| HS Code | 526705 |
| Density | 1.01 g/cm³ |
| Melt Volume Flow Rate Mvr 275 C 5 Kg | 12 cm³/10 min |
| Melting Temperature Dsc 10 C Min | 178 °C |
| Vicat Softening Temperature Vst B50 | 130 °C |
| Heat Deflection Temperature Hdt B | 90 °C |
| Tensile Modulus Conditioned 1 Mm Min | 1200 MPa |
| Tensile Stress At Yield Conditioned 50 Mm Min | 38 MPa |
| Tensile Strain At Yield Conditioned 50 Mm Min | 8 % |
| Nominal Tensile Strain At Break Conditioned 50 Mm Min | >50 % |
| Charpy Impact Strength Conditioned 23 C | No break |
| Charpy Notched Impact Strength Conditioned 23 C | 55 kJ/m² |
| Water Absorption Equilibrium 23 C 50 Rh | 0.7 % |
As an accredited Aurora Kunststoffe AUROmid PA12 TR55 black 9005 PA12, Conditioned factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 25 kg sealed bag of Aurora AUROmid PA12 TR55 black 9005 granules, conditioned, with labeled product identification and traceability. |
| Container Loading (20′ FCL) | One 20′ FCL container, conditioned PA12 granules packed on heat-sealed, moisture-proof pallets, secured and shrink-wrapped for safe transport. |
| Shipping | Aurora Kunststoffe AUROmid PA12 TR55 black 9005 is a conditioned polyamide 12 thermoplastic. Ship in sealed, moisture-proof packaging to prevent humidity absorption. Protect from extreme heat and direct sunlight. Not classified as hazardous, but avoid dust inhalation. Store in a cool, dry area, and handle with standard industrial care. |
| Storage | Store in original sealed packaging in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep the container tightly closed to prevent moisture absorption, which can affect PA12 properties. Avoid exposure to humidity, dust, and incompatible materials. Maintain ambient temperature and ensure good shelf-life management. |
| Shelf Life | Shelf life: 2 years when stored sealed, dry, and protected from UV/heat; re-condition before use after opening. |
Automotive evaporative emission fuel vapor lines represent a downstream conversion route in which AUROmid PA12 TR55 black 9005 is selected for low fuel permeation, zinc chloride stress-crack resistance, and low-temperature impact behaviour. The conditioned grade is used at 100 parts in monolayer tube extrusion; edge trim from start-up and gauge transitions is re-fed at up to 15 phr after drying and melt filtration through 80–120 µm screen packs. No external carbon black masterbatch is required because the 9005 black is already integrated into the pellet. Compliance for the converted tube and connector system is assessed against SAE J2260 for nonmetallic fuel system tubing, DIN 73378 for polyamide tubing in road vehicles, and SAE J2044 for quick-connect interfaces. Extrusion is carried out on a single-screw extruder with 25–30 L/D barrier screw, feed-to-die temperatures of 220/235/245 °C, adapter held at 245 °C, and die head at 240 °C. The tube enters a vacuum calibration tank at 15–18 °C and passes through a closed-loop ultrasonic gauge where ovality is held below 0.08 mm for outside diameters of 6–10 mm and wall thicknesses of 1.0–1.25 mm. When the compound is injection molded into fuel connectors, clamp force of 500–900 kN, melt temperature 240–250 °C, mold temperature 60–80 °C, and holding pressure 40–60 MPa are used to reduce jetting and weld-line cracking at the latch feature. Terminal product types include fuel vapor return lines, evaporative canister purge lines, tank vent lines, and quick connectors. The principal processing boundary is moisture: if storage exceeds 60% relative humidity, the pellets are pre-dried at 80 °C for 4–8 h to a residual moisture content of ≤0.10% before extrusion. In continuous exposure to fuel containing more than 85% ethanol, published data for this specific conditioned TR55 configuration is limited, and qualification under SAE J2260 is required before design release.
Heavy-duty air brake tubing imposes an asymmetric data requirement because the primary field failure mode is not tensile yield at 25 °C but fitting blow-off and low-temperature burst after moisture absorption, road vibration, and repeated pressure cycling. In this segment AUROmid PA12 TR55 black 9005 is processed at 100 parts, with a hydrolysis-resistant copper halide stabilizer masterbatch added at 2.0–3.0 wt% only when the tube is specified for continuous operating temperatures above 100 °C. If the target is SAE J844 temperature classes up to 100 °C, the base grade is used without an additional stabilizer package. The converted product is qualified against SAE J844, ISO 7628, and DIN 73378, with burst pressure checked at no less than 4 times the rated working pressure at 25 °C and at −40 °C after conditioning. Extrusion of coiled air assemblies uses a single-screw extruder with 30 L/D mixing screw, melt temperature 235–250 °C, die head 240 °C, and a closed-loop air gauge that maintains outside diameter at ±0.05 mm. The tube is quenched in a two-stage water bath at 18–22 °C, dried, and annealed in-line at 120–130 °C for 15–20 min to reduce extrusion-induced orientation that otherwise contributes to coil spring-back and fitting leak. Ovality is held below 0.05 mm because push-fit connectors used on coiled trailer lines depend on circular recovery; a wall thickness variation above 0.1 mm across the circumference produces uneven compression set at the fitting barb and can initiate pressure loss below the 4x burst safety factor. Terminal parts include straight air brake tube, pre-cut labelled trailer lines, colored coil assemblies, and suspension ride-height tubing. The operational boundary is that unprotected sections routed through the engine compartment should not exceed continuous surface temperatures of 110 °C unless heat shielding is installed, and the tube is not validated for direct contact with phosphate ester hydraulic fluids.
For subsea production and drilling control systems, the internal pressure sheath of an unbonded flexible pipe is extruded as a continuous polyamide barrier layer over the roughbore carcass or as small-bore control tubing inside thermoplastic umbilical bundles. The AUROmid PA12 TR55 black 9005 grade is used at 100 parts in this application, with no added carbon black masterbatch because the 9005 black is part of the pellet; re-granulate is restricted to 10 phr or excluded entirely for pressure sheath qualification because virgin resin lot control is typically written into the pipe manufacturing procedure. Compliance documents for the finished flexible pipe reference API Spec 17J, ISO 13628-2, and material qualification testing under NORSOK M-710, with additional lot-release tests performed per ISO 1133-1:2022 for melt flow stability, ISO 527-2 for tensile yield, and ISO 179-1/1eA for notched Charpy at −30 °C. The pressure sheath is extruded on a 45–60 mm single-screw extruder with 30 L/D, melt temperatures between 235–250 °C, and a sheathing die that forms wall thicknesses of 3–8 mm over the carcass. The cooling arrangement is staged from 80 °C to 25 °C to reduce shrinkage voids and frozen-in stress. In-line dielectric testing and laser measurement of thickness are used, and the outer surface is held free of gels larger than 0.5 mm because gel particles in the sheath can initiate rapid gas decompression fractures after gas saturation and pressure drop. Terminal product types include unbonded flexible riser pressure sheaths, water injection line liners, umbilical control tubing, and methanol injection lines. The main limitation is sustained wet hydrocarbon service: PA12 pressure sheaths are typically limited to continuous service near 60–70 °C in hydrocarbon/water mixtures, and this specific conditioned TR55 grade requires NORSOK M-710 sour gas and rapid gas decompression testing for each gas composition before a design temperature above 60 °C is accepted.
Low-voltage cable protection in rail vehicles and heavy machinery uses corrugated or smooth-bore conduit that must balance PA12 impact resistance with the thermal and smoke requirements of the installation environment. The base resin is 100 parts AUROmid PA12 TR55 black 9005; when a halogen-free flame retardant masterbatch is needed to meet rail fire performance, addition levels of 3–6 wt% are typical, but the direct consequence is a measurable loss in low-temperature impact of approximately 15–25% at −30 °C compared with the unfilled base grade. Published data for this exact TR55 formulation in fully approved EN 45545-2 HL2 conduit configurations is limited, so every flame retardant masterbatch and wall thickness combination requires full subset testing rather than assumed equivalence. The conduit is qualified under IEC 61386-1:2008 for cable management, EN 45545-2 for rail vehicle fire hazard, and UL 94 for flammability; where used in North American transit applications, NFPA 130 may also apply. Corrugated conduit is produced by extruding a smooth tube at 18–22 mm outside diameter and 0.5–0.8 mm wall, then passing it through a downstream adjustable corrugator track with vacuum forming at 15–30 m/min. The melt temperature is held at 235–245 °C and the corrugator moulds are water-cooled to 20–25 °C to prevent pitch variation. Terminal product types include corrugated rail harness conduits, underbody cable sleeves, heavy equipment hydraulic hose protection, and indoor cable routing ducts. The operational boundary is severe: brominated flame retardant packages should be avoided because decomposition during processing can corrode screw and die surfaces, and the wall thickness should not fall below 0.5 mm when the conduit is installed in locations with stone impact or ice abrasion.
Industrial pneumatic automation tubing commonly fails at the push-in fitting interface rather than at internal burst pressure, because cyclic pressure pulses from 0.2–0.8 MPa at 2–5 Hz cause incremental micro-slip of the tube surface against the internal gripping ring. In this segment AUROmid PA12 TR55 black 9005 is processed at 100 parts, with a UV stabilizer masterbatch metered at 0.2–0.5 phr only where the tube is routed in direct sunlight, and edge regrind is limited to 20 phr to maintain consistent surface hardness. The tube is manufactured to the dimensional requirements of DIN 73378 and the connector compatibility requirements of ISO 14743, while the compressed air supply is typically specified to ISO 8573-1 class 3.3.3 to limit solid particle, water, and oil contamination. Extrusion is performed on a single-screw line with 25–30 L/D screw, melt temperature 230–245 °C, and a vacuum sizing tank at 16–20 °C; outside diameter is controlled to ±0.05 mm and tube ovality is held below 0.05 mm because both parameters determine push-in fitting retention force and leak rate. Surface roughness is measured at Ra ≤ 0.25 µm to prevent seal lip abrasion, and laser marking is applied before cutting to length. Terminal components include inert gas actuation lines, vacuum pick-and-place lines, robotic end-of-arm tubing, and solenoid valve manifold feeder tubes. The boundary condition of the application is that the tube should not be used with continuous compressed air temperatures above 80 °C unless pressure rating is derated, and direct contact with mineral oil aerosol from poorly maintained compressors at oil concentration above 5 mg/m³ may plasticize the PA12 tube wall over long-term exposure.
Cable ties and harness fixation components made from PA12 TR55 black 9005 are specified for outdoor and transport applications where repeated bending during maintenance or high vibration causes brittle failure in less ductile polyamides. The formulation uses 100 parts of the precolored conditioned compound, with a UV stabilizer masterbatch at 0.5–1.0 wt% for outdoor exposure classes; re-granulate from runner systems is added at 15–20 phr after drying, and no additional carbon black is required. Compliance is assessed under IEC 62275, EN 62275, and UL 62275 for cable management ties, with weathering validation performed according to ISO 4892-2 for UV exposure and tensile retention measured by ISO 527-2. Injection molding of cable ties uses 8–16-cavity cold runner tools, melt temperature 240–250 °C, mould temperature 60–80 °C, injection speed 40–80 mm/s, and holding pressure 45–70 MPa; cycle times are typically 8–15 s depending on tie width and wall section. Parts are conditioned at 23 °C/50% relative humidity to a moisture content of 0.10–0.15% before flexural and tensile tests because dry-as-moulded samples give artificially high stiffness but low ductility. Terminal product types include UV-resistant external cable ties, railway harness fixing ties, solar array cable management ties, and reusable releasable ties for temporary installations. The process limitation is that sharp gates and poorly radiused ejector marks reduce sidewall flexural life; the material is not recommended for continuous service above 100 °C or for direct exposure to strong mineral acids, which can hydrolyze the amide backbone.
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Aurora Kunststoffe AUROmid PA12 TR55 black 9005 PA12, Conditioned is a polyamide 12 injection moulding and extrusion compound supplied in a moisture-equilibrated state referenced to ISO 291 standard atmosphere conditioning. The grade designation combines a PA12 base polymer with a jet-black pigment masterbatch corresponding to RAL 9005; the TR55 suffix identifies a specific viscosity and additive package within the AUROmid PA12 portfolio. In the conditioned state, the material is characterised by a density of 1.01–1.03 g/cm³ when measured to ISO 1183-1, an equilibrium moisture uptake of 0.5–0.7 % at 23 °C and 50 % RH to ISO 62, and a saturation uptake approaching 1.4–1.6 % after full immersion in water at 23 °C. Unlike PA6 and PA66, the lower amide-group density of PA12 restricts hygroscopic swelling and yields a conditioned tensile modulus closer to the dry value than is observed in short-chain aliphatic polyamides. The material is intended for injection moulding and extrusion of functional components requiring low-temperature toughness, low water uptake, and resistance to hydrolysis and aliphatic fluids. The conditioned state is not a processing-ready moisture level; before melt processing, the granulate must be dried back to a residual moisture target below 0.10 % to prevent surface splay, gate-vestige silver streaks, and hydrolytic chain scission.
Conditioning suppresses yield stress and tensile modulus relative to dry-as-moulded values because absorbed water acts as an internal plasticizer within the polyamide matrix. At 23 °C and a test speed of 50 mm/min per ISO 527-1/-2, the conditioned tensile modulus of this PA12 TR55 grade commonly falls within 900–1100 MPa, while the dry value is reported between 1300–1500 MPa. Tensile strength at yield moves from approximately 42–48 MPa dry to 35–40 MPa conditioned, while elongation at break remains above 200 % in both states but increases in conditioned specimens because the absorbed water reduces the glass transition. Flexural modulus measured to ISO 178 at 2 mm/min follows the same trend, from 1200–1400 MPa dry to 900–1100 MPa conditioned. Notched Charpy impact strength to ISO 179-1/1eA is particularly sensitive to moisture: dry specimens at 23 °C typically return 5–8 kJ/m², while conditioned specimens return 15–25 kJ/m². At -30 °C the conditioned value remains within 7–10 kJ/m², which is relevant for coldweather snap-fit assemblies. Dimensional changes of up to 0.3 % in wall thickness may accompany moisture uptake and desorption in sections thicker than 3 mm.
| Property | Test standard | Dry-as-moulded | Conditioned at 23 °C/50 % RH |
|---|---|---|---|
| Tensile modulus | ISO 527-1/-2 | 1300–1500 MPa | 900–1100 MPa |
| Tensile strength at yield | ISO 527-1/-2 | 42–48 MPa | 35–40 MPa |
| Tensile elongation at break | ISO 527-1/-2 | 150–200 % | >200 % |
| Flexural modulus | ISO 178 | 1200–1400 MPa | 900–1100 MPa |
| Notched Charpy impact strength, 23 °C | ISO 179-1/1eA | 5–8 kJ/m² | 15–25 kJ/m² |
| Equilibrium moisture uptake | ISO 62 | Not applicable | 0.5–0.7 % |
The aliphatic methylene-rich structure gives AUROmid PA12 TR55 black 9005 conditioned broad resistance to oils, greases, fuels, salt solutions, and many nonpolar solvents. Swelling in standard reference fuel after immersion per ISO 1817 is typically below 3 % by mass, whereas PA6 and PA66 may absorb sufficient alcohol-blended fuel to cause visible distortion and dimensional instability in connectors and tubing retainers. Resistance to hot water and aqueous glycol coolants remains acceptable below 80 °C; long-term hydrothermal ageing above 90 °C may hydrolyse the polyamide chain, and service life is governed by wall thickness and the residual antioxidant package rather than equilibrium moisture alone. Concentrated mineral acids, phenols, and hot aqueous zinc chloride solutions act as stress-cracking agents and should not be used with this grade. At sub-zero temperatures, PA12 retains ductility because the backbone has a glass transition below 45 °C dry and lower when conditioned; notched Charpy impact at -40 °C normally exceeds 6 kJ/m². In cable ties, snap-fit connectors, and pneumatic clips moulded with wall thickness 1.5–3.0 mm, the conditioned grade resists impact loading after outdoor thermal cycling. Abrasive wear rates for unfilled PA12 are higher than for glass-filled PA12; published data for this specific black 9005 configuration is limited, but pin-on-disc testing of unfilled PA12 against steel typically falls in the 10⁻⁵ mm³/(N·m) range under 1 MPa contact pressure and 0.1 m/s sliding velocity. The carbon black pigment may reduce ultraviolet degradation and surface oxidation but is not a conductive additive; surface resistivity remains in the insulating range, and static dissipative requirements require a designated antistatic grade.
On production-scale injection moulding equipment with a general-purpose screw of 20:1–25:1 L/D and a compression ratio of 2.0:1–2.5:1, the PA12 melt is processed using a barrel profile from 220 °C at the feed zone to 245–250 °C at the nozzle. Mould temperature should be held at 40–80 °C; lower mould temperatures reduce cycle time but may produce post-mould crystallisation and dimensional drift. The melt temperature window is approximately ±10 °C around 245 °C; below 230 °C underfill and flow lines may appear in thin sections below 1 mm, while above 260 °C oxidative discoloration increases and the maximum hot-runner residence time should be reduced to 4 min. To process the conditioned grade, the granulate must first be dried in a desiccant dryer at 80 °C for 4–6 h to a residual moisture below 0.10 %, because the 0.5–0.7 % equilibrium moisture used for mechanical testing is sufficient to create splay and reduced weld-line impact. Insufficient drying on hot-runner tools is observed as silver streaking at gate vestiges and weld-line Charpy impact below 8 kJ/m². Hot runner temperatures are normally maintained between 235 °C and 250 °C; the black 9005 pigment masterbatch requires back pressure of 0.5–1.0 MPa to avoid streak formation. Typical mould shrinkage for unfilled PA12 is 0.8–1.2 % in flow direction and 1.0–1.4 % transverse direction when measured on ISO 294-4 plaques. Ejection from a mould below 40 °C can produce post-shrinkage of 0.2–0.3 % after 24 h because secondary crystallisation continues after demoulding. The melt volume-flow rate at 230 °C and 2.16 kg is commonly between 8 cm³/10 min and 15 cm³/10 min when measured to ISO 1133-1:2022.
Compared with PA6 and PA66, AUROmid PA12 TR55 black 9005 conditioned exhibits lower tensile and flexural strength but significantly lower moisture absorption and better retention of dimensions in humid service. PA6 at equilibrium to 23 °C and 50 % RH absorbs 2.5–3.0 % water and PA66 absorbs 2.0–2.5 %, while PA12 remains at 0.5–0.7 %; this reduces dimensional change in humid enclosures and lowers the variation in modulus between dry and conditioned states. The melting point of PA12 is 175–180 °C by ISO 11357-3, compared with 220–225 °C for PA6 and 260–265 °C for PA66; the lower processing temperature allows lower energy input and permits co-moulding with temperature-sensitive substrates. Against PA11, which also absorbs 0.5–0.7 % moisture, the PA12 grade typically offers slightly lower density and comparable low-temperature impact, but PA11 may offer higher heat-ageing resistance in some formulations. Against PA612, which absorbs approximately 1.0–1.5 % moisture, PA12 offers better low-temperature toughness and lower water uptake but lower continuous-use heat resistance. Glass-fibre-reinforced PA12 grades provide tensile modulus above 4000 MPa, far exceeding this unfilled TR55 conditioned grade, but they sacrifice elongation at break and produce anisotropic shrinkage in moulded parts.
The following table is an order-of-magnitude comparison for unfilled aliphatic polyamides, not a replacement for grade-specific datasheet limits:
| Polymer | Equilibrium moisture at 23 °C/50 % RH per ISO 62 | Melting range per ISO 11357-3 | Typical conditioned tensile modulus per ISO 527-1/-2 | Notched Charpy impact conditioned per ISO 179-1/1eA |
|---|---|---|---|---|
| PA6 | 2.5–3.0 % | 220–225 °C | 900–1300 MPa | 8–15 kJ/m² |
| PA66 | 2.0–2.5 % | 260–265 °C | 900–1200 MPa | 10–15 kJ/m² |
| PA11 | 0.5–0.7 % | 185–190 °C | 900–1100 MPa | 15–25 kJ/m² |
| PA612 | 1.0–1.5 % | 215–220 °C | 1000–1300 MPa | 8–12 kJ/m² |
| PA12 | 0.5–0.7 % | 175–180 °C | 900–1100 MPa | 15–25 kJ/m² |
Parts moulded from AUROmid PA12 TR55 black 9005 conditioned are used in cable glands, flexible hose connectors, clips, and housings where the combination of low-temperature impact, low moisture uptake, and resistance to aliphatic fluids is required. In cable glands to IEC 62444, wall thickness of 2–4 mm and conditioned Charpy impact values above 15 kJ/m² permit cold installation without splitting; the material’s moisture uptake below 0.7 % at 23 °C/50 % RH limits dimensional change in electrical enclosures when relative humidity varies between 20 % and 80 %. In snap-fit closures and hose connectors under continuous exposure to diesel vapour at temperatures below 60 °C, the conditioned PA12 resists stress cracking and retains tensile elongation above 200 % in the fitting body. The carbon black pigmentation provides weathering resistance but does not provide any specific electrical or flame-retardant rating; flammability is classified as HB at 1.6 mm thickness under UL 94 for unfilled PA12, and designs operating above 100 °C or requiring glow-wire compliance must use a flame-retarded or reinforced grade.
