| HS Code | 191378 |
| Density | 1.04 g/cm³ |
| Water Absorption | 1.0 % |
| Tensile Modulus | 400 MPa |
| Tensile Strength | 35 MPa |
| Elongation At Break | 200 % |
| Flexural Modulus | 450 MPa |
| Notched Charpy Impact 23 C | No break |
| Heat Deflection Temperature 1 8 Mpa | 50 °C |
| Vicat Softening Temperature B50 | 135 °C |
| Melting Temperature | 172 °C |
| Shore D Hardness | 65 |
| Volume Resistivity | 1×10^14 Ω·cm |
As an accredited Arkema Rilsamid AESN BLACK P202 T6L PA12-I factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 25 kg net in moisture-proof, polyethylene-lined paper bags, palletized and stretch-wrapped for safe handling and storage. |
| Container Loading (20′ FCL) | 20′ FCL: Arkema Rilsamid AESN BLACK P202 T6L PA12-I (PA12 granules) packed in sealed bags on pallets, ready for safe transport. |
| Shipping | This PA12 grade ships as granules in sealed, moisture-proof bags to prevent water absorption. It is not classified as dangerous goods under standard transport regulations, so standard dry containers, trucks, or palletized freight are suitable. Keep dry, ventilate, avoid dust accumulation, and store away from heat or ignition sources. |
| Storage | Store Arkema Rilsamid AESN BLACK P202 T6L PA12-I in its original, unopened packaging in a cool, dry, well-ventilated area. Keep away from direct sunlight, heat sources, and moisture to prevent degradation. Maintain ambient temperatures and avoid stacking excessively. Reseal partially used containers tightly to limit water absorption. Shelf life is optimal when stored under these conditions. |
| Shelf Life | Rilsamid AESN Black P202 T6L PA12-I has a shelf life of 2 years when stored dry, sealed, and in original conditions. |
Rilsamid AESN BLACK P202 T6L PA12-I is classified as a heat-stabilized impact-modified polyamide 12. The downstream conversion path is governed by the material’s relatively low moisture uptake compared with PA6 and PA66, its crystallization rate, and its narrow thermal degradation window. Published grade-specific multi-point data for this exact black T6L formulation are limited; therefore the processing boundaries stated below are derived from PA12-I platform behavior and must be confirmed against the supplier technical data sheet, black-color-specific data, and customer release documentation before production qualification.
Automotive fuel tank vent lines, vapor purge connectors, and diesel return lines produced from PA12-I are subjected to combined hot polar fuel, road salt, and pressure pulsation. The dominant stress state is hoop stress at swaged quick-connect terminations, where the barb root acts as an environmental stress cracking initiation point if frozen-in orientation is not relieved. For this black heat-stabilized grade, predrying to below 0.08% residual moisture as determined by ISO 15512 is the first process constraint. Feed throat and hopper systems must maintain a dry-air dew point below -40°C; rehydration occurs within 30 min to 45 min in an uncontrolled ambient atmosphere. On a single-screw extruder with an L/D ratio of 30:1 and a compression ratio of 3:1, the barrel profile is typically set from 210°C to 240°C across the feed-to-metering zones, with die-head pressure held below 150 bar. Melt temperature measured at the die entry should remain between 230°C and 245°C; sustained operation above 260°C causes progressive melt-pressure drop from chain scission and requires an immediate purge. Vacuum sizing at -0.2 bar to -0.6 bar and water bath temperatures between 20°C and 40°C are used to hold ovality below 0.1 mm on 8 mm outside diameter tubing. Post-extrusion annealing at 120°C for 30 min in air or water reduces frozen-in orientation and lowers the probability of zinc chloride stress cracking during SAE J2260 qualification. The converter must not assume that a single-layer PA12-I fuel line meets all evaporative emission limits under LEV III or Euro 6d; permeation and cyclic pressure endurance must be revalidated on the exact multilayer structure and assembly configuration.
Air brake tubing operates at continuous working pressures near 9 bar and transient pulses up to 16 bar, with simultaneous exposure to sodium chloride, diesel mist, and zinc chloride road salt solutions. SAE J844 specifies dimensional tolerance, burst strength, cold impact resistance, and zinc chloride stress-cracking resistance. PA12-I maintains lower equilibrium moisture absorption than PA6 or PA66, which directly stabilizes ID and OD after humidity cycling. The critical production control in this application is melt temperature drift; on a 30:1 L/D single-screw extrusion line, a deviation exceeding ±3°C at the die produces measurable OD fluctuation and increases the scrap rate in continuous laser inspection. Screw speed variation above 5 min⁻¹ without a melt pump can create pressure surges that manifest as periodic weld-line weakness in the tube wall. A screen pack of 100/80/100 µm or finer is used to remove carbon black agglomerates that would otherwise nucleate microvoids. Vacuum sizing at -0.3 bar to -0.5 bar controls OD, and a laser micrometer samples at 2 Hz with rejection limits of ±0.10 mm. After extrusion, conditioning for 24 h at 23°C and 50% RH according to ISO 291 is required before tensile, burst, and low-temperature impact testing. Low-temperature impact is assessed at -40°C; weld-line fracture is the principal rejection mode when melt temperature is too low or screw surging occurs. Residual moisture above 0.12% before extrusion generates surface bubbles and a measurable drop in burst strength. The carrier resin of any black masterbatch must be PA12-based; an incompatible carrier can reduce impact strength at the carbon black interface and cause premature crack initiation during cold impact testing.
Flexible corrugated conduit for automotive door harnesses and industrial cable carriers is produced from PA12-I by oscillating corrugators. Abrasion resistance is evaluated under ISO 6722-1, while cyclic flex endurance is measured on a two-axis flex bench with a mandrel radius of 75 mm or the customer-defined minimum bend radius. Corrugator block temperature is maintained between 40°C and 60°C; lower block temperatures cause stress whitening at corrugation roots because the PA12 matrix crystallizes too rapidly under imposed strain. Wall thickness at the corrugation root must remain above 0.50 mm, and slit opening force is monitored as an indirect indicator of crystallinity and internal lubricant distribution. Published data for this exact black PA12-I in high-cycle cable carrier service are limited; qualification must therefore include the customer’s door slam, torsion, and flex cycle profile rather than relying only on material datasheet values.
| Application segment | Primary standard | Critical test or parameter | Process control link |
|---|---|---|---|
| Automotive fuel and vapor line | SAE J2260, ISO 16750-5 | Burst, permeation, zinc chloride stress cracking | Drying below 0.08%; annealing at 120°C for 30 min |
| Air brake tubing | SAE J844 | Cold impact at -40°C, burst, dimensional stability | Melt temperature drift limited to ±3°C |
| Automotive cable conduit | ISO 6722-1 | Abrasion and cyclic flex endurance | Corrugator block temperature 40-60°C |
| Pneumatic push-in fitting | ISO 14743, ISO 228-1 | Thread retention, cold impact, ID stability | Conditioning at 50% RH before gaging |
| Offshore flexible pipe pressure sheath | API 17J, ISO 13628-2 | Rapid gas decompression, hydrolysis aging | Drying below 0.06%; melt temperature below 245°C |
| Battery thermal management line | ISO 16750-5 | Glycol aging, fitting retention | ID measurement after 1,000 h fluid immersion |
Push-in fittings for industrial pneumatic circuits are injection molded in multi-cavity hot-runner tools with shut-off nozzles. The shift from PA11 to PA12-I is usually driven by melt processability or supply chain economics, but it requires revalidation of cold impact, thread strength, and post-molding dimensional stability. ISO 14743 governs the general requirements for pneumatic quick-action couplings, and ISO 228-1 governs threaded port geometry. The molding window uses melt temperatures from 235°C to 255°C, mold temperatures from 40°C to 80°C, injection speeds through the thin grasping collet between 100 mm/s and 200 mm/s, and holding pressure between 400 bar and 800 bar. The principal molding defect is jetting inside the collet; a valve gate with a diameter of 1.2 mm and a melt buffer of 5 mm to 10 mm suppresses the defect without excessive shear. Moisture conditioning at 50% RH shifts mean fitting ID by approximately 0.15%; Go/No-Go thread gaging should therefore be performed after 24 h conditioning, not immediately after demolding. For outdoor or transport use, the customer may require impact at -40°C; notched Charpy values must then be obtained on the exact black compound according to ISO 179-1eA. Cavity-specific weld-line data are mandatory because weld lines in black impact-modified PA12 fittings can reduce impact resistance significantly relative to un-welded test bars. No generic datasheet number substitutes for multi-cavity weld-line qualification under the intended installation torque.
Unbonded flexible pipes for offshore oil and gas use a PA12 or PA11 pressure sheath extruded as a continuous cylindrical barrier over a steel carcass. API 17J and ISO 13628-2 govern design, material qualification, and testing, including rapid gas decompression, hydrolysis aging, and pressure containment. The critical failure mode is explosive blistering when dissolved gas expands faster than it can diffuse from the polymer. RGD testing is performed on the exact sheath thickness at the project design temperature and gas composition; a generic material datasheet is not sufficient. The extrusion process for pressure sheaths requires melt temperature control between 230°C and 245°C. Long residence time above 260°C increases the low-molecular-weight fraction and reduces RGD resistance. Drying must reach below 0.06% residual moisture for large-diameter extrusion, using a gravimetric dryer with a dry-air dew point below -50°C and off-line Karl Fischer verification according to ISO 15512. Hydrolysis stability is service-dependent; typical design limits for PA12 in produced water at atmospheric pressure remain below 70°C, and higher-temperature projects require specific aging data with methanol and carbon dioxide content. This specific black PA12-I extrusion grade may not have a public API 17J qualification. Published data for this exact formulation in flexible pipe service are limited, so the converter and project owner must require a grade-specific qualification program before considering it for pressure sheath production.
Battery thermal management lines in heavy electric vehicles circulate water-glycol at bulk temperatures between 60°C and 80°C. Some systems use PA12 because its low moisture absorption and hydrolysis resistance reduce the dimensional instability seen with aliphatic nylons. The extrusion process follows the same predrying limit of 0.08% residual moisture and melt temperature range of 230°C to 245°C. Connector retention is the dominant failure risk, not pipe burst. ID enlargement after 1,000 h immersion in 50/50 water-glycol at 90°C according to ISO 16750-5 or the project-specific schedule must be measured before release. Published test data for this specific black grade in battery coolant service are limited; the assembly supplier should require a fluid-specific tensile retention curve and connector pull-force data from the exact PA12-I compound rather than relying on automotive fuel line documentation.
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Arkema Rilsamid AESN BLACK P202 T6L is a black, impact-modified polyamide 12 injection-moulding and extrusion compound classified as PA12-I under ISO 1874-1. The grade is supplied as a pre-compounded, carbon-black-pigmented resin with the heat and light stabilization package identified by the T6L suffix. Manufacturer technical bulletins report a density of 1.02–1.03 g/cm³ under ISO 1183-1 and a melt volume-flow rate of 8–14 cm³/10 min at 235 °C and 2.16 kg under ISO 1133-1. The material is intended for semi-flexible technical parts in which low-temperature ductility, resistance to chloride-induced stress cracking, and dimensional stability after moisture uptake are design requirements.
Table 1 consolidates representative property windows obtained with dry-as-moulded specimens. The values are not batch-release limits and should be verified against the current manufacturer certificate for the specific lot.
| Property | Value | Unit | Test method |
|---|---|---|---|
| Density | 1.02–1.03 | g/cm³ | ISO 1183-1 |
| Moulding shrinkage, flow direction | 1.0–1.3 | % | ISO 294-4 |
| Water absorption, saturation at 23 °C | 1.0–1.2 | % | ISO 62 |
| Tensile modulus | 0.8–0.9 | GPa | ISO 527-1/-2 |
| Tensile stress at yield | 32–36 | MPa | ISO 527-1/-2 |
| Nominal strain at break | >50 | % | ISO 527-1/-2 |
| Charpy notched impact strength, 23 °C | 10–16 | kJ/m² | ISO 179/1eA |
| Charpy notched impact strength, -40 °C | 4–7 | kJ/m² | ISO 179/1eA |
| Melting temperature, 10 °C/min | 171–174 | °C | ISO 11357-1/-3 |
| Vicat softening temperature, A50 | 137–141 | °C | ISO 306 |
| Melt volume-flow rate, 235 °C / 2.16 kg | 8–14 | cm³/10 min | ISO 1133-1 |
| Shore D hardness | 60–65 | Shore D | ISO 868 |
Before melt processing, a residual moisture target below 0.10 % is used because higher moisture levels reduce melt viscosity and can generate surface splay in thick sections. Post-mould shrinkage in the flow direction is typically 1.0–1.3 %, while saturated water uptake at 23 °C is 1.0–1.2 %; both values influence the clearance design of snap-fit assemblies.
In comparison with unplasticized PA12 grades, the impact-modified architecture of Rilsamid AESN BLACK P202 T6L reduces tensile modulus from the 1.3–1.6 GPa range to 0.8–0.9 GPa and raises low-temperature notched impact. Unmodified PA12 typically exhibits a notched Charpy impact at -40 °C of 3–5 kJ/m² under ISO 179/1eA; the modified grade is reported at 4–7 kJ/m² under the same method. The ductility shift is obtained without adopting PA6’s high moisture absorption. Saturated water uptake of PA6 is 9.0–10.0 % under ISO 62, while PA12 of this family absorbs 1.0–1.2 %. Consequently, humid service environments produce a smaller modulus loss and less dimensional change than with PA6 parts.
The semicrystalline melting peak of the product is 171–174 °C, which is below the 175–179 °C typical for unplasticized PA12 and below the 220–225 °C melting range of PA6. The lower melt temperature reduces the thermal load on insert materials and permits shorter cooling time in heavy sections. Compared with PA11, the product occupies a lower-modulus semi-flexible position and offers similar long-chain polyamide resistance to chloride salts, but the specific mechanical values of the P202 T6L grade must be used for snap-fit calculations because PA11 grades vary widely in plasticizer content.
For designers of automotive cable ties and clip retainers, the tensile strain at break above 50 % under ISO 527-1/-2 is a better indicator of installation robustness than flexural modulus; brittle unplasticized PA12 grades can pass flexural strength tests yet fail corner-loading when moulded-in stress is present. The present grade reduces that failure mode by allowing larger local deformation before crack initiation.
On a 25–40 mm three-zone reciprocating screw with an L/D of 20–25 and a compression ratio of 2.0–2.5, the compound is processed with a barrel temperature profile of 220–250 °C and a nozzle setting of 235–245 °C. Desiccant drying at 80 °C for 4–6 h with a dew point lower than -30 °C is required to reach the residual moisture target of <0.10 %. Humid plant conditions above 50 % RH justify closed-loop desiccant hoppers rather than tray dryers because the grade re-absorbs atmospheric moisture during conveying.
Mould temperature is held at 40–60 °C. The lower setting is used for thin-wall parts below 1.5 mm where rapid skin solidification assists ejection; the upper setting is preferred for clip features requiring maximum elongation and low-temperature impact, as higher mould temperature promotes spherulitic development without creating excessive post-mould shrinkage. Peak hydraulic injection pressure is typically 600–1,100 bar, depending on flow length and wall thickness, with hold pressure maintained at 50–70 % of peak injection pressure. Screw speed is controlled between 60 rpm and 120 rpm, and back pressure is limited to 5–10 bar to avoid excessive shear heating of the plasticized matrix.
Processors should limit barrel residence time above 260 °C to less than 10 min. Longer exposure depletes the stabilizer package and can produce a measurable drop in elongation at break and yellowing of the black compound. Hot-runner manifolds are set at 235–245 °C; dead spots in hot-runner channels are a documented failure mode because the lower thermal conductivity of unfilled PA12 relative to polyamide 6 delays heat transfer into stagnant melt zones. Shot-to-shot consistency on multicavity tools is maintained by ensuring 20–25 % of the barrel capacity is used as cushion and by limiting regrind addition to 20–30 % dried, dust-free material.
In automotive clip and fastener applications, the retained notched Charpy impact at -40 °C of 4–7 kJ/m² under ISO 179/1eA supports snap-fit insertion without pre-heating in cold assembly plants. The tensile modulus of 0.8–0.9 GPa permits a thinner flexural beam to generate the same insertion force as a thicker unplasticized PA12 component, reducing part mass in high-volume vehicle wiring harness and fuel-line clip systems. The product is used for pneumatic tubing connectors, cable ties, and exterior clips where zinc chloride road-salt resistance is required. PA12 has lower sensitivity to chloride-induced stress cracking than PA6 in these applications; validation under ASTM D543 or ISO 175 using service-representative fluids is required for final part approval because plasticizer migration may shift dimensions if the part is continuously immersed in fuel fractions at temperatures above 40 °C.
Published data for the continuous-use temperature index of the specific T6L stabilizer package in the black P202 configuration are limited. For engine-bay clips exposed to short-term excursions above 100 °C, the user should validate tensile strength and elongation retention after heat ageing, for example by ISO 527-1/-2 tests after 1,000 h at the intended peak temperature. The semicrystalline PA12 matrix provides a lower coefficient of friction than many glass-reinforced polyamides in dry snap-fit movement, but tabulated tribological data for this exact grade are not publicly available; insertion force should be confirmed on prototype tooling.
For fluid-contact components adjacent to fuel-vapour lines, the grade’s low moisture uptake and chloride resistance are relevant, but the product is not a substitute for barrier-layer resins in multilayer fuel line construction. Where the component is in continuous contact with automotive fuel formulations, the supplier should be asked for specific fuel-resistance data because published data for this configuration are limited.
When European Union substance restrictions are evaluated, the supplier’s standard documentation typically indicates that the grade is not formulated with lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers above the threshold limits of RoHS 2011/65/EU Annex II. Because the product is black, the carbon-black pigment package must be confirmed against REACH Article 33 substance-of-very-high-concern reporting obligations above 0.1 % w/w, particularly if high-temperature pyrolysis of the black masterbatch is a concern during extrusion. The grade is not automatically approved for direct food-contact use under EU 10/2011; overall migration and specific migration testing must be performed on the finished article at the intended surface-to-volume ratio and time-temperature conditions.
Chemical resistance limitations include strong mineral acids, phenols, cresols, formic acid, and concentrated oxidizing media. The product should not be combined with amine-based flame-retardant additives that can alter the impact-modifier morphology and create premature embrittlement at low temperature. Processors blending dried regrind with virgin resin should verify the regrind fraction does not exceed 30 % in snap-fit applications because dilution of the impact-modified phase can reduce notched Charpy impact at -40 °C below the design minimum of 4 kJ/m².
| Regulation / standard | Relevant parameter | Typical status / action |
|---|---|---|
| REACH 1907/2006 Article 33 | SVHC above 0.1 % w/w | Certificate of compliance required from supplier |
| RoHS 2011/65/EU Annex II | Pb, Hg, Cd, Cr(VI), PBB, PBDE | Not intentionally added above threshold |
| EU 10/2011 | Overall migration | Finished-article testing required; not automatic approval |
| ISO 1043-1 | Material designation | PA12-I |
The compound is not recommended for components exposed to hot aqueous glycol mixtures above 120 °C because the combined hydrolytic and thermal environment can reduce molecular weight and tensile elongation. For continuous use at such temperatures, a high-temperature polyamide such as PA46 or a PPA grade should be considered. Published data for this specific black P202 T6L configuration under those conditions are limited.
