| HS Code | 750475 |
| Base Polymer | PA11 |
| Glass Fiber Content | 40% |
| Density | 1.44 g/cm³ |
| Melting Point | 185 °C |
| Tensile Modulus | 13000 MPa |
| Tensile Strength At Break | 170 MPa |
| Elongation At Break | 3% |
| Flexural Modulus | 11500 MPa |
| Flexural Strength | 230 MPa |
| Charpy Impact Strength Notched | 14 kJ/m² |
| Heat Deflection Temperature A | 175 °C |
| Heat Deflection Temperature B | 180 °C |
As an accredited Arkema Rilsan BMN G8 TLDA PA11-CD1 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Arkema Rilsan BMN G8 TLDA PA11-CD1 is supplied in 25 kg moisture-protective bags, ensuring safe handling and secure storage. |
| Container Loading (20′ FCL) | 20′ FCL container of Arkema Rilsan BMN G8 TLDA PA11-CD1, bio-based polyamide resin, packed in sealed bags on pallets. |
| Shipping | Ship Rilsan BMN G8 TLDA PA11-CD1 as non-hazardous plastic granules in sealed moisture-barrier bags on pallets. Keep dry, protected from humidity and direct sunlight, and avoid temperatures above 50°C. Standard dry van container or covered truck is suitable; no special dangerous-goods declaration required. |
| Storage | Store Rilsan BMN G8 TLDA PA11-CD1 in its original, unopened packaging in a cool, dry, well-ventilated area. Keep away from direct sunlight, heat sources, and moisture to prevent degradation or water absorption. Maintain moderate temperatures and low humidity, and use promptly after opening to preserve material performance. |
| Shelf Life | Shelf life is typically 2 years when stored unopened, in original packaging, in a cool, dry place. |
In fuel-system validation programs governed by SAE J1645 and SAE J2260, Arkema Rilsan BMN G8 TLDA PA11-CD1 is processed as a low-permeation inner layer because the low equilibrium moisture uptake of polyamide 11 preserves evaporative emission compliance after road-deicer splash exposure. The formulation addition ratio is 100 phr base resin for monolayer fuel vapor return lines; in three-layer coextruded tube constructions, the PA11 layer is specified at 18–22% of total wall thickness or positioned as the inner layer beneath an EVOH barrier. Regrind from edge trim is held at or below 15 wt% because published data for higher regrind loading in this specific grade is limited. Pre-drying is executed in a desiccant dryer at 80 °C for 4 h until moisture content is below 0.08% as measured by ISO 15512:2019 Method B. Processing then proceeds on a single-screw extruder with L/D 30:1, barrier screw compression ratio 2.8:1, barrel profile 210/220/235/245 °C, die temperature 245 °C, and vacuum calibration at −0.8 bar. Melt flow rate is verified against ISO 1133-1:2022 at 235 °C/10 kg to maintain die pressure within ±3 bar of baseline; production lines with hopper dew point above −20 °C have shown surface melt fracture and elevated permeation after thermal cycling. Terminal products include EVAP vapor return lines, fuel filler neck vent tubes, canister purge lines, and low-permeation fuel supply hoses installed in light-duty gasoline vehicles.
Dual compliance is obtained when BMN G8 TLDA is processed at 100 phr without added plasticizer; a PA11-carrier black masterbatch is introduced at 2–4 wt% only when black jacket color is specified because published data for non-PA11 carrier masterbatch above 3 wt% in this grade is limited, so carrier compatibility is validated by SAE J844 burst testing at 80 °C. Extrusion on an L/D 28:1 single-screw line with compression ratio 2.8:1 and screen pack 40/60/80 mesh uses melt temperature 230–245 °C and a vacuum calibration tank at −0.6 bar; post-extrusion heat setting at 140 °C for 5 min reduces axial shrinkage to the dimensional stability required by SAE J844. Wall-thickness control uses laser diameter gauging with 0.01 mm resolution because ovality above 0.1 mm creates fitting leakage under 10 bar pulse testing. Terminal product types include coiled trailer air brake lines, chassis pneumatic control harnesses, and heavy-duty truck gladhand protection tubes. Continuous service above 80 °C under full SAE J844 pressure is not recommended without validation, and direct contact with phosphate-ester hydraulic fluids is avoided.
When a subsea control umbilical requires a polyamide outer sheath with documented resistance to methanol, glycol and sour gas condensate, Arkema Rilsan BMN G8 TLDA PA11-CD1 is processed as the sheath compound under API 17E / ISO 13628-5:2009 and API 17J / ISO 13628-2:2006. The base resin is used at 100 phr; for UV-exposed outer layers in marine splash zones, a PA11-carrier carbon black masterbatch is incorporated at 3.0–4.5 wt%, and dispersion quality is verified by pressure filter test because un-dispersed carbon black agglomerates act as stress concentrations in dynamic sheath bending. Masterbatch let-down is performed on a co-rotating twin-screw extruder with 44 mm screw diameter and L/D 40:1, while the sheathing line uses a 90 mm single-screw extruder with L/D 30:1, melt temperature 240 °C, and a water trough temperature of 60 °C to reduce residual stress. Closed-loop wall-thickness control is required because batch-to-batch MFR variance of ±1.5 g/10 min at 235 °C/10 kg as measured by ISO 1133-1:2022 can shift wall thickness by ±0.2 mm on a 50 mm OD sheath; spark testing at 15 kV after extrusion verifies pinhole-free coverage. Terminal applications include static and dynamic control umbilical outer sheaths, flying leads, and subsea distribution units. Prolonged immersion in concentrated sulfuric acid is not recommended, and methanol-rich fluids require additional qualification by API 17J fatigue testing.
Extrusion of PA11-CD1 for SCR urea feed lines uses 100 phr base resin without plasticizer addition because low-molecular-weight plasticizer extraction into AUS 32 urea solution is an operational boundary; where a black outer layer is required, 2–5 wt% PA11-carrier carbon black masterbatch is metered at the throat. Pertinent compliance standards are ISO 22241-3:2019 for handling and materials compatibility and ISO 22241-4:2019 for refilling interface components. Processing on a L/D 30:1 single-screw extruder uses barrel temperatures from 215 °C to 245 °C, vacuum calibration at −0.7 bar, and post-extrusion annealing at 120 °C for 2 h to relieve orientation stresses before urea frost cycling. Low-temperature impact is evaluated by ISO 179-1 Charpy notched testing at −40 °C after conditioning to ISO 62:2008 water uptake; tensile properties are verified by ISO 527-2 at 50 mm/min. Terminal product types include DEF feed and return lines, tank vent lines, and dosing module supply lines for selective catalytic reduction systems. Continuous exposure to methanol above 15 wt% is not recommended unless validated by immersion testing.
Industrial pneumatic control tubing made from BMN G8 TLDA is processed at 100 phr on a 45 mm single-screw line with L/D 28:1, melt temperature 220–235 °C, and vacuum calibration to ±0.05 mm wall tolerance, producing push-in-fitting air lines rated under ISO 14743:2004 and ISO 4414:2010. No plasticizer is added because the TLDA lubrication package is sufficient for continuous 10 bar air service; terminal products include robot dress-pack conduits and automated assembly cell air lines, while contact with phosphate-ester hydraulic fluids is excluded unless line flushing validation is performed.
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Arkema Rilsan BMN G8 TLDA PA11-CD1 is a laser-sintering-grade polyamide 11 powder supplied with controlled particle size distribution, melt behaviour, and recycled carbon content. The base polymer is polyamide 11 derived from castor oil; bio-based carbon is typically reported above 98 % according to ASTM D6866. The product is classified within ISO/ASTM 52900 as a thermoplastic feedstock for polymer powder bed fusion, not as a filament or coated granular feedstock. Bulk density is typically 0.45 g/cm³ to 0.55 g/cm³ by ISO 60, and tapped density reaches approximately 0.55 g/cm³ to 0.65 g/cm³ when measured under standard powder-tap conditions. The CD1 suffix identifies a specific commercial configuration within the BMN G8 TLDA family; the exact lot-specific certificate of analysis should be consulted for any specification invoked in a controlled document.
Unlike PA6 and PA66, the amide density of PA11 is lower, giving reduced equilibrium moisture uptake and a less severe glass-transition shift in humid service. Saturated water absorption of unfilled PA11 is approximately 1.8 % to 2.5 % by ISO 62, compared with 2.8 % to 3.5 % for PA66 under equivalent immersion conditions. This difference supports dimensional stability in condensation-prone enclosures and fluid-handling parts, but it does not eliminate the need for powder drying before laser sintering.
The sintering window is defined by differential scanning calorimetry according to ISO 11357-3. The melting peak for this PA11 family is typically 187–189 °C, and the recrystallization exotherm on cooling appears near 152–155 °C. A stable powder bed requires the build chamber temperature to sit above the recrystallization onset but below the melt onset, generally 165–185 °C for machine platforms equipped with infrared lamps and CO2 laser optics. If the bed temperature drifts below 160 °C, laser-densified layers can curl because the molten region cools too rapidly through the recrystallization interval; surface defects then propagate as layer-to-layer thickness variation. If the bed temperature exceeds 185 °C, near-melt agglomeration reduces powder flowability and can damage the recoater blade or produce hard lumps in the overflow bin.
On systems using a 30–65 W CO2 laser operating at 10.6 µm, layer thicknesses of 100–120 µm are commonly specified. The depth of fusion must be controlled to approximately one layer thickness to prevent under-sintering or excessive downward remelting. Scan strategy, laser power, scan speed, and interline spacing are machine-dependent; no single energy-density value transfers across resin lots without recalibration. Chamber atmosphere is normally inerted to maintain an oxygen concentration below 2 % by volume to reduce oxidative yellowing and melt degradation. On production-grade SLS lines with automated powder management, the feed hopper is usually maintained at 30–50 °C before dosing, and the process chamber is held at low positive pressure to exclude moisture-laden air. Published data for the CD1 configuration is limited for machine-specific thermal mapping; thermal camera verification across the build area is recommended when the platform uses a single-point infrared pyrometer.
Mechanical data for laser-sintered PA11 are anisotropic. In the XY build plane, tensile testing according to ISO 527-2 on specimens prepared per ISO/ASTM 52921 typically reports tensile strength in the 45–52 MPa range, tensile modulus from 1200 MPa to 1500 MPa, and elongation at break from 25 % to 50 %. In the build direction, tensile strength is commonly 10–30 % lower and elongation at break decreases by up to 50 % relative to XY because interlayer fusion is incomplete at melt boundaries. The material is selected over higher-modulus PA12 SLS powders when low-temperature ductility and snap-fit movement are dominant failure modes; flexural modulus measured by ISO 178 is generally 1000–1300 MPa, lower than some stiffness-optimized PA12 powders but combined with higher strain-at-break values. The table below compares representative published ranges for the BMN G8 TLDA family, a typical PA12 laser-sintering powder, and an unfilled PA11 injection grade.
| Property | Rilsan BMN G8 TLDA PA11-CD1 | Sintered PA12 powder | PA11 injection/extrusion grade |
|---|---|---|---|
| Density by ISO 1183-1 | 1.04 g/cm³ | 1.01 g/cm³ | 1.04 g/cm³ |
| Tensile strength by ISO 527-2 | 45–52 MPa | 45–50 MPa | 50–60 MPa |
| Tensile modulus by ISO 527-2 | 1200–1500 MPa | 1500–1800 MPa | 1300–1600 MPa |
| Elongation at break by ISO 527-2 | 25–50 % | 15–25 % | 50–200 % |
| Flexural modulus by ISO 178 | 1000–1300 MPa | 1200–1500 MPa | 1000–1400 MPa |
| Notched Izod impact by ISO 180/A | 4–8 kJ/m² | 3–6 kJ/m² | 6–15 kJ/m² |
| HDT at 0.45 MPa by ISO 75-2/B | 155–170 °C | 160–175 °C | 160–175 °C |
| Saturated water absorption by ISO 62 | 1.8–2.5 % | 1.5–2.0 % | 1.8–2.5 % |
Values are representative published ranges for dry, unfilled resin families; CD1 lot-specific values should be obtained from the Arkema certificate of analysis. SLS values are reported in the XY orientation unless otherwise noted, and orientation-dependent loss in the Z direction is not reflected in the table.
Polyamide 11 absorbs water by hydrogen bonding at amide sites, and powder-bed fusion is especially sensitive to moisture because vapor expansion occurs at the melt front. PA11 grades in this family are typically supplied with residual moisture below 0.15 % by weight; ISO 15512 Karl Fischer titration is the accepted method for verification. If powder moisture exceeds 0.15 %, steam-induced porosity and weak interlayer fusion are commonly observed on sintered test coupons. Pre-drying at 80 °C for 10–12 h in a desiccant-bed drier is commonly specified for PA11 powders when exposed to ambient air above 60 % relative humidity. Over-drying below 0.05 % moisture should be avoided; electrostatic charging during recoating can become severe in very dry powder handling, leading to non-uniform layer density. The powder should not be mixed with talc-based flow agents unless specifically listed in the supplier technical bulletin, because external flow aids migrate to the surface and can reduce interlayer adhesion.
Against PA12 laser-sintering powders, the Rilsan BMN G8 TLDA PA11-CD1 grade operates at a 10–15 K higher bed temperature and requires a wider thermal guard band. The principal offset is a higher bio-based carbon fraction, lower saturated water uptake than PA6 or PA66, and a more ductile response in the XY plane. The lower amide density of PA11 relative to PA6 or PA66 also reduces the long-chain order gradient and yields a glass-transition temperature typically near 45 °C by ISO 11357-2, which affects part stiffness above this boundary but preserves impact behaviour below 0 °C. In comparison with extruded or injection-moulded PA11, the laser-sintered product retains interlayer remnants that act as microstructural discontinuities. Elongation in the build direction and fatigue resistance are therefore lower than in fully fused injection-moulded parts. This is an inherent limitation of polymer powder bed fusion, not a failure of the CD1 resin chemistry.
The material is typically used for prototype and short-run functional parts in automotive fluid handling, aerospace interior clips and housings, and medical device development where the combination of ductility, chemical resistance, and renewable carbon content is part of the specification. It has been evaluated on SLS equipment with a 30–65 W CO2 laser and 100–120 µm layer thickness; service bureaus commonly report reclaimed-powder refresh ratios between 30 % and 50 %, but this must be revalidated for each machine and part orientation. Because the material does not carry a UL 94 V-0 rating in all colours and thicknesses, use in direct flame-contact electrical housings requires a separate flammability qualification. Heavy-metal content is generally below RoHS Directive 2011/65/EU thresholds, but certificates of analysis are necessary for controlled electronics applications.
Post-build finishing includes glass-bead blasting to remove partially fused powder; the resulting surface carries a matte appearance and microporosity. Dyeing in black or dark colours is possible because PA11 accepts acid dyes, but dyeing agents can plasticize the amorphous phase and should be validated against ISO 527-2 tensile properties before release. Food-contact status for Rilsan PA11 materials may be issued under EU Regulation 10/2011 and FDA 21 CFR 177.1500 for specific grades; the CD1 sintered powder requires migration testing because surface porosity differs from injection-moulded parts. Chemical resistance follows the general polyamide 11 profile, with prolonged exposure to concentrated mineral acids, strong oxidizing agents, or phenolic solvents at elevated temperature capable of producing surface attack and molecular weight reduction.
