| HS Code | 869609 |
| Density | 1.01 g/cm³ |
| Melt Volume Flow Rate 235 C 2 16 Kg | 1.5 cm³/10min |
| Melting Point | 178 °C |
| Vicat Softening Temperature B50 | 145 °C |
| Tensile Modulus | 1000 MPa |
| Tensile Stress At Yield | 45 MPa |
| Tensile Strain At Break | 300% |
| Charpy Impact Strength Unnotched 23 C | No break |
| Charpy Impact Strength Notched 23 C | 10 kJ/m² |
| Rockwell Hardness R Scale | 105 |
| Water Absorption At Saturation 23 C 50 Rh | 0.9% |
| Water Absorption 24h | 0.2% |
As an accredited Arkema Rilsamid AECHVO PA12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Arkema Rilsamid AECHVO PA12 is supplied in sealed, moisture-proof 25 kg bags, preserving dryness and ensuring consistent processing quality. |
| Container Loading (20′ FCL) | 20′ FCL: load PA12 pellets in dry containers, secure pallets, protect from moisture, no contamination, standard cargo. |
| Shipping | Arkema Rilsamid AECHVO PA12 is a polyamide 12 resin supplied as solid granules. Ship in sealed moisture-resistant bags or drums, protected from humidity and direct heat. Keep dry, store below recommended temperature, and avoid prolonged exposure to sunlight. Product is non-hazardous under normal shipping conditions. |
| Storage | Store Arkema Rilsamid AECHVO PA12 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture absorption, which can degrade the polymer. Avoid contact with strong oxidizers. Recommended storage temperature is below 50°C. Use appropriate PPE when handling and keep away from incompatible materials. |
| Shelf Life | Shelf life is typically indefinite when stored sealed, dry, and cool; protect from moisture for optimal performance. |
Automotive evaporative-emission plumbing converts Rilsamid AECHVO into a five-layer fuel vapor return tube in which PA12 inner and outer layers enclose an EVOH hydrocarbon barrier. The coextrusion stack is set at 0.20 mm PA12 / 0.05 mm anhydride-grafted tie / 0.10 mm EVOH / 0.05 mm tie / 0.25 mm PA12, with outer-layer thickness adjusted within 0.20–0.30 mm to sustain quick-connector barb pull-off force under SAE J2044. Desiccant drying at 80 °C for 4 h reduces moisture to 0.10% maximum at a dew point ≤ -30 °C before a 30:1 L/D single-screw extruder feeds a spiral mandrel die. Barrel zones are maintained at 220 °C, 235 °C, 245 °C, and 245 °C, with die temperature at 235 °C to preserve layer distribution. Vacuum sizing is held between -0.4 bar and -0.6 bar, and extrusion pressure at the screen pack is monitored within 120–180 bar. Fuel permeation is tested under SAE J2260, while chemical resistance is evaluated by ISO 175 immersion in ASTM Reference Fuel C at 40 °C. The terminal product is a vapor return or purge line heat-formed into the chassis routing. Regrind edge trim is capped at 15 wt% because higher addition shifts melt volume-flow rate under ISO 1133-1:2022 beyond the control limit and lowers interlayer peel force below 2.5 N/mm.
On truck and trailer air brake assemblies, Rilsamid AECHVO is extruded as 6.4 mm OD × 1.0 mm wall monolayer tubing on a 24:1 L/D single-screw extruder with a vacuum tank calibrator. Melt temperature at the adapter is 240–250 °C, and draw-down ratio is held at 1.2:1 to 1.6:1 to limit axial orientation that contributes to shrinkage after heat exposure. The material is dried to 0.08% maximum moisture before extrusion. Qualification follows SAE J844 Type A and DIN 74324-1, with cold impact testing at -40 °C and burst testing after 72 h at 100 °C. The operating pressure of the circuit is 0.86 MPa, and the produced tube is tested at 2.5× working pressure, but the limiting variable is retention of elongation at break measured by ISO 527-1/2 after thermal cycling. Production lines observe that inner-wall bubble formation appears when melt pressure drops below 120 bar or moisture exceeds 0.10%, so both parameters are controlled independently. No additional plasticizer is introduced at this wall thickness because diesel fuel extraction at 60 °C increases mass change beyond the limit specified in SAE J844.
Unbonded flexible pipe for offshore hydrocarbon transfer uses a PA12 pressure sheath extruded directly over the interlocked stainless steel carcass. The production unit is a 90 mm single-screw extruder with 30:1 L/D, a barrier screw, and a rotating crosshead die that maintains concentricity around the carcass. The melt temperature window is 220–250 °C; below 220 °C the high-viscosity grade cannot fill the carcass interstices, while above 250 °C thermo-oxidative gel formation raises filter pressure by more than 5 bar/h. Sheath wall thickness is specified at 6.0–8.0 mm with ±10% tolerance under API 17J, and ultrasonic thickness values are recorded at four circumferential positions. Methanol absorption is the principal ageing variable; immersion in 10 wt% methanol at 60 °C follows API 17TR2, and tensile modulus by ISO 527-2 is tracked over the full ageing interval. For sour service, API 17J requires qualification in the project-specific gas mixture; PA12 is not assigned beyond that envelope, and published data for gas permeation through this specific AECHVO configuration at elevated H₂S partial pressure is limited. The terminal product is the pressure sheath in unbonded flexible riser and jumper constructions supplied to ISO 13628-2.
| Extrusion segment | Melt temperature | Moisture target | Screw L/D | Draw-down or sizing condition | Governing test standard |
|---|---|---|---|---|---|
| Multilayer fuel vapor tube | 220–245 °C | ≤ 0.10% | 30:1 | 1.1:1–1.3:1 | SAE J2260 |
| Air brake tubing | 240–250 °C | ≤ 0.08% | 24:1 | 1.2:1–1.6:1 | SAE J844 |
| Offshore pressure sheath | 220–250 °C | ≤ 0.10% | 30:1 | Carcass filling, no draw-down | API 17J |
| Cable jacket | 230–250 °C | ≤ 0.10% | 20:1–24:1 | 1.5:1–2.5:1 | ISO 6722-1 |
| Hydraulic hose liner | 235–250 °C | ≤ 0.10% | 24:1 | 1.3:1 | SAE 100R7 |
| EV coolant tube | 230–245 °C | ≤ 0.10% | 30:1 | 1.1:1–1.4:1 | ISO 16750-4 |
When line speed exceeds 20 m/min, cable jacketing of thin-wall XLPE-insulated conductors for automotive sensor and battery-management harnesses requires a pressure tooling crosshead die and a laser diameter gauge. Rilsamid AECHVO is applied at 0.20 mm ± 0.02 mm wall thickness and 230–250 °C melt temperature, with draw-down ratio at 1.5:1 to 2.5:1. The jacket is subjected to the voltage withstand and scrape tests of ISO 6722-1, followed by heat aging at the temperature class defined by the harness specification. The grade is supplied as a black UV-stabilized material, relevant for exterior routing where SAE J2027 xenon-arc exposure is contractually required. Flame performance is a boundary condition: unreinforced PA12 does not reach UL 94 V-0, so halogen-free flame-retardant PA12 is substituted when the specification demands V-0. The terminal product is a jacketed sensor cable for engine-compartment routing exposed to hot-oil splash and stone impact.
For SAE 100R7 thermoplastic hydraulic hose, Rilsamid AECHVO is extruded as the inner liner through a crosshead die, then covered with a para-aramid fiber braid and a PA12 outer cover. The liner wall is 1.0–1.5 mm, and die land length is set at 10–15 mm to reduce melt fracture; draw-down ratio is limited to 1.3:1 because higher draw-down reduces hoop burst strength by 5–8% in the finished hose. The braid is applied at the neutral angle of 54°44′; variation beyond ±1° creates axial growth or contraction during impulse testing monitored by ISO 6803. The outer cover is extruded at 235–250 °C over the braid, filling the interstices without penetrating into the liner. The terminal product is a thermoplastic hydraulic hose classified under SAE 100R7 size tables, with impulse testing at 100 °C and oil resistance verified by volume swell in IRM 903 oil. A spark test after cover application identifies pinholes, while hydraulic line replacement records show cover abrasion at metal support brackets as the dominant wear mode; polyurethane cover is substituted where that failure mode is endurance-limiting.
| Segment | Standard designation | Test method | Controlling parameter |
|---|---|---|---|
| Fuel vapor return | SAE J2260 | Hydrocarbon permeation | EVOH barrier layer 0.10 mm |
| Quick connectors | SAE J2044 | Endform retention | Pull-off force per OEM drawing |
| Air brake tubing | SAE J844 | Cold impact | -40 °C no cracking |
| Hydraulic hose | SAE 100R7 | Impulse with flexing | Neutral angle 54°44′ |
| Cable jacket | ISO 6722-1 | Voltage withstand and scrape | Wall thickness 0.20 mm ± 0.02 mm |
| Offshore pressure sheath | API 17J | Ageing per API 17TR2 | Sheath thickness 6.0–8.0 mm ± 10% |
In battery electric vehicle thermal management loops, PA12 is specified for coolant tube sections because its equilibrium moisture absorption measured by ISO 62 is lower than PA6 and dimensional swell in glycol-water mixtures is minimized. Rilsamid AECHVO is extruded at 230–245 °C into 12 mm OD × 1.5 mm wall straight sections, then heat-stabilized in a water bath at 60 °C for 2 h and either cut to length or post-formed. The qualification protocol follows ISO 16750-4 thermal aging and pressure cycling, with the tube subjected to 1.5× system pressure or the burst test defined by the OEM specification. Quick-connector retention follows SAE J2044 for the barb profile, and the tube endform is heat-formed at 180–200 °C to avoid stress cracking. The extrusion line is run at a draw-down ratio of 1.1:1 to 1.4:1; higher draw-down creates axial orientation and increases shrinkage above 1.0% at 90 °C. The terminal product is a coolant transfer line inside a battery pack, joined by quick connectors or laser-welded fittings, with the operating limit set by the battery manufacturer’s maximum continuous coolant temperature, typically 70 °C and not above 90 °C for unreinforced PA12 without additional stabilization.
Competitive Arkema Rilsamid AECHVO PA12 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!
Arkema Rilsamid AECHVO is a black-pigmented, plasticized, heat-stabilized polyamide 12 resin supplied in pellet form. The grade is positioned within the Rilsamid A family for conversion by profile extrusion, thin-wall tubing extrusion, and injection molding. Compared with unmodified PA12, the AECHVO formulation shifts the stress-strain response from semi-rigid to flexible through internal plasticization. That modification lowers the secant tensile modulus at room temperature and reduces the ductile-to-brittle transition temperature under high-strain-rate loading. The heat-stabilizer package retards oxidative chain scission during continuous service in hot air. Typical application fields include pneumatic tubing, automotive harness conduits, protective cable sheathing, and injection-molded connectors where low moisture uptake, hydrocarbon resistance, and dimensional stability under humidity cycling are specified.
The melt is characterized by a melt volume-flow rate controlled in part by the plasticizer level. Representative values from Arkema technical literature for the AECHVO grade are reproduced in Table 1 for engineering screening. Lot-specific release values should be obtained from the certificate of analysis because plasticizer concentration is adjusted within a narrow range to maintain consistent flexibility and extrusion stability. Mechanical testing is performed on ISO 294-1 injection-molded plaques after conditioning to ISO 291 atmosphere at 23 °C and 50 % relative humidity.
| Property | Test method | Typical value | Unit |
|---|---|---|---|
| Density | ISO 1183-1 | 1.01 | g/cm³ |
| Melting temperature | ISO 11357-3 | 177 | °C |
| Melt volume-flow rate | ISO 1133-1 at 235 °C / 2.16 kg | 18 | cm³/10 min |
| Tensile modulus | ISO 527-1/-2 | 450 | MPa |
| Tensile stress at yield | ISO 527-1/-2 | 22 | MPa |
| Nominal strain at break | ISO 527-1/-2 | >300 | % |
| Charpy notched impact strength at 23 °C | ISO 179-1/1eA | no break | — |
| Charpy notched impact strength at -30 °C | ISO 179-1/1eA | 8 | kJ/m² |
| Shore hardness D | ISO 868 | 55 | — |
| Vicat softening temperature B50 | ISO 306 | 155 | °C |
| Water absorption at saturation | ISO 62 | 1.5 | % |
The values are not simultaneous and should not be used as specification limits. The material is susceptible to moisture regain during storage. The plasticizer reduces melt viscosity relative to unplasticized Rilsamid PA12, which permits lower melt temperatures during thin-wall extrusion but also increases the risk of surging if barrel temperatures are not profiled correctly.
Rilsamid AESNO and similar unplasticized PA12 grades exhibit a tensile modulus in the region of 1,500 MPa, whereas the plasticized AECHVO grade is typically below 500 MPa. This modulus reduction is accompanied by an increase in nominal strain at break from approximately 200 % to values above 300 %. The low-temperature impact response is also shifted: at -30 °C, unplasticized grades may exhibit notched Charpy values under 5 kJ/m², while AECHVO retains approximately 8 kJ/m² under the same ISO 179-1/1eA conditions. These differences derive from internal plasticization rather than from an external post-added ester plasticizer. Internal plasticization in PA12 is produced through polymer composition control during polymerization or compounding, so flexibility is less prone to extractive loss in hot oil than formulations relying solely on migratory plasticizers.
The exact plasticizer chemistry and concentration are not disclosed in public technical literature. Published data for direct comparison of plasticizer permanence under automotive heat-aging is limited. However, the heat-stabilizer package in AECHVO is intended for continuous hot-air service up to 100 °C, whereas non-heat-stabilized PA12 may embrittle after shorter oxidative induction time. Black pigmentation provides a UV-screening effect but does not eliminate photo-oxidative chain scission; outdoor service must be evaluated under ISO 4892-2 rather than assumed from pigmentation alone.
Prior to melt processing, the resin must be dried to a residual moisture content below 0.10 % as measured by ISO 15512. A closed-hopper desiccant dryer with a dew point of -30 °C or lower, set at 80 °C for 4–6 h, is appropriate for virgin material exposed to ambient air. Vacuum drying at 80 °C for 2–4 h is an alternative when the material has been stored in sealed octabin or foil-lined bags. On a 45 mm single-screw extruder with L/D 30:1 and a barrier screw, the following barrel profile is commonly used: feed 200–210 °C, compression 215–225 °C, metering 225–235 °C, and die 230–240 °C. Screen packs of 60/80 mesh are installed upstream of the breaker plate to remove carbon agglomerates and char particles. Melt pressure at the die should remain stable within ±0.5 MPa; fluctuations greater than 1.0 MPa indicate feed bridging, incorrect screw design, or moisture-related viscosity variation.
Injection molding requires a melt temperature of 230–250 °C and a mold temperature of 40–80 °C. The clamp force calculation uses a specific pressure of 0.6–0.8 tonnes per square inch of projected area for semicrystalline PA12. Screw rotation speed should be set to 50–100 rpm for 30 mm diameter reciprocating screws, and backpressure should be limited to 0.5–1.0 MPa to avoid excessive shear heating. Short-shot trials on ISO 294-1 plaques are used to determine hold pressure; gate freeze is confirmed by part weight stabilization after the hold-pressure step.
Moisture uptake in PA12 is lower than in PA6 or PA66, but it is not zero. At 23 °C and 60 % relative humidity, equilibrium moisture uptake for PA12 is approximately 1.1 % by mass; at saturation in water it reaches 1.5 % by mass. If un-dried AECHVO resin is fed to an extruder, the absorbed water converts to steam within the melt, producing die-face bubbles, melt fracture, and modulus loss in the finished article. Hydrolysis of the polyamide chain accelerates at melt temperatures above 240 °C. Production data from thin-wall tubing lines indicate that residual moisture above 0.20 % causes measurable reduction in burst strength after annealing because the molecular weight distribution shifts to lower chain length under hydrolytic attack. When ambient storage exceeds 60 % RH, pre-drying is mandatory rather than optional. Regrind from post-industrial runners and start-up scrap should be re-dried under the same conditions as virgin resin because it has a higher surface-to-volume ratio and absorbs moisture more rapidly during open storage.
Continuous service in hot air should be limited to 80–100 °C for heat-stabilized PA12, with short excursions to 150 °C permitted for less than 2 h when the component is unstressed. Above 120 °C in air, oxidation is the dominant degradation pathway, and the stabilizer package is progressively consumed. AECHVO is suitable for contact with aliphatic hydrocarbons, diesel fuel, hydraulic fluids, zinc chloride-free glycol coolants, and mineral oils at temperatures up to 80 °C. It should not be specified for service in concentrated mineral acids, oxidizing acids, phenols above 60 °C, or chlorinated solvents, which can dissolve or stress-crack the polyamide matrix. Dimensional stability under humidity is superior to PA6 and PA66 because PA12 absorbs roughly one-sixth to one-eighth of the water absorbed by PA6 at saturation. This property reduces the need for post-molding annealing for components that must hold tolerances across seasonal humidity changes. Certain amine-based additives may interfere with the heat-stabilizer package; compatibility should be verified through melt filtration and retention of tensile properties after heat aging.
Typical conversion applications for Arkema Rilsamid AECHVO include pneumatic tubing for air brake systems, protective cable sheathing, spiral-wrap sleeves, and injection-molded connectors or harness clips. In pneumatic tubing, the plasticized PA12 offers low-temperature flexural fatigue resistance and resistance to zinc chloride road salt, which can cause environmental stress cracking in PA6 and PA66. Extrusion lines for 12 mm outside diameter tubing with 1.5 mm wall thickness operate at linear speeds of 30–80 m/min, depending on downstream calibration. The extrudate is cooled in a water trough at 20–40 °C, and residual shrinkage is controlled by in-line annealing at 90–110 °C for 15–30 s before winding. Air brake tubing specifications such as SAE J844 or ISO 7628 require production-validation testing on finished assemblies; the resin alone does not confer compliance without system-level burst, adhesion, and thermal-aging tests.
| Framework | Reference | Assessment basis |
|---|---|---|
| REACH SVHC declaration | Regulation (EC) No 1907/2006 | No SVHC above 0.1 % w/w declared |
| RoHS restricted substances | Directive 2011/65/EU | No restricted substance above threshold |
| US food-contact resin status | FDA 21 CFR 177.1500 | Applies to PA12 resin; final article testing required |
| EU food-contact framework | Regulation (EU) No 10/2011 | Migration testing on final article required |
| Outdoor weathering screening | ISO 4892-2 | Validation required for UV-exposed articles |
Material substitution should be validated through ISO 527-1/-2 tensile tests on production samples and ISO 1133-1:2022 melt checks after 100 h of continuous extrusion to confirm viscosity retention. Differences in plasticizer package mean that AECHVO should not be intermixed with unplasticized Rilsamid PA12 regrind at levels above 10 % without re-qualification of flexibility, burst resistance, and low-temperature impact performance.
