| HS Code | 307538 |
| Density | 1.01 g/cm³ |
| Tensile Modulus | 1800 MPa |
| Tensile Strength | 50 MPa |
| Elongation At Break | 250 % |
| Charpy Notched Impact Strength 23 C | 10 kJ/m² |
| Melting Temperature | 178 °C |
| Heat Deflection Temperature 1 8 Mpa | 55 °C |
| Vicat Softening Temperature | 140 °C |
| Water Absorption 24h | 0.3 % |
| Moisture Absorption 23 C 50 Rh | 0.8 % |
| Linear Mold Shrinkage | 1.2 % |
| Surface Resistivity | 10¹³ Ohm |
As an accredited Aurora Kunststoffe AUROmid PA12 TR55 natural 1102 PA12, Dry factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Aurora AUROmid PA12 TR55 natural dry pellets are supplied in sealed, moisture-proof 25 kg bags to maintain dryness. |
| Container Loading (20′ FCL) | 20′ FCL: Load in dry container, secure pallets, protect from moisture and direct heat, no floor contact for dry PA12 granules. |
| Shipping | Not regulated as dangerous goods for transport. No UN number, no hazard class or packing group assigned. Ship dry, sealed, in standard packaging to avoid moisture pickup and dust accumulation. Suitable for road, rail, sea, or air freight without special transport controls. |
| Storage | Store Aurora Kunststoffe AUROmid PA12 TR55 natural 1102 (PA12, Dry) in its original, unopened packaging in a cool, dry, well-ventilated area. Keep sealed to prevent moisture absorption, away from direct sunlight, heat sources, and open flames. Ideal storage temperature is below 50°C. Use within the recommended shelf life to maintain material properties. |
| Shelf Life | Store in original sealed packaging, cool and dry. Shelf life is 12 months from delivery if kept dry. |
Aurora Kunststoffe AUROmid PA12 TR55 natural 1102 (dry) enters medical fluid-handling and respiratory device programs as a pre-dried, natural-colour impact-modified polyamide 12 compound. In cleanroom injection molding and extrusion, the pellets are transferred from sealed moisture-barrier liners directly into a desiccant-hopper feed throat; ambient exposure at 40–60 % RH beyond 30 min can raise pellet surface moisture above the 0.10 % threshold and produce silver streaks in transparent luer fittings. The manufacturing compliance package for single-use and short-term patient-contact parts is anchored to ISO 10993-1:2018 biological evaluation, USP <88> Class VI biological reactivity, and 21 CFR 177.1500 for nylon resins intended for repeat-use food-contact and medical device applications; lot-level traceability is maintained under ISO 13485:2016. The downstream production process uses all-electric injection molding machines with screw diameters of 25–35 mm and L/D ratios of 20:1–25:1, barrel temperature profiles from 230 °C to 250 °C, mold temperatures of 50–70 °C, and hold pressures sufficient to minimize sink marks without inducing frozen-in stress. Melt residence time at the upper barrel setpoint is held below 8 min to limit yellowing. For patient-contact devices, the formulation addition ratio is 100 wt% virgin compound; regrind is excluded from validated production because re-melting shifts extractables profiles and optical clarity. Where a coloured marker is required on non-patient-contact accessories, a polyamide-compatible masterbatch may be dosed at 1.0–2.0 wt% only after ISO 10993-1 extractables testing and ASTM D1003 haze testing are repeated. Terminal product types include small-bore luer lock adapters tested to ISO 80369-7:2016, ventilator circuit connectors, respiratory mask clips, fluid manifold bodies for clinical chemistry analyzers, and transparent pump head covers used in low-pressure diagnostic fluid handling.
Pneumatic handling lines and end-of-arm tooling specify the dry PA12 TR55 grade because the polymer retains ductility in dry compressed-air circuits and resists hydrolysis in lubricated air streams, while transparent walls permit visual verification of moisture accumulation. Compliance is drawn from ISO 14743:2019 for push-in fittings and associated thermoplastic tubing, ISO 8573-1:2010 for compressed-air purity class documentation, and 2011/65/EU RoHS for restricted-substance declarations; halogenated flame-retardant packages are avoided because they reduce weld-line integrity in pressurized fittings. The conversion route for tubing employs a single-screw extruder with L/D 30:1, vacuum venting, a 75–120 µm melt filter, and a vacuum calibration tank followed by a water bath at 20–40 °C; tube outside diameters range from 4 mm to 12 mm with wall tolerances held to ±0.05 mm. Injection-molded push-in fittings are produced in hot-runner tools with valve gates to reduce stringing and shear-induced discolouration. The formulation addition ratio for extrusion is 100% virgin compound; first-generation sprues and runners from fitting production may be reintroduced at ≤ 25 wt% only after closed-loop granulation and re-drying to ≤ 0.08 % residual moisture. Process limits are critical: tube line speeds above 30 m/min can initiate melt fracture in unlubricated PA12 unless die land length and draw-down ratio are adjusted, while compressed-air oil carryover beyond ISO 8573-1 class 4 introduces plasticizing oils that promote environmental stress cracking in thin-wall fittings. Terminal product types include push-in connectors, transparent polyamide pneumatic tubing, vacuum cup bodies, robotic gripper jaws, and flow-control needle housings for high-cycle automated assembly.
Where dilute acids, aliphatic hydrocarbons, and alkaline cleaning solutions must be observed through the pressure boundary, AUROmid PA12 TR55 natural 1102 replaces polycarbonate in pump filter bowls, sight tubes, and flow meter cups because polycarbonate develops stress cracks in alkaline surfactant exposure and amorphous PET lacks the required impact resistance. Chemical resistance is evaluated under ISO 175:2010 immersion testing; environmental stress-cracking resistance is screened under ISO 22088-3:2006 bent-strip method in the target cleaning chemistry; finished part documentation references 2011/65/EU RoHS and REACH (EC) No 1907/2006 Article 33 candidate-list obligations. Production uses injection-compression molding for thick-wall filter bowls to reduce residual birefringence; barrel temperature is maintained at 235–250 °C, mold temperature at 60–80 °C, and cooling time is extended to 20–40 s for sections above 6 mm. The formulation addition ratio is 100% virgin pellets because regrind in transparent pressure boundaries increases gel-particle count and weld-line haze; if UV stabilization is needed for outdoor pump enclosures, a low-dust UV stabilizer masterbatch may be dosed at 0.5–1.5 wt% only after ISO 13468-1:2019 total transmittance and ASTM D1003 haze values remain within specification. Concentrated phenols, cresols, and strong oxidizing acids attack PA12 and fall outside the service envelope without immersion validation. Terminal product types include chemical metering pump sight ports, level indicator tubes, filter bowl bodies, flow metering cups for low-pressure dosing, and transparent access windows on industrial process enclosures.
The conversion limits below separate injection molding from tubing extrusion because the two processes induce different shear histories and moisture regain rates during production.
| Parameter | Injection molding | Extrusion tubing | Control basis |
|---|---|---|---|
| Residual moisture before melt | ≤ 0.08 % | ≤ 0.08 % | ISO 15512:2019 |
| Melt temperature window | 230–250 °C | 220–245 °C | Supplier processing advisory |
| Mold / water temperature | 50–70 °C | 20–40 °C | Internal process control |
| Maximum first-generation rework | 0–25 wt% application-dependent | ≤ 25 wt% | Internal validation |
PA12 TR55 natural 1102 is extrusion-compounded into gel-filled and dry-core loose tubes for outdoor fibre optic cables where optical attenuation must remain stable over −40 °C to 70 °C thermal cycles. Compliance follows IEC 60794-1-2:2021 for environmental test methods on fibre optic cables, ITU-T L.10 for optical fibre cable performance, and raw material batch traceability under ISO 9001:2015; no halogenated flame retardants are added because the product occupies the core of outdoor cables where fire-retardant packaging is applied at the outer sheath. The extrusion line uses a barrier screw with L/D 24:1–30:1, melt filtration at 25–40 µm, vacuum sizing to control tube outside diameter between 1.8 mm and 2.5 mm, and wall thickness between 0.20 mm and 0.35 mm; the water quenching bath is held at 20–25 °C to minimize post-crystallization shrinkage. The formulation addition ratio is 100% base compound; mineral fillers are excluded because particulates increase fibre attenuation and reduce kink resistance, while processing stabilizer masterbatches may be dosed at 0.5–1.5 wt% only if line-restart frequency is continuous and the package passes IEC 60794-1-2 heat-cycle attenuation. Melt temperature is constrained to 220–250 °C: above 250 °C, polymer degradation generates gel bodies that block the fibre cavity; below 220 °C, high melt viscosity produces eccentric wall thickness and microbending loss. Terminal product types include optical fibre loose tubes, central tube cable jacket precursors, dry-core mini loose tube microducts, and colour-coded identification tubes for field splicing.
Injection-molded goggle frames, face-shield brackets, and ski boot components use the dry PA12 TR55 grade for low-temperature impact resistance and optical clarity at wall thicknesses that would embrittle PA6 or polycarbonate after UV ageing. The material is dried to ≤ 0.08 % residual moisture and processed within 24 h after drying or held in a heated hopper at 60 °C to prevent moisture regain. Compliance for eyewear frames and protective housings follows ISO 12312-1:2022 for sunglasses and related eye protection, EN 166:2001 for personal eye protection, and REACH (EC) No 1907/2006 Annex XVII restricted substances; no plasticizers classified as phthalate reprotoxins are added. Processing is performed on all-electric injection molding machines with clamp force between 800 kN and 1600 kN for multi-cavity goggle frames, using melt temperatures of 235–250 °C and mold temperatures of 50–70 °C to reduce flow haze. The formulation addition ratio is 100% natural 1102; if impact modification or UV stabilization is compounded, the additive total is kept below 3 wt% and the completed compound is re-qualified under ISO 179-1/1eA Charpy notched impact at −30 °C and ISO 13468-1:2019 transmittance. The PA12 TR55 surface is not sufficiently hard for lens glazing; direct exposure to mineral dust degrades optical clarity and requires hard coating. Terminal product types include ski goggle frames, helmet retention clips, face-shield frame assemblies, sports safety spectacle frames, and transparent shell inserts in alpine touring boot cuffs.
For fluorescence, UV-VIS, and clinical analyzer modules, PA12 TR55 natural 1102 is injection-molded into structural shrouds, filter housings, and cuvette holders where stray light and dimensional change after repeated thermal cycles must remain low. Compliance includes IEC 61010-1:2010/AMD1:2016 for laboratory equipment safety, 2011/65/EU RoHS, and ISO 13468-1:2019 for total luminous transmittance of transparent parts; surface resistivity is not modified with conductive carbon because such fillers destroy the natural transparency required by optical sections. The downstream molding process uses low-shear screw geometry with a gradual compression ratio of 2.0:1–2.5:1, melt temperatures of 230–245 °C, mold temperatures of 50–70 °C, and injection velocities that are reduced in the final 20 % of fill to avoid jetting and flow marks on lens-facing surfaces. The formulation addition ratio is 100% as-supplied dry compound; no internal lubricants are added because migratory lubricants condense on optical windows and reduce signal-to-noise ratio in fluorescence channels. Regrind from cold runners may be used up to 20 wt% only for non-optical mounting brackets after full re-drying and melt filtration at 50 µm. Polar aprotic solvents such as dimethyl sulfoxide, concentrated formic acid, and cresol attack PA12 and require immersion validation under ISO 175:2010 before use in solvent-adjacent analytical fluid paths. Terminal product types include cuvette holders, optical filter mounts, spectrometer lamp housings, microplate adapters, and transparent front panels for benchtop diagnostics.
Competitive Aurora Kunststoffe AUROmid PA12 TR55 natural 1102 PA12, Dry prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
The polyamide 12 compound designated AUROmid PA12 TR55 natural 1102 PA12, Dry is an unfilled, natural-colour, impact-modified polyamide 12 supplied by Aurora Kunststoffe GmbH in moisture-controlled packaging. The term Dry does not represent a single harmonised moisture specification; it identifies packaging and handling intended to deliver low residual water to the processing line, and the lot-specific certificate of analysis must be consulted for actual moisture content. Polyamide 12 is a semicrystalline aliphatic polyamide with a lower amide group concentration than PA6 or PA66. This structural feature reduces equilibrium moisture uptake and improves dimensional stability in humid conditions. For unfilled PA12, density determined according to ISO 1183-1 is generally reported in the range 1.01 g/cm³ to 1.04 g/cm³, while the melt temperature measured by differential scanning calorimetry according to ISO 11357-3 is normally near 178 °C. Lot-specific values for the TR55 modification must be obtained from the supplier because impact modifiers and additive packages shift thermal and mechanical response relative to unmodified PA12.
The TR55 designation refers to a toughness-modified system. Unfilled PA12 in dry-as-molded condition already exhibits high molecular mobility at ambient temperature, and tensile specimens tested according to ISO 527-2 may show elongation at break in excess of 200%. The role of the impact modifier is not simply to raise room-temperature elongation; it alters the failure mode under notched and multiaxial loading, particularly at low temperature. Notched Charpy impact strength tested according to ISO 179-1/1eA at 23 °C for unmodified unfilled PA12 commonly falls between 5 kJ/m² and 12 kJ/m². Impact-modified PA12 grades may exceed 15 kJ/m² under the same conditions and can retain ductile behaviour below -20 °C. These values are comparative ranges, not certified lot data. The specific TR55 natural 1102 values must be confirmed because modifier loading also reduces tensile modulus and may lower the heat deflection temperature. In sections subjected to sustained load, creep tests based on ISO 899-1 are more informative than short-term tensile tests. The natural 1102 colour designation indicates the absence of carbon black or organic pigments; therefore ultraviolet stabilisation for outdoor exposure must be verified separately. This distinguishes the natural grade from weather-resistant black PA12 compounds and from UV-stabilised colour-matched alternatives.
A comparison of resin classes is needed to position AUROmid PA12 TR55 natural 1102 PA12, Dry among standard polyamide choices. The data in Table 1 are general reference ranges for unfilled dry resin categories and must not be interpreted as certified properties of the specific grade. The effect of the TR55 impact-modification package is most pronounced in notched impact behaviour and in reduced stiffness relative to unmodified PA12.
| Property | Test method | PA12 unfilled dry | PA6 unfilled dry | PA66 unfilled dry |
|---|---|---|---|---|
| Density at 23 °C | ISO 1183-1 | 1.01–1.04 g/cm³ | 1.12–1.14 g/cm³ | 1.13–1.15 g/cm³ |
| Equilibrium moisture at 23 °C, 50% RH | ISO 62 | 0.7–0.9% | 2.5–3.0% | 2.0–2.5% |
| Melt temperature | ISO 11357-3 | 175–180 °C | 220–225 °C | 255–265 °C |
| Tensile modulus, dry | ISO 527-2 | 1.3–1.6 GPa | 2.8–3.2 GPa | 2.8–3.2 GPa |
| Notched Charpy impact, 23 °C, dry | ISO 179-1/1eA | 5–12 kJ/m² | 4–8 kJ/m² | 4–8 kJ/m² |
Compared with PA6 and PA66, PA12 exhibits lower density and lower equilibrium moisture uptake. The lower amide concentration also contributes to reduced plasticisation by water at a given humidity. However, PA12 has a lower melting point and lower dry-state modulus than PA6 and PA66, so it is not interchangeable in high-temperature structural applications. Compared with PA11, PA12 has a similar moisture absorption profile but a slightly different melting point and may differ in processing shrinkage; direct substitution requires cavity-by-cavity dimensional evaluation according to ISO 294-4.
Moisture control is the principal processing risk for polyamide 12. The Dry suffix should not be read as an unconditional exemption from drying. If the packaging remains sealed and storage temperature is below 30 °C, the resin may be introduced directly into a closed hopper. If the packaging is opened or the warehouse relative humidity exceeds 60%, moisture sorption increases. At melt temperatures above 230 °C, residual water above 0.10% can hydrolyse the polymer backbone and produce splay, silver streaks, and viscosity depression. Moisture also acts as a temporary plasticiser; an increase from 0.05% to 0.20% can shift melt viscosity enough to alter screw recovery and cushion stability. Capillary rheometry according to ISO 11443 on dried and conditioned samples is used to quantify the melt viscosity shift. For unfilled PA12, desiccant drying at 80 °C for 4 h to 8 h is commonly used to bring moisture below 0.10%. The dryer should maintain a dew point below -30 °C and should use temperature control to avoid prolonged residence above the grade-specific softening point. Impact-modified grades may be more sensitive to thermal oxidation during extended drying; therefore air circulating ovens should not be used unless the technical datasheet explicitly permits it. Moisture verification by Karl Fischer titration or ISO 15512 is preferable to loss-on-drying because additive packages in impact-modified compounds can release volatile components that distort gravimetric readings.
Processing trials on reciprocating injection molding machines with screw diameters appropriate to the shot volume are used to set the melt temperature profile. Unfilled PA12 melts are typically processed from 230 °C to 250 °C, with the nozzle temperature maintained below 250 °C to limit thermal degradation. A general-purpose screw with an L/D ratio between 20:1 and 25:1 and a compression ratio between 2.0:1 and 3.0:1 is used for natural unfilled grades. Back pressure from 5 bar to 15 bar is often applied to homogenise the melt without excessive shear heating. Residence time at melt temperature should not exceed 10 min; if shot size is less than 20% of barrel capacity, a smaller barrel or lower melt temperature should be used to limit degradation. Mold temperature is a dominant parameter for PA12 because it controls crystallisation rate and final part dimensions. Mold temperatures below 40 °C may create an amorphous skin with higher post-mold shrinkage, while mold temperatures above 80 °C may extend cooling time without proportional property gain. For technical parts, a mold temperature of 60 °C to 80 °C is frequently selected to stabilise crystallinity and dimensional tolerance. The exact settings must be established for the specific part thickness, gate size, and holding pressure profile.
| Process variable | Typical range for unfilled PA12 | Unit |
|---|---|---|
| Melt temperature | 230–250 | °C |
| Mold temperature | 40–80 | °C |
| Drying temperature | 80 | °C |
| Drying time | 4–8 | h |
| Residual moisture target | ≤0.10 | % |
| Dryer dew point | ≤-30 | °C |
| Back pressure | 5–15 | bar |
| Screw L/D ratio | 20:1–25:1 | dimensionless |
| Screw compression ratio | 2.0:1–3.0:1 | dimensionless |
AUROmid PA12 TR55 natural 1102 PA12, Dry is evaluated in applications where components are exposed to cold impact, fuel or hydraulic fluid contact, and humidity cycling. The impact-modified matrix is relevant for snap-fit assemblies, cable conduits, pneumatic connectors, and protective housings that must not fail in brittle mode at low temperature. Low-temperature impact tests should be performed according to ISO 179-1/1eA or ISO 180 at the minimum service temperature. Because impact modifiers can lower modulus, the same component should be subjected to stiffness-limited deflection checks, not only strength calculations. Chemical resistance should be assessed according to ISO 175 using the actual fluid mixture. PA12 generally resists aliphatic hydrocarbons, diesel fuel, lubricating oils, and many hydraulic fluids at temperatures below approximately 80 °C. Strong acids, phenols, cresols, and chlorinated solvents are known to degrade PA12 and should be considered incompatible unless specifically tested. For fuel vapor applications, permeation testing based on SAE J2260 or equivalent automotive specifications may be required. Published data for this specific TR55 natural 1102 configuration in long-term chemical ageing is limited; validation must be carried out on the actual moulded component.
Production-scale applications for impact-modified PA12 grades include pneumatic tubing extruded on vacuum calibration lines, corrugated cable protection produced on rotary corrugators, and injection-molded connectors with integral snap fits. In pneumatic tubing, closed-loop water bath temperature control and puller speed feedback are used to maintain outside diameter and ovality. Thin-wall tubing may require vacuum sizers with slot widths matched to the die swell of the PA12 melt; die swell for unfilled PA12 is typically moderate but must be measured by rheological extrusion trials. Injection-molded connectors processed from AUROmid PA12 TR55 natural 1102 PA12, Dry should be evaluated for post-mold shrinkage after 24 h conditioning at 23 °C and 50% relative humidity, because PA12 absorbs moisture slowly and dimensions can drift. Shrinkage measurements based on ISO 294-4 should be supplemented by moisture-conditioned dimensional checks for parts used in humid environments.
Regulatory compliance is not guaranteed by resin class alone. The natural unfilled PA12 base resin may fall within the scope of food-contact polymer listings such as FDA 21 CFR 177.1500 or the European Union plastics regulation EU 10/2011, but the TR55 impact-modification package must be examined separately for food-contact or medical approval. Documentation for RoHS Directive 2011/65/EU and REACH Regulation EC 1907/2006 must be obtained from the supplier. Customers should request the lot-specific certificate of analysis, safety data sheet, and regulatory statement before specification. The absence of carbon black in natural 1102 means that the grade may be suitable for colour compounding, but colour masterbatch addition can alter impact performance and dimensional stability; masterbatch compatibility and let-down ratio should be verified by testing according to ISO 527-2 and ISO 179-1/1eA.
