–80% of barrel capacity to limit residence time; extended residence at high melt temperature promotes PA12 chain scission and surface roughness in filled systems. The process is validated against ISO 16750-4 and SAE J1455 for environmental loads, with tensile property retention measured using ISO 527-2:2012 and ASTM D638-14. Chemical resistance of the PA12 matrix to engine oil, diesel, and urea solution is evaluated according to ASTM D543 under representative underhood fluid exposure. Terminal parts include ECU housings, transmission control unit enclosures, park-assist sensor housings, diesel exhaust fluid dosing module brackets, and charge-air cooler sensor bodies that require heat dissipation with reduced moisture sensitivity.
In high-density handheld devices such as portable power stations and wireless charging docks, the polymer enclosure serves as the sink-to-air interface between internal heat sources and the user environment. NJ-6000 TC PA12 is moulded in thin-wall sections from 0.8 mm to 2.0 mm, using high-speed injection to avoid premature freeze-off at the gate. The mould temperature is held at 80°C, and the material is processed without dilution; the addition ratio is 100 wt% ready-to-mould compound because thin-wall parts tolerate little loss of thermal pathway continuity. The downstream production route uses electric injection moulding machines with high-injection-pressure capability, typically above 180 MPa for long flow paths, and diaphragm-gate geometry to reduce jetting. Compliance for the sector is evaluated under IEC 62368-1:2018, UL 94 at final wall thickness, RoHS 2011/65/EU Annex II, and REACH Regulation (EC) No 1907/2006 Article 33. A flame rating is not inherent to every thermally conductive PA12 formulation, so the compound must be tested at the thinnest production wall section rather than transferred from thicker plaque data. Surface finish on visible consumer surfaces is controlled by mold temperature uniformity and venting; poor venting at the end of fill can produce burn marks on textured surfaces. Production articles include portable docking station shells, camera gimbal motor housings, power bank heat-spreader frames, and handheld thermal camera enclosures where polycarbonate alternatives may fail low-temperature impact requirements.
In diagnostic laboratory instruments, internal solenoids and reagent-block heaters generate localised heat loads that must be dissipated without introducing metal brackets that corrode in saline or bleach cleaning solutions. NJ-6000 TC PA12 is moulded for these heat-spreader brackets because the polyamide backbone resists stress cracking in dilute hypochlorite cleaning agents better than many PC/ABS blends, provided chemical exposure is validated per ASTM D543. The processing sequence begins with desiccant drying at 80°C for 4 h to below 0.10% moisture. Melt temperature is restricted to 245–265°C because laboratory equipment components often combine thin bosses with thicker mounting features; overheating produces sink marks and surface degradation at sharp transitions. Mould temperature is set at 85°C, and hold pressure is profiled to minimise post-mould dimensional drift in ambient humidity. The material is used neat; no regrind is introduced in cleanroom or validated production runs unless revalidation is completed according to the instrument manufacturer’s change-control procedure. Electrical safety compliance is assessed under IEC 61010-1:2010/AMD1:2016 and IEC 61010-2-101 for in vitro diagnostic equipment, with material documentation aligned to RoHS 2011/65/EU and REACH. Final components include hematology analyzer heat-sink brackets, immunoassay incubator block covers, ultrasonic homogenizer motor housings, and thermal manifold support plates that must maintain dimensional stability in temperature-cycled enclosures.
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Avient Therma-Tech™ NJ-6000 TC Polyamide 12 (Nylon 12) is a thermally conductive, electrically insulating engineering thermoplastic formulated for injection-molded heat-transfer components. The grade combines a polyamide 12 matrix with a mineral-based thermally conductive filler system. Representative supplied-material values include density of 1.60 g/cm³–1.70 g/cm³ by ISO 1183-1:2019, through-plane thermal conductivity of 4.0 W/m·K–6.0 W/m·K by ISO 22007-2:2022 on 2.0 mm plaques, and surface resistivity above 1.0 × 10¹² Ω by ASTM D257-14. Tensile strength is typically 35 MPa–45 MPa according to ISO 527-2:2012, and flexural modulus is typically 3,500 MPa–5,000 MPa according to ISO 178:2019. Lot-specific certificates of analysis govern production release; where a characteristic is not published for this exact formulation, published data for this specific configuration is limited.
The polyamide 12 backbone provides lower saturated water absorption than polyamide 6 or polyamide 66, which is relevant in humid enclosures and under thermal cycling. Dry-as-molded heat deflection temperature at 0.45 MPa by ISO 75-2:2013 is generally above 150°C, while at 1.80 MPa the value is lower and more sensitive to moisture conditioning. Filler loading reduces elongation at break compared with unfilled PA12 and raises melt viscosity, so snap-fit features, ultrasonic-welded joints, and threaded bosses require more conservative design than unfilled nylon 12 components.
Unfilled PA12 typically exhibits thermal conductivity of 0.21 W/m·K–0.23 W/m·K and is not used for heat-dissipation parts. The thermally conductive filler system raises through-plane conductivity by more than an order of magnitude, but the flow-induced orientation of platelet fillers can create anisotropy. In-plane conductivity may be 1.5–2.0 times higher than through-plane conductivity in edge-gated plaques, which affects the relationship between material datasheet values and molded part performance. When the thermal path is dominated by the part wall and the heat source is localized, the through-plane value controls hotspot temperature; when heat spreads along a fin or base, the in-plane value is equally significant.
| Property | Therma-Tech™ NJ-6000 TC PA12 | Unfilled PA12 | Aluminium ADC12 |
|---|---|---|---|
| Density by ISO 1183-1:2019 | 1.60–1.70 g/cm³ | 1.01 g/cm³ | 2.70 g/cm³ |
| Through-plane thermal conductivity by ISO 22007-2:2022 | 4.0–6.0 W/m·K | 0.21–0.23 W/m·K | 96–120 W/m·K |
| Tensile strength by ISO 527-2:2012 | 35–45 MPa | 40–50 MPa | 230–310 MPa |
| Flexural modulus by ISO 178:2019 | 3,500–5,000 MPa | 1,000–1,400 MPa | 70,000 MPa |
| Surface resistivity by ASTM D257-14 | 1.0 × 10¹²–1.0 × 10¹⁴ Ω | 1.0 × 10¹³–1.0 × 10¹⁵ Ω | Electrically conductive |
Compared with thermally conductive polyamide 6 grades, this PA12 compound shows lower equilibrium moisture gain because of the lower amide-to-methylene ratio. That improves retention of dielectric properties and dimensional stability in humid environments but may reduce load-bearing capability at elevated temperature. Compared with aluminium ADC12, the compound is roughly 40% lower in density and can be molded into complex fin geometry without secondary machining, but its thermal conductivity is 20–30 times lower. Aluminium remains preferable for concentrated heat sources above approximately 20 W/cm²; the polymer is more suitable for distributed heat sources and for housings requiring electrical isolation or corrosion resistance.
On production injection presses, the compound is typically dried in a desiccant-bed dryer at 80°C for 4 h–6 h with a dew point no higher than -30°C. Target pellet moisture is 0.10 wt% or lower. Inadequate drying produces splay, gate blush, and hydrolytic degradation at melt temperatures above 250°C. Melt temperature is normally held between 240°C and 270°C. Below 235°C, the high filler content increases viscosity and can produce short shots in thin fin sections. Above 280°C, visible yellowing, surface exudate, and mechanical embrittlement occur. Mold temperature is normally controlled between 50°C and 80°C; 60°C is common for flat LED heat-sink bases because it improves crystallinity and reduces residual stress. Pack pressure of 50 MPa–80 MPa and hold time long enough to freeze the gate are required. Back pressure should remain below 1.0 MPa to minimize platelet orientation gradients. A 40 mm, 20:1 L/D screw with a positive check ring is typical for medium-sized parts; the metering zone should be hardened because the thermally conductive filler is abrasive. In sustained runs, screw and barrel wear has been observed after several thousand hours, so nitrided steel or bimetallic barrel cladding is specified.
At 260°C and an apparent shear rate of 1,000 s⁻¹, filled thermally conductive PA12 compounds in this class often show apparent melt viscosities between 80 Pa·s and 150 Pa·s. This is higher than unfilled PA12 and requires sufficient injection pressure capacity. Thin-wall molding below 1.5 mm nominal wall thickness is possible only with fast injection, elevated mold temperature, and adequate venting. If the mold temperature drops below 50°C, rapid skin solidification reduces flow length and can create flow hesitation lines in rib roots; raising mold temperature from 40°C to 60°C has been reported to eliminate short shots in 2 mm fin roots. Published data for this specific configuration is limited, and tool trials remain necessary.
Thick sections increase the conduction path and raise the risk of internal voids because the high-viscosity filled melt cannot compensate for volumetric shrinkage. If a housing base is thickened to 8 mm or more in an attempt to improve heat spreading, the effective thermal conductivity measured on the molded part may fall below the datasheet value because porosity and filler orientation gradients disrupt phonon transport. Core deflection and long cooling times also reduce dimensional accuracy. Better thermal performance is achieved with a 2.5 mm–4.0 mm base, adequate fin count, and a metal insert or heat pipe when hotspot flux requires additional spreading.
LED retrofit housings use the compound to replace aluminium in heat sinks below about 12 W total input power. For a 3 mm wall with thermal conductivity 5.0 W/m·K, the conduction resistance is approximately 0.0006 K·m²/W. Natural convection at 10 W/m²·K yields a convective resistance near 0.1 K·m²/W, so the external convection boundary layer, not the polymer wall, dominates the thermal path. Junction-temperature improvement compared with unfilled PA12 is therefore significant, whereas the difference compared with aluminium is not linearly proportional to the conductivity ratio. Effective design uses short conduction paths, large heat-source contact area, and adequate venting. If heat-source flux exceeds approximately 15 W/cm², localized hotspot temperature rises sharply and the polymer may become unsuitable without a metallic insert or forced-air cooling.
Battery module isolation frames and liquid-cooling interface plates use this material when electrical isolation must be maintained between cell tabs, bus bars, and a metallic cold plate. The PA12 grade provides better dimensional stability than PA6 in humid battery enclosures because of lower moisture uptake. Applications with glycol-water coolant above 70°C require long-term hydrolytic stability testing; published data for this specific configuration is limited. The compound is not a substitute for creepage and clearance distance requirements under IEC 60664-1, and the design must maintain minimum through-thickness insulation for the working voltage.
In threaded bosses and snap-fit arms, the notch sensitivity of thermally conductive PA12 is higher than unfilled PA12. Notched Charpy impact by ISO 179-1:2010 is often below 3 kJ/m² at 23°C, while unreinforced PA12 can exceed 10 kJ/m². Snap-fit features should be designed with generous radii, low strain, and no sharp core corners. Threaded inserts should be installed with thermal or ultrasonic insertion after molding, not cold-pressed, to reduce local cracking. Adhesive bonding with two-part epoxy or polyurethane is possible after surface treatment; the low surface energy of PA12 typically requires plasma or corona treatment to raise bond strength above 5 MPa.
The coefficient of linear thermal expansion in flow direction is generally 60 × 10⁻⁶ K⁻¹–90 × 10⁻⁶ K⁻¹, while transverse direction can be 20%–40% higher because of filler orientation. This anisotropy leads to warpage in flat heat-sink bases and battery cold-plate frames if gate placement is unbalanced. Mold-filling analysis should use measured orientation-dependent shrinkage data rather than isotropic values.
Regulatory documentation for Avient Therma-Tech™ NJ-6000 TC Polyamide 12 generally covers the product as supplied. Because the thermal filler system may include naturally occurring mineral particles, trace metal content can vary by lot. The following matrix is typical for supplied-material declarations:
| Standard or regulation | Condition or property |
|---|---|
| UL 94 | HB at 1.5 mm |
| ISO 527-2:2012 | Tensile properties, 5 mm/min test speed |
| ISO 178:2019 | Flexural properties, 2 mm/min crosshead speed |
| ISO 75-2:2013 | Heat deflection temperature at 1.80 MPa and 0.45 MPa |
| ISO 22007-2:2022 | Thermal conductivity by transient plane source |
| ASTM D257-14 | Surface and volume resistivity |
| RoHS Directive 2011/65/EU Annex II, amended by (EU) 2015/863 | Pb, Hg, Cd, Cr(VI), PBB, PBDE, DEHP, BBP, DBP, DIBP |
| REACH SVHC | Declaration per current candidate list |
The grade is sensitive to strong acidic media, concentrated oxidizing acids, and hot aqueous calcium chloride solutions, which can degrade the PA12 matrix. Continuous exposure to water above 80°C can hydrolyze the polyamide backbone and reduce molecular weight. Flame-retardant additives, if required, must be selected to avoid interactions with copper-based inserts at elevated temperature because brominated packages can produce corrosive species under thermal aging; the manufacturer recommends application-specific testing. Regrind use should be limited to 25 wt% or less to control filler fracture and property drift. Repeated regrind cycles increase melt viscosity variation and lower impact strength.
Thermal oxidative aging limits long-term use. In circulating air at 120°C, tensile strength retention above 50% is possible for 1,000 h only if the antioxidant package is suitable; at 150°C, embrittlement can occur within 500 h–1,000 h depending on wall thickness and antioxidant loading. For electrical insulators, the relative thermal index should be verified from the current UL yellow card, as the thermal conductivity datasheet value is not a continuous-use temperature rating.
