| HS Code | 757071 |
| Material | EOS FR-106 Nylon 11 |
| Density | 1.03 g/cm³ |
| Tensile Modulus | 1700 MPa |
| Tensile Strength | 47 MPa |
| Elongation At Break | 35% |
| Flexural Modulus | 1300 MPa |
| Charpy Impact Strength Unnotched | 35 kJ/m² |
| Charpy Impact Strength Notched | 5 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 150 °C |
| Melting Point | 186 °C |
| Flammability Rating Ul 94 | V-0 |
| Water Absorption | 0.7% |
As an accredited EOS FR-106 Nylon 11 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | EOS FR-106 Nylon 11 is supplied in sealed, moisture-proof drums. Quantity: 10 kg per container for additive manufacturing use. |
| Container Loading (20′ FCL) | 20′ FCL: drum-packed EOS FR-106 Nylon 11, palletized, secured, ventilated, dry, away from ignition sources and moisture. |
| Shipping | EOS FR-106 Nylon 11 ships as non-hazardous polyamide powder. It is not regulated as dangerous goods for road, rail, sea, or air transport when packed in sealed original containers. Keep dry, protect from heat/open flames, ground containers during handling to avoid static accumulation, and label as nylon powder. |
| Storage | Store EOS FR-106 Nylon 11 in its original, tightly sealed container in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Protect from moisture and humidity to prevent degradation. Keep separated from incompatible materials, foods, and oxidizers. Avoid dust accumulation; handle with care to minimize static discharge and contamination. |
| Shelf Life | Shelf life is typically 12 months from manufacture when stored unopened in a dry, cool environment. |
In automotive fuel-system extrusion, EOS FR-106 Nylon 11 is specified for multi-layer tube constructions where underbody routing exposes the line to both evaporative emission limits and localized radiant heat. The grade is normally processed as the base resin at 100 phr, with an antistatic carbon black masterbatch added at 2–4 wt% and a low-slip processing package at 0.1–0.3 wt%; if post-industrial regrind is introduced, the fraction is maintained below 15 wt% to preserve burst strength and zinc-chloride stress-crack resistance. Downstream extrusion employs a single-screw extruder with an L/D ratio of 30:1 and a barrier screw, with barrel temperatures from 210 °C at the feed throat to 245 °C at the die, vacuum sizing to a roundness tolerance of ±0.05 mm, and a closed-loop melt pump to limit pressure variation to ±0.3 MPa. Moisture control is critical: pellets are pre-dried at 80–90 °C to below 0.02% moisture before extrusion, because higher residual moisture reduces melt viscosity and creates surface splay in thin-wall tube. Production-scale failure modes include melt fracture when die temperature falls below 220 °C and thermal yellowing when melt temperature exceeds 255 °C for more than 10 min residence time. Compliance is assessed under SAE J2260 for permeation, ISO 19013-1 for fuel hose construction, and SAE J1645 for system-level fuel-line evaluation; underhood fire exposure is additionally screened against UL 94 V-2 on cut sections. Terminal finished products include fuel feed lines, evaporative vapor return lines, and quick-connect fittings where low fuel permeation and flame-retarded outer layers are required. Published data for the exact permeation coefficient of FR-106 in this multi-layer configuration are limited; qualification on the target line is required before substituting a plasticized PA12 tube compound.
Offshore hydraulic control lines and chemical injection tubes require the pressure sheath to retain dimensional stability when coiled, payed out from reels, and exposed to fire-test conditions during topside installation. FR-106 Nylon 11 is extruded as the inner liner in unbonded flexible pipe or as a stand-alone hydraulic control tube at 100 phr, with a hydrolysis-resistant stabilizer package at 0.2–0.5 wt% and carbon black at 2.5 wt% for UV and oxidative protection. No external plasticizer is required for coil set memory because the nylon 11 backbone retains cold flexibility without the migration risk associated with monomeric plasticizers. Extrusion is performed on a single-screw machine with 24:1–30:1 L/D and a grooved feed section, melt temperature 220–250 °C, and vacuum sizing in a closed water bath; line speed is set to maintain a residual hoop stress below 10% of tensile yield after coiling. At the die head, backpressure is normally maintained below 25 MPa, while melt pump suction pressure is held above 5 MPa to avoid cavitation-induced voids. Batch-to-batch variance becomes visible as ovality greater than 0.1 mm or as axial crack initiation during the −20 °C coil reeling test. Qualification is governed by API 17J and ISO 13628-2 for unbonded flexible pipe components, with fire exposure evaluated under ISO 15540 and ISO 15541 for fire-resistant marine hoses and tubular assemblies; topside materials are also screened against NORSOK M-710 for non-metallic sealing and polymer components in offshore service. Terminal downstream products include subsea hydraulic control lines, methanol injection tubing, chemical dosing lines, and top-tensioned riser hydraulic conduits. The operational boundary is moisture uptake during storage: RH above 60% requires resealing of gaylord liners or pre-drying before extrusion to avoid hydrolysis-induced viscosity loss.
Electrical vehicle high-voltage harness protective conduits produced from FR-106 Nylon 11 are characterized by the combination of low-temperature impact and flame retardance required for routing along the underbody and through the battery enclosure. The formulation is run as a 100 phr compound; black UV masterbatch is added at 0.5–1.0 wt% only when color coding for outdoor exposure is required, and regrind from start-up scrap is limited to 20 wt% to minimize reduction in relative tracking index. Downstream corrugated-tube extrusion uses a single-screw extruder with L/D 28:1, a corrugator with vacuum-assisted forming dies, melt temperature 225–250 °C, and forming air pressure 0.1–0.3 MPa; injection molding of connector shells uses a clamp force of 800–1,200 kN per cavity for multi-pin HV housings. Molded shell weld lines are inspected ultrasonically because flame-retarded nylon 11 can exhibit reduced knit-line strength when fill speed exceeds 50 mm/s in thin bosses. Compliance is anchored to ISO 6722-1 for road-vehicle cable dimensions and abrasion, LV 112 for German OEM high-voltage cable harness requirements, UL 94 V-0 at 0.8 mm for flame-retardant classification, and ISO 14572 for marking and durability of protective conduits. Terminal finished parts include straight corrugated conduits, split wrap tubing, HV connector shells, and busbar isolation brackets. Compounding with amine-terminated impact modifiers should be avoided because premature amine exchange on the nylon 11 backbone reduces molecular weight and lowers weld-line strength in molded shells.
Pneumatic brake tubing made from FR-106 Nylon 11 is accepted where railway and heavy-truck air systems require cold-impact toughness down to −40 °C without external plasticizer migration to the tube surface. The extrusion formulation uses 100 phr resin, a process aid at 0.1 wt%, and no carbon black unless the tube is destined for external rail-car routing. Processing on a single-screw extruder at 24:1 L/D with a polyolefin-style screw and water-ring vacuum sizing produces OD tolerances of ±0.03 mm at line speeds up to 80 m/min. Terminal products include coiled tractor-trailer air-brake tubing, straight railway brake spools, and push-to-connect pneumatic control tubes. Compliance is verified under SAE J844 for air-brake tubing, ISO 7628 for thermoplastic tubing used in vehicle air systems, and FMVSS 571.106 for compressed-air brake lines. The material should be pre-dried at 80 °C for 4–6 h to below 0.02% moisture, because excess moisture creates microvoids at the ID/OD surfaces that degrade burst pressure.
Cable ties and harness clips injection molded from FR-106 Nylon 11 are used when installation occurs in unheated factory areas or outdoor enclosures where nylon 66 parts fracture below −20 °C. The compound is molded at 100 phr, with a color masterbatch at 2 wt% and regrind limited to 10 wt%; no additional flame-retardant package is added at the press. Molding machines are set to melt temperature 230–250 °C, mold temperature 40–80 °C, injection pressure 80–120 MPa, and hold pressure 60–80% of peak injection pressure to avoid sink marks in the ratchet head. Compliance is documented under UL 62275 and IEC 62275 for cable management systems, UL 94 V-0 at 0.8 mm for flame-retardant classification, and IEC 61340-5-1 where static-dissipative behavior is not required. Terminal finished products include two-piece releasable cable ties, ratchet cable ties, fir-tree harness clips, and edge-mount retainers. The operational boundary is mold residence time: keep melt residence below 8 min at 240 °C to prevent discoloration and loss of impact.
Flame-retardant nylon 11 powder is prepared for selective laser sintering of rail and aerospace interior brackets where EN 45545-2 and NFPA 130 fire propagation and smoke density requirements exclude unfilled nylon 12 parts. The powder bed is mixed at a refresh ratio of 50:50 virgin to recycled powder, with dry-flow additive at 0.1–0.2 wt% and no additional FR masterbatch when the grade is supplied as a fully compounded powder. SLS machines operate with a build chamber temperature of 170–185 °C, a laser power of 30–50 W, scan speed 8–12 m/s, layer thickness 0.10–0.12 mm, and a warm-up phase of 90–120 min to stabilize bed temperature before first fusion. Powder-bed temperature variation greater than ±3 °C across the build area produces warpage at part corners and must be corrected before production lots are released. Compliance is tested under EN 45545-2 R7/HL3 for rail interior non-structural components, NFPA 130 for transit vehicle flammability and smoke emission, ASTM E662 for specific optical density, and ASTM D638-14 for layer-direction tensile properties. Terminal downstream products include air duct brackets, seat-back enclosures, cable clamp blocks, and door jamb spacers. Published data for the specific fatigue performance of FR-106 in SLS at 0.10 mm layer height are limited; manufacturers must run component-level qualification batches to verify layer-bond strength before replacing machined aluminum brackets.
| Downstream sector | Standard designation | Test method or processing boundary | Terminal part class |
|---|---|---|---|
| Automotive fuel and vapor lines | SAE J2260, ISO 19013-1, SAE J1645 | Permeation, zinc-chloride stress-crack resistance, pre-dry <0.02% moisture | Fuel feed lines, vapor return lines, quick connectors |
| Offshore control lines | API 17J, ISO 13628-2, ISO 15540, NORSOK M-710 | Fire-resistant tube qualification, coil reeling at −20 °C, ovality <0.1 mm | Hydraulic control lines, methanol injection tubes, chemical dosing lines |
| EV high-voltage conduits | ISO 6722-1, LV 112, UL 94 V-0, ISO 14572 | Flame classification at 0.8 mm, weld-line inspection, corrugator vacuum forming | Corrugated conduit, split wrap tubing, HV connector shells, busbar isolators |
| Pneumatic brake systems | SAE J844, ISO 7628, FMVSS 571.106 | Cold-impact at −40 °C, OD tolerance ±0.03 mm, burst pressure after moisture control | Air-brake tubing, railway brake spools, push-to-connect pneumatic tubes |
| Cable management | UL 62275, IEC 62275, UL 94 V-0, IEC 61340-5-1 | Sub-zero installation, melt residence <8 min at 240 °C | Releasable cable ties, ratchet cable ties, fir-tree clips, edge-mount retainers |
| Rail interior SLS parts | EN 45545-2 R7/HL3, NFPA 130, ASTM E662, ASTM D638-14 | Layer thickness 0.10–0.12 mm, powder-bed temperature variation <±3 °C | Air duct brackets, seat-back enclosures, cable clamp blocks, door jamb spacers |
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EOS FR-106 Nylon 11 is a laser-sintering powder based on polyamide 11 and formulated to provide flame-retardant performance in powder-bed additive manufacturing. The material is intended for use on EOS P 396 and EOS P 770 systems with a layer thickness of 0.10 mm or 0.12 mm. The semi-crystalline PA11 matrix exhibits a melt endotherm typically between 186 °C and 201 °C, and the flame-retardant package is halogen-free according to the manufacturer’s published formulation. Finished sintered coupons are rated UL 94 V-0 at 1.5 mm wall thickness when tested according to IEC 60695-11-10. The powder requires moisture control below 0.2 wt% before processing; residual moisture is commonly verified by ISO 15512. Components produced from FR-106 Nylon 11 are specified for airworthiness interior parts, electrical housings, and ducting where vertical burn resistance, low density, and moderate impact strength are required simultaneously.
Vertical burn performance is thickness-dependent. At 1.5 mm, FR-106 can achieve UL 94 V-0; at 0.8 mm, published results may shift to V-2 or fail because the char front is no longer stable and melt dripping becomes more pronounced. The test is executed according to IEC 60695-11-10 or UL 94, using a 50 W burner flame applied for 10 s twice per specimen. For a V-0 classification, afterflame time must not exceed 10 s per specimen, total afterflame time for five specimens must not exceed 50 s, and cotton ignition is not permitted. Thin ribs, snap fingers, and bosses below 1.5 mm should therefore be avoided when certification is required. If wall thickness cannot be increased, the part should be evaluated in the worst-case build orientation because z-axis layer boundaries can create capillary paths that accelerate flame propagation. This failure mode has been observed on SLS production lines where thin-wall sections were placed near the build-platform edge, where bed temperature gradients can reduce interlayer fusion and increase local porosity.
Aerospace cabin air-ducting applications subject to FAR 25.853 benefit from the PA11 base’s ductility and the halogen-free flame-retardant system. The material has been evaluated in 12-second vertical burn testing according to FAR 25.853(a) Appendix F Part I at 1.5 mm; part-level qualification programs also require ASTM E662 smoke density and, in some airframe specifications, BSS 7239 toxicity testing. Air duct geometries are often shelled to a uniform wall thickness of 2.0 mm to accommodate draft angles and sealing surfaces. The sintered duct is sealed with a polyamide-compatible epoxy or solvent-welded at flanges because laser-sintered surfaces retain limited open porosity. Sealing is verified by pressure decay testing under cabin differential pressure rather than by visual inspection alone. The density of FR-106 is approximately 1.08 g/cm³; replacement of PA 3200 GF in the same geometry can reduce duct mass by approximately 15%, although the mass reduction depends on wall-thickness redesign and flange geometry.
FR-106 Nylon 11 is processed with a bed temperature that follows the recrystallization behavior of polyamide 11. The powder shows a glass transition near 42 °C and a melt peak near 188 °C; the operational bed setpoint is therefore maintained in the 165–175 °C range to avoid premature crystallization while limiting part growth. Parameter sets for the EOS P 396 are supplied with a layer thickness of 0.12 mm; laser energy density is adjusted to achieve sufficient melt-pool depth for interlayer bonding. Production operators report that bed temperature variation greater than ±2 °C across the build platform produces measurable differences in part density and z-axis tensile strength. The outer edges of the build envelope may be 3–5 °C cooler than the center, so critical parts should be positioned near the center of the build platform. Used powder refresh ratios of 40–50 wt% virgin material are typical for production runs; powder that has undergone repeated thermal cycles shows increased yellowness and reduced melt mass-flow rate measured by ISO 1133-1:2022 at 235 °C with 2.16 kg. Batch-to-batch variance in the flame-retardant additive content can shift the UL 94 rating if the blend deviates from the specified ratio.
FR-106 Nylon 11 differs from unfilled PA 1101, unfilled PA 2200, and glass-filled PA 3200 GF in elongation, stiffness, and flammability. The flame-retardant particles act as stress concentrators, reducing elongation at break relative to unfilled PA 1101. The tensile modulus is higher than unfilled PA 2200 in some published datasets but remains below PA 3200 GF. The glass-filled material is selected for stiffness-critical brackets, whereas FR-106 is selected for thin-wall flame-retardant covers, ducts, and electrical housings where ductile fracture at 5–10% elongation is acceptable. The following values are consolidated from published datasheets and material literature; lot-specific values should be verified against the current manufacturer’s certificate.
| Property | FR-106 Nylon 11 | PA 1101 | PA 2200 | PA 3200 GF |
|---|---|---|---|---|
| Density, ASTM D792 | 1.08 g/cm³ | 1.03 g/cm³ | 1.01 g/cm³ | 1.22 g/cm³ |
| Tensile modulus, ASTM D638 | 1760 MPa | 1600 MPa | 1650 MPa | 3200 MPa |
| Tensile strength, ASTM D638 | 43 MPa | 48 MPa | 48 MPa | 51 MPa |
| Elongation at break, ASTM D638 | 7% | 40% | 18% | 5% |
| Flexural modulus, ASTM D790 | 1800 MPa | 1500 MPa | 1500 MPa | 2800 MPa |
| HDT at 0.45 MPa, ASTM D648 | 155 °C | 181 °C | 86 °C | 176 °C |
| UL 94 rating | V-0 at 1.5 mm | HB | HB | HB |
Electrical housing applications often require UL 94 V-0 at 1.5 mm but may also require comparative tracking index CTI above 400 V measured by IEC 60112. FR-106 Nylon 11 has been qualified in production for low-voltage connector housings where the part must withstand 85 °C continuous operating temperature and 95% relative humidity for 96 h under IEC 60068-2-78. The sintered housing is annealed at 150 °C for 2 h in a nitrogen-purged oven to relieve residual stress and stabilize crystallinity. Sintered z-axis surfaces show higher roughness than injection-molded polyamide; press-fit holes are post-machined to H7 tolerance before contact insertion. In this application, unfilled PA 2200 is excluded because it is rated HB, while PA 3200 GF can crack during snap-fit assembly because its elongation at break is below 10%. FR-106 occupies the intermediate position: flame retardancy is achieved while retaining sufficient ductility for snap-fit insertion under controlled hole tolerances.
The compliance profile of FR-106 Nylon 11 is validated through a combination of material-level and part-level test standards. Material-level flammability is reported under UL 94 and IEC 60695-11-10. Airworthiness applications require additional certification evidence because material approval does not automatically confer part approval. The table below identifies the standard designations and the corresponding test focus for typical FR-106 applications.
| Standard | Test description | Typical acceptance criterion |
|---|---|---|
| UL 94 / IEC 60695-11-10 | Vertical burn of material coupons | V-0 at 1.5 mm |
| FAR 25.853(a) Appendix F Part I | 12-second vertical burn for aircraft interior materials | Self-extinguish within specified time |
| ASTM E662 | Smoke optical density | Part-specific Ds maximum |
| FAR 25.853(d) | Heat release rate by OSU calorimetry | 65 kW/m² peak, 65 kW·min/m² total |
| REACH | SVHC declaration | < 0.1 wt% per substance |
| RoHS 2011/65/EU | Restricted substances in electrical equipment | Compliant with Annex II limits |
Chemical exposure limits and incompatibilities observed on production lines determine the practical boundaries of FR-106 Nylon 11. Polyamide 11 is attacked by strong acids, phenol, and concentrated formic acid. Continuous immersion in aqueous solutions with pH below 2.0 or above 12.0 should be avoided unless application-specific testing demonstrates acceptable property retention. The flame-retardant system can hydrolyze in boiling water over extended exposure; wet processing should therefore be limited to 80 °C water or ultrasonic cleaning cycles not exceeding 30 min. The powder and sintered parts should not be combined with amine-based additives because primary amines can compete with the phosphorus flame retardant during melt processing and reduce char formation. Oxygen-scavenging or acidic post-processing agents are incompatible unless verified by part-specific burn testing. When painting or bonding, solvent selection is restricted to non-aromatic systems; toluene and xylene can cause stress crazing in thin walls. The material is supplied with a recommended maximum storage temperature of 30 °C and relative humidity below 60%; powder exposed to higher humidity is dried at 80 °C for 4 h in a desiccant dryer before loading into the EOS system. Batch certificates report melt mass-flow rate by ISO 1133-1:2022 and residual moisture by ISO 15512; batches with moisture above 0.2 wt% are rejected or re-dried.
