| HS Code | 782224 |
| Density | 1.03 g/cm³ |
| Melting Point | 186 °C |
| Tensile Strength At Break | 55 MPa |
| Elongation At Break | 300 % |
| Tensile Modulus | 1.4 GPa |
| Flexural Modulus | 1.2 GPa |
| Impact Strength Notched 23 C | 65 kJ/m² |
| Hardness Shore D | 72 |
| Water Absorption 24h At 23 C | 0.3 % |
| Water Absorption Saturation | 1.8 % |
| Thermal Conductivity | 0.24 W/(m·K) |
| Volume Resistivity | 10^14 Ω·cm |
As an accredited Omnia Plastica PA 11 Rilsan B factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Available in 25 kg moisture-protective bags, clearly labelled, ensuring safe handling and storage of Omnia Plastica PA 11 Rilsan B. |
| Container Loading (20′ FCL) | Load 20′ FCL with palletized bags of Omnia Plastica PA 11 Rilsan B; secure tightly, keep dry, ventilated, and contamination-free. |
| Shipping | Ship Omnia Plastica PA 11 Rilsan B as non-hazardous polymer granules. Keep in sealed, dry packaging away from moisture and direct sunlight. Avoid dust generation during handling. No special transport classification required, though standard protective measures against contamination and physical damage are recommended for safe, clean delivery. |
| Storage | Store Omnia Plastica PA 11 Rilsan B in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and moisture. Keep containers tightly sealed to prevent contamination and humidity absorption. Avoid prolonged UV exposure and strong oxidizers. Maintain moderate temperatures; no special hazardous storage required. Ensure good housekeeping practices. |
| Shelf Life | Shelf life is 24 months from production when stored unopened in original packaging in a cool, dry place. |
In compressed air brake circuits for heavy commercial trucks, buses, and semi-trailers, the thermoplastic tube material is qualified against SAE J844 and ISO 7628:2010, not merely selected for flexibility. The specification requires the extruded PA 11 Rilsan B tube to withstand burst-pressure retention at 100 °C after 72 h thermal aging and to pass low-temperature impact at −40 °C without shattering. The production compound is based on a Rilsan B base resin with 8–12 wt% monomeric or oligomeric plasticizer, 0.2–0.6 wt% hindered phenol stabilizer, and 2–3 wt% carbon black masterbatch for UV resistance. Drying before extrusion is performed in a desiccant dryer at 80 °C for 4 h to a moisture content of ≤0.08%, because residual moisture above this value causes viscosity hydrolysis and surface melt fracture. The tube is extruded on a single-screw extruder with a screw diameter of 45–75 mm and L/D 28:1, using a barrier screw and melt temperature 225–245 °C; the melt is shaped through a crosshead die and calibrated in a vacuum tank to an outside-diameter tolerance of ±0.05 mm. In production-scale troubleshooting, the most common failure mode is dimensional variance caused by variable puller tension and insufficient melt-pressure stability, not by resin degradation. The terminal finished products are coiled air brake tubing assemblies for truck-and-trailer brake systems, bus pneumatic door and suspension circuits, and heavy-duty off-road vehicle service brake circuits. The operational boundary is defined by plasticizer migration: at continuous underhood exposure above 120 °C, low-molecular-weight plasticizer species migrate to the tube surface and raise low-temperature brittleness, so the compound is not specified for engine-bay routing that lacks thermal shielding.
In unbonded flexible risers, flowlines, and jumpers, the extruded polyamide 11 pressure sheath is the only continuous polymeric barrier between the conveyed hydrocarbon stream and the steel structural layers, so qualification is anchored to API 17J and ISO 13628-2. The pressure sheath compound is specified as 100% virgin PA 11 Rilsan B with regrind content held at 0 wt%, because random regrind morphology disturbs melt homogeneity and creates interfacial discontinuities that function as initiation sites during rapid gas decompression following a shutdown. Depending on the design minimum temperature and required bending stiffness, the plasticizer content is adjusted between 0 wt% and 10 wt%; higher plasticizer loadings improve installation flexibility but increase gas permeation and reduce long-term hydrostatic strength. The extrusion process on a production line for a flexible pipe pressure sheath typically uses a 90–150 mm single-screw extruder with L/D 25–30, a melt temperature of 215–235 °C, and a crosshead die temperature of 210–225 °C; the sheath is applied over the interlocked carcass at a thickness of 5–12 mm and cooled in staged water zones to limit spherulite size. The terminal products include unbonded flexible risers for subsea production, water injection lines, gas lift lines, and flowline jumpers. The operational boundary under sour service is governed by the combination of temperature, H2S partial pressure, and water condensation; published qualification data for specific gas mixtures above 90 °C is limited, and laboratory material qualification using a representative production-scale extrusion thermal history is recommended before project approval.
In single-use and short-term intravascular catheter shafts, the extrusion specification for PA 11 Rilsan B is determined by the flexural modulus required for pushability and by the extractables profile required under ISO 10993-1:2018 and ISO 10993-18. The compound is formulated with 20–30 wt% barium sulfate radiopacifier, 70–80 wt% PA 11 base resin, and 0.2–0.5 wt% processing stabilizer; the barium sulfate content is not a filler tolerance issue but a traceability constraint because radiopacity must remain constant across the full distal tip length. The microextrusion line uses a 16–25 mm single-screw extruder with L/D 20:1–24:1, a melt temperature of 210–230 °C, and a multi-lumen die with a drawdown ratio of 1.5:1–2.5:1; the extrudate is quenched in water at 15–20 °C and later annealed at 120 °C for 2 h to relieve frozen-in orientation that otherwise causes kinking. The terminal finished device types are diagnostic catheters, introducer sheaths, ureteral access catheters, and short-term drainage catheters. The operational boundary is that the material is not qualified as a long-term implant beyond 30 days without additional chemical characterization and device-specific sterilization validation; ethylene oxide and gamma sterilization both reduce molecular weight, so post-sterilization tensile and lubricious coating adhesion must be verified on actual finished shafts rather than on compression-molded plaques.
Fluidized-bed coating of ductile iron and steel valve bodies transforms PA 11 Rilsan B from a granular resin into a pore-free protective layer without solvent carriers. The substrate is degreased, grit-blasted to Sa 2.5 in accordance with ISO 8501-1, and preheated to 250–350 °C; the preheat temperature is controlled because a substrate below 235 °C yields insufficient polymer coalescence, while a substrate above 350 °C generates visible yellowing from oxidation. The powder is 100% PA 11 Rilsan B with a particle-size distribution of 63–250 µm and a melt flow rate tested by ISO 1133-1:2022 at 235 °C under 2.16 kg; no liquid additives are introduced. The hot component is dipped into a fluidizing bed at an air pressure of 0.2–0.5 bar, then post-cured at 190–200 °C for 10–15 min to complete fusion. Final dry-film thickness is measured by ISO 2178 and specified between 200 µm and 500 µm; adhesion is checked with the cross-cut test method in ASTM D3359, and potable-water compliance is assessed under NSF/ANSI/CAN 61. Terminal finished product types include valve bodies, water meter housings, pump volutes, and flanged pipe fittings in municipal water systems. The operational boundary is continuous immersion in water above 80 °C, where the polyamide 11 layer loses hydrostatic strength and dimensional stability; exposure to water outside the pH range of 4–9 should be treated as an unqualified condition unless long-term immersion testing at the specific pH and temperature is available.
In gasoline fuel feed and vapor return lines for evaporative emissions compliance, PA 11 Rilsan B functions as an internal hydrocarbon barrier layer inside a multi-layer tube, not as the outer jacket material. The construction is qualified under SAE J2260, with sub-sections addressing permeation, burst, and cold impact, and the vehicle-level evaporative emission limits are set by EPA 40 CFR 86.1813 and the corresponding European evaporative emission standards. In a typical five-layer tube with a total wall thickness of 1.0–1.5 mm, the PA 11 Rilsan B barrier layer is 10–25 wt% of the total tube mass, a tie resin is 5–10 wt%, and a plasticized PA 12 or PA 612 outer layer is 65–85 wt%; the barrier layer is kept unplasticized to preserve its low hydrocarbon diffusion coefficient. The coextrusion line uses separate 30–45 mm single-screw extruders with L/D 25:1 for each polymer stream, a spiral mandrel die operating at 220–250 °C, and vacuum calibration followed by post-extrusion annealing at 120 °C. The terminal finished products are gasoline fuel feed lines, vapor return lines, filler neck tubes, and fuel-system quick-connector tubing for passenger cars and light commercial vehicles. The operational boundary is methanol-blended fuel above 15 vol%, which requires specific barrier material validation because alcohol absorption changes the barrier-layer diffusion path and can cause delamination at the tie-layer interface if the production line regrind content is not limited below 10 wt%.
In off-highway hydraulic hose constructions, the inner liner is extruded directly onto a flexible mandrel before steel-wire braiding, and the PA 11 Rilsan B liner must retain impulse strength after hot-oil aging. Qualification follows SAE J517 and ISO 18752, with impulse testing conducted under ISO 6803; the liner is specified at 0.2–0.6 mm wall thickness, and the compound contains 0–5 wt% plasticizer, 0.2–0.5 wt% antioxidant, and no mineral filler, because filler particles act as stress raisers under repeated pressure spikes. The extrusion operation uses a 30–60 mm single-screw extruder with L/D 25:1, melt temperature 210–230 °C, and a mandrel feed system that controls concentricity within ±0.02 mm; after cooling, the liner is braided with steel wire in two or four layers and then covered with a polyamide or polyurethane outer jacket. Terminal finished product types are spiral-braided hydraulic hoses for excavators, agricultural tractors, cranes, and mining equipment. The operational boundary is phosphate ester hydraulic fluids, which plasticize the PA 11 liner more aggressively than mineral oils and reduce burst retention; compatibility with water-in-oil emulsions must be verified at the specific operating temperature because high-water-content fluids reduce liner flex fatigue resistance at temperatures above 100 °C.
Competitive Omnia Plastica PA 11 Rilsan B 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!
Omnia Plastica PA 11 Rilsan B is an unfilled semi-crystalline polyamide 11 based on the Rilsan B molecular architecture. Each repeat unit carries one amide group for every eleven carbon atoms, a structure derived from 11-aminoundecanoic acid obtained from castor oil. The long methylene sequence reduces the concentration of hydrogen-bonding amide groups relative to PA 6 or PA 66, which lowers equilibrium moisture uptake and changes the dry-to-conditioned stiffness shift. The material is supplied as pellets, rod, plate, or custom-extruded profile depending on the converter. Because not all converted stock-shape geometries carry their own published certificate, the base Rilsan B resin datasheet remains the reference for missing values. The designation “Rilsan B” alone does not identify the additive package, heat stabiliser, carbon black level, or processing aid used in a particular lot; this information must be retrieved from the lot certificate.
Representative unfilled values include density of 1.03–1.05 g/cm³ under ISO 1183-1:2019 method A, melting temperature of 187–192 °C by differential scanning calorimetry under ISO 11357-3:2018, tensile yield strength of 35–45 MPa on type 1A specimens under ISO 527-2:2012, and flexural modulus of 1100–1500 MPa under ISO 178:2019. Notched Charpy impact at 23 °C is typically 4–8 kJ/m² under ISO 179-1:2010, and water saturation at 23 °C is approximately 1.8–2.0 % under ISO 62:2008. The dry glass transition temperature is commonly reported near 45 °C by ISO 11357-2:2020; absorbed water acts as a plasticiser and lowers the Tg, which explains the measurable modulus reduction in humid service.
The practical difference between PA 11, PA 12, and short-chain polyamides is often stated in terms of hydrogen-bond density and moisture response. PA 11 and PA 12 both possess long methylene sequences, but PA 11 has a higher renewable carbon fraction and a somewhat higher melting point. PA 6 and PA 66 have higher dry strength and stiffness, yet their higher amide density causes water absorption values from 8 % to 10 % at saturation, which drives seasonal dimensional change, modulus loss, and hydrolytic attack in hot-water systems. Table 1 lists representative technical datasheet ranges for unfilled resins; these are not lot-specific guarantees and are shown to support initial material selection.
| Property | PA 11 Rilsan B | PA 12 | PA 6 dry | Standard |
|---|---|---|---|---|
| Density | 1.03–1.05 g/cm³ | 1.01–1.02 g/cm³ | 1.13–1.14 g/cm³ | ISO 1183-1 |
| Melting temperature | 187–192 °C | 175–180 °C | 220–222 °C | ISO 11357-3 |
| Tensile yield strength | 35–45 MPa | 35–45 MPa | 75–85 MPa | ISO 527-2 |
| Flexural modulus | 1100–1500 MPa | 1100–1400 MPa | 2500–3000 MPa | ISO 178 |
| Notched Charpy, 23 °C | 4–8 kJ/m² | 5–8 kJ/m² | 5–7 kJ/m² | ISO 179-1/1eA |
| Water absorption, saturation | 1.8–2.0 % | 1.5–1.6 % | 9.0–10.0 % | ISO 62 |
These ranges are drawn from published resin datasheets and should not replace a certified lot test.
When the material is processed by melt extrusion, the acceptable temperature window is narrower than the melting point difference implies. A single-screw extruder with an L/D of 25:1 to 30:1 and a compression ratio of 2.5:1–3.0:1 is used for rod and plate; barrel zones are normally held between 220 °C and 260 °C. The feed throat is water-cooled below 70 °C to avoid premature melt bridging. Drying is mandatory to reduce residual moisture below 0.08 wt%, typically achieved for 4–8 h at 80 °C in dehumidified air with a dew point at or below −30 °C. A moisture level above 0.10 wt% at melt extrusion can produce surface splay, die-lip deposits, and hydrolytic viscosity loss. Melt temperature above 270 °C and residence time beyond 10 min are associated with yellowing, gel formation, and a measurable reduction in solution viscosity. For profile extrusion, a vented two-stage screw with a vacuum of −0.08 MPa gauge at the vent port is recommended; the vent must remain clear of polymer melt to avoid clogging.
Capillary rheometry under ISO 11443:2021 should be used to confirm the lot-specific flow curve before a new die is machined. Published data for the exact Omnia Plastica converted configuration can be limited, so the base Rilsan B curve at 230 °C and 250 °C serves only as an initial reference. Regrind addition up to 20 wt% is generally accepted when the melt volume-flow rate remains within ±15 % of the virgin value measured under ISO 1133-1:2022 at 235 °C/2.16 kg. On production single-screw lines, batch-to-batch variation is most often linked to residual moisture or mixed black and natural regrind rather than to the base resin itself. Injection moulding is performed with melt temperatures of 230–280 °C and mould temperatures of 40–80 °C; moulds below 40 °C can reduce cycle time but increase frozen-in stress in thick sections and reduce weld-line elongation.
Unfilled PA 11 is generally assigned a low-load continuous use range of −40 °C to 120 °C in neutral air, but the upper boundary is not a fixed material constant. Above 100 °C, oxidative degradation is time- and oxygen-dependent, and a 10 °C increase in exposure temperature may reduce available service life by roughly half in the presence of air. Accelerated ageing should be performed under ISO 188:2013, with thermal stability measured by ISO 11357-6:2018 when oxidation is the primary concern. A conservative design envelope for continuous dry exposure is 90–110 °C, with short-term excursions to 150 °C allowed only under minimal mechanical load. The product is incompatible with strong mineral acids, especially hydrochloric acid, and with strong oxidising agents. Amine-based heat stabilisers are sometimes used in industrial grades, but they are not recommended for food-contact or medical components unless specific migration testing is completed. The critical processing boundary is not the same as the critical service boundary: a part can be moulded at 250 °C without damage and still oxidise at 120 °C if oxygen access is high.
In unbonded flexible riser liners, PA 11 Rilsan B is assessed under API Specification 17J for unbonded flexible pipe. The liner is qualified by tensile tests to ASTM D638 and ISO 527-2 after hot wet ageing in produced water and hydrocarbon condensate. The product is selected because it resists blistering and cracking from rapid gas decompression better than many lower-melting polyamides, not because it has the highest short-time tensile strength. Published data for sour service above 60 °C with high H₂S partial pressure remain limited; supplier-specific validation under the actual inhibitor package is required. The failure modes of greatest concern are internal sheath collapse and slow crack growth driven by residual stress, both of which are tied to extrusion cooling rates. This is a deep-dive specification area where the processing record, stabiliser content, and viscosity number are typically reviewed lot by lot.
In fuel and vapour management components, PA 11 is evaluated by immersion testing under ISO 1817:2015. After 168 h in Fuel C at 40 °C, unfilled PA 11 commonly retains more than 80 % of tensile strength and shows volume swell below 10 %; exact values depend on the fuel batch, test temperature, and prior conditioning. Zinc chloride stress cracking is a recognised failure criterion for underbody clips and fasteners. In comparative testing using 50 % aqueous zinc chloride at 60 °C, PA 11 shows fewer stress cracks than PA 6 and PA 66 processed under similar moulding conditions. At −40 °C, notched Charpy testing under ISO 179-1/1eA typically remains above 5 kJ/m². These data support truck air-brake tubing, cable sheathing, and fluid connectors in cold-weather service, where a single brittle fracture is unacceptable.
Subsequently, when PA 11 Rilsan B stock shapes are machined into wear pads, rollers, and chain guides, the material’s lower equilibrium moisture uptake relative to PA 6 reduces post-machining dimensional movement in humid plants. Carbide tooling with positive rake angles is preferred because the unfilled grade is ductile and can produce built-up edge if cutting temperatures rise too high. Dry compressed-air cooling is usually sufficient for light finishing cuts; water-based cutting fluids should be avoided when immediate dimensional inspection is required because surface moisture absorption can temporarily alter measured dimensions. The reported dynamic coefficient of friction against steel under ASTM D1894 is commonly in the 0.25–0.35 range, which reduces stick-slip in conveyor guides. In wear-pad service under moderate bearing pressures, continuous surface temperature should remain below 110 °C to avoid local melting or creep. A ground steel counterface of Ra 0.2–0.4 μm is often recommended to limit abrasive wear. End-use ranking should use ASTM G133 pin-on-flat or ASTM G77 block-on-ring testing. Concentrated hydrochloric acid and boiling water service should be excluded unless explicit testing is performed.
The PA 11 base polymer may meet the compositional provisions of FDA 21 CFR §177.1500 for nylon resins and may be formulated for EU Regulation 10/2011, but this does not make every converted Omnia Plastica stock shape automatically compliant. Overall migration and specific migration limits must be tested on the final article. The renewable carbon content of unfilled PA 11 is usually above 90 % when measured by ASTM D6866-22; carbon-black or filled compounds can be lower because the measurement includes the entire formulation. RoHS 2011/65/EU and REACH EC 1907/2006 obligations depend on the pigment and additive package, not solely on the base resin. For medical or in-vitro diagnostic use, ISO 10993-5:2009 cytotoxicity and ISO 10993-1:2018 risk assessment must be performed on the finished article.
| Regulatory or sustainability area | Standard or regulation | Basis for specification |
|---|---|---|
| Food contact | FDA 21 CFR §177.1500; EU 10/2011 | Base resin compositional data plus migration testing on finished article |
| Biobased carbon | ASTM D6866-22 | Typically above 90 % for unfilled base resin |
| RoHS | 2011/65/EU | Restricted substances below threshold in homogeneous material |
| REACH | EC 1907/2006 | SVHC screening of full formulation |
| Cytotoxicity | ISO 10993-5:2009 | Final article extraction testing |
| Flammability | UL 94 | Unfilled PA 11 typically HB at 1.5 mm thickness |
In heavy commercial vehicle pneumatic tube bundles, PA 11 Rilsan B is qualified after cold impact at −40 °C and after pressure cycling across the −40 °C to +85 °C range. The product avoids the high moisture uptake of PA 6 in damp air-brake environments and retains the flexibility needed for coiled tube assemblies. A known operational boundary is copper-ion catalysis: if tube surfaces remain above 110 °C in contact with copper-containing brass fittings, oxidative chain scission can become the dominant degradation mode. For most room-temperature fluid handling and pneumatic circuits, the selection criterion is usually the combination of 0.7–0.8 % equilibrium moisture uptake at 23 °C/50 % RH, notched Charpy impact above 5 kJ/m² at −40 °C, and a continuous service ceiling near 110 °C in dry air.
