PA11 FR (Flame-retardant PA11 powder)
Flame-retardant grade
also Rilsan
Specify for aircraft interior, rail and electrical enclosure parts needing V-0 / FAR 25.853 compliance.
Values for the FR condition
Other PA11 grades and fills
PA11 is listed in 17 conditions; see the grade overview at PA11.
- COND
- FR
- ESD
- GF
- Arkema Rilsan Invent Natural
- EOS PA 1102 black
- EOS PA 1101 ClimateNeutral
- Formlabs Nylon 11
- EOS PA 1101
- Forward AM Ultrasint PA11
- HP PA 11
- HP PA 11 Gen2
- Sinterit PA11 Onyx
- CF
- Formlabs Nylon 11 CF
- Sinterit PA11 CF
- Forward AM Ultrasint PA11 Black CF
Compare all 17 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Conditioned | PA11 moisture-conditioned to equilibrium at 50% RH: water plasticizes the amide phase, lowering modulus and strength while raising ductility and impact toughness. | 36 | 45 | 120 | 72 Shore D |
FRThis page Flame-retardant PA11 powder | Specify for aircraft interior, rail and electrical enclosure parts needing V-0 / FAR 25.853 compliance. | 36 | 40 | 15 | 76 Shore D |
Static-dissipative / conductive-filled PA11 powder | For electronics handling trays, fuel-system components and fixtures requiring controlled surface resistivity. | 38 | 44 | 15 | 77 Shore D |
Glass-bead / glass-fiber filled PA11 powder | Use when stiffness, dimensional stability and elevated-temperature rigidity matter more than ductility. | — | 42 | 6 | 82 Shore D |
SLS powder | — | — | 45 | 45 | 77 Shore D |
SLS powder | — | — | 48 | 30 | — |
SLS powder | — | — | 48 | 45 | — |
Formlabs Nylon 11 Powder · SLS powder | A bio-based, highly ductile PA11 powder for flexible, impact-resistant functional and medical parts. | — | 49 | 40 | — |
SLS powder | — | — | 50 | 30 | 75 Shore D |
SLS powder | — | — | 52 | 28 | — |
HP 3D High Reusability PA 11 · MJF powder | A ductile bio-based PA 11 for impact-resistant functional parts, living hinges, and flexible production geometries. | — | 52 | 50 | 80 Shore D |
HP 3D High Reusability PA 11 Gen2 · MJF powder | A second-generation ductile bio-based PA 11 for repeatable final-use production with improved powder efficiency. | — | 52 | 35 | — |
SLS powder | — | — | 55 | 31.6 | 76 Shore D |
Carbon-fiber reinforced PA11 powder | Highest stiffness-to-weight printed PA11; for jigs, brackets and motorsport parts where deflection must be minimized. | 60 | 65 | 5 | 82 Shore D |
Formlabs Nylon 11 CF Powder · SLS powder | A carbon-fiber-filled PA11 powder for strong, lightweight, impact-resistant parts that remain stable at elevated temperatures. | — | 69 | 9 | — |
SLS powder | — | — | 81 | 24.5 | 81 Shore D |
SLS powder | — | — | 82 | 7 | — |
What is PA11 FR?
PA11 FR is PA11 in the FR grade — specify for aircraft interior, rail and electrical enclosure parts needing V-0 / FAR 25.853 compliance. PA11 FR has a yield strength of 36 MPa (5.22 ksi) and a tensile strength of 40 MPa (5.8 ksi) — weaker than 65% of polymer grades. Elongation at break is 15% and the elastic modulus is 2 GPa (0.29 Msi). PA11 FR has a density of 1.15 g/cm³ (0.0415 lb/in³), lighter than 57% of polymer grades. Its glass-transition temperature is 46°C (115 °F).
Advantages
- Conducts heat well — 0.28 W/m·K (0.162 BTU/hr·ft·°F), better than 79% of polymer grades
- Good UV / weathering resistance — 55/100, better than 77% of polymer grades
PA11 FR properties
Typical room-temperature values for PA11 FR; 26 are specific to this condition. Other listed values are PA11 reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
PA11 FR has a density of 1.15 g/cm³ (0.0415 lb/in³), lighter than 57% of polymer grades. Its glass-transition temperature is 46°C (115 °F).
Mechanical13
PA11 FR has a yield strength of 36 MPa (5.22 ksi) and a tensile strength of 40 MPa (5.8 ksi) — weaker than 65% of polymer grades. Elongation at break is 15% and the elastic modulus is 2 GPa (0.29 Msi).
Thermal11
PA11 FR is rated for continuous service to 85°C (185 °F). It conducts heat at 0.28 W/m·K (0.162 BTU/hr·ft·°F), better than 79% of polymer grades. Thermal expansion is 120 µm/m·K (66.7 µin/in·°F).
Electrical6
PA11 FR is an electrical insulator with a dielectric strength of 23 kV/mm (584.2 V/mil) and a resistivity of 1×10¹² Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (82/100), better than 56% of polymer grades. UV resistance is good.
Sustainability3
Producing a kilogram of PA11 FR takes about 75 MJ of energy and emits 5 kg of CO₂ — less than 91% of polymer grades. Typical recycled content is 40%.
Manufacturability6
PA11 FR's machinability is good (60/100, better than 51% of polymer grades); weldability fair (45/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with PA11 FR
Is PA11 easy to machine?
Machines cleanly with sharp, high-rake tools and air cooling; tough and slightly gummy, so use climb milling and avoid heat build-up that closes drilled holes.
Can PA11 be welded?
Hot-plate, hot-gas, ultrasonic and laser welding all work on PA11; solvent bonding is impractical — use cyanoacrylate or two-part polyurethane/epoxy after plasma or abrasive prep.
Can PA11 be formed, bent or molded?
Print with bed ~185–190 °C and slow, uniform cooling to limit curl; reuse powder at 30–70% refresh, dry powder before use, and scale parts ~2.5–3.5% for sinter shrinkage.
What surface finishes work on PA11?
Bead blasting, vibratory tumbling, chemical vapor smoothing and dyeing (black/colored) work well; PA11's low moisture pickup keeps dyed and painted parts dimensionally stable, but UV-stabilized topcoat is advised outdoors.
PA11 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| flow/anti-caking additive (fumed silica)powder-bed processing aid | 0.05 – 0.5 | 0.2 |
| pigment (carbon black, black grades)PA1102 / MJF black grades only | 0.1 – 1.5 | 0.5 |
| poly(11-aminoundecanoic acid) / PA11 homcastor-oil derived, ~100% bio-based carbon; base unfilled powder | balance | — |
PA11 FR — frequently asked
What is PA11 FR used for?
PA11 FR is typically used for flexible fuel lines, pneumatic tubing, living hinges and snap-fit enclosures, footwear midsoles, automotive functional brackets and ducts and sports equipment components. In short: flexible; durable nylon.
What is the yield strength of PA11 FR?
PA11 FR has a typical yield strength of 36 MPa (5.22 ksi) and a tensile strength of 40 MPa (5.8 ksi) — weaker than 65% of polymer grades. Strength varies by condition: see the 17 listed tempers.
Is PA11 FR easy to machine?
Reasonably — machinability is rated good (60/100, better than 51% of polymer grades). Machines cleanly with sharp, high-rake tools and air cooling; tough and slightly gummy, so use climb milling and avoid heat build-up that closes drilled holes.
Can PA11 FR be welded?
With care — weldability is rated fair (45/100). Hot-plate, hot-gas, ultrasonic and laser welding all work on PA11; solvent bonding is impractical — use cyanoacrylate or two-part polyurethane/epoxy after plasma or abrasive prep.
What surface finishes work on PA11 FR?
Bead blasting, vibratory tumbling, chemical vapor smoothing and dyeing (black/colored) work well; PA11's low moisture pickup keeps dyed and painted parts dimensionally stable, but UV-stabilized topcoat is advised outdoors.
Can PA11 FR be formed, bent or molded?
Print with bed ~185–190 °C and slow, uniform cooling to limit curl; reuse powder at 30–70% refresh, dry powder before use, and scale parts ~2.5–3.5% for sinter shrinkage.
What is the maximum service temperature of PA11 FR?
PA11 FR is rated for continuous use to about 85°C (185 °F), and briefly to 130°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in PA11 FR?
Yes — PA11 FR is available for 3D printing with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- PA 1101 / PA 1102 black laser-sintering material data sheet — EOS GmbH (2023)
- HP 3D High Reusability PA 11 material data sheet — HP Inc. (2023)
- Rilsan PA11 resin and fine-powder technical data — Arkema (2022)
- PA 11 / PA 11-GF / PA 11-ESD laser sintering powders — Advanced Laser Materials (EOS North America) (2022)
- HP 3D High Reusability PA 11 Gen2 — Technical Data Sheet — HP (2025)
- CAMPUS polyamide 11 property records — CWFG / CAMPUS consortium (2023)
- Forward AM Ultrasint PA11 Black CF — Technical Data Sheet — Forward AM
- Arkema Rilsan Invent Natural — Technical Data Sheet — Arkema
- HP 3D High Reusability PA 11 — Technical Data Sheet — HP (2026)
- EOS PA 1101 — Technical Data Sheet — EOS
- EOS PA 1102 black — Technical Data Sheet — EOS
- EOS PA 1101 ClimateNeutral — Technical Data Sheet — EOS
- Formlabs Nylon 11 Powder — Technical Data Sheet — Formlabs (2021)
- Formlabs Nylon 11 CF Powder — Technical Data Sheet — Formlabs (2023)
- HP HP 3D High Reusability PA 11 — Technical Data Sheet — HP
- HP HP 3D High Reusability PA 11 Gen2 — Technical Data Sheet — HP
- Sinterit PA11 Onyx — Technical Data Sheet — Sinterit (2025)
- Sinterit PA11 CF — Technical Data Sheet — Sinterit (2025)
- Forward AM Ultrasint PA11 — Technical Data Sheet — Forward AM
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
- ISO 527-2 / ISO 178 / ISO 75 plastics test methods — ISO (2019)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.