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Nylatron® FST PA66

1 of 15 products in this brand
Nylatron® FST Polyamide PA66 is a fire, smoke, and toxicity retardant engineering plastic that is designed to withstand extreme temperatures up to 347° F / 175° C. This grade is JAR / FAR 25.853 compliant, making it the first engineering plastic to achieve this standard. It is specifically developed for aircraft interior environments and is often used as a replacement for metal parts in various applications such as brackets, seal bushings, slide rails, and duct seals.Features:Fire, smoke, and toxicity retardantWithstands temperatures up to 347° F / 175° CJAR / FAR 25.853 compliantBenefits:Provides superior fire safety for aircraft interior environmentsCan withstand extreme temperatures, making it suitable for high-temperature applicationsMeets industry standards for fire and smoke safety, making it a reliable and safe choice for various applicationsApplications:Aircraft interior environmentsBracketsSeal bushingsSlide railsDuct sealsOther high-temperature and fire safety applications.

Polymer Name: Polyamide 66 (PA 66)

Physical Form: Plates, Rods

Features: Good Machinability, High Temperature Resistance, Improved Wear, Light Weight, Low Thermal Expansion, Reduced Noise

Density: 1140.0 - 1140.0 kg/m³

Tensile Modulus: 3500.0 - 3500.0 MPa

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Product Overview
  • JAR/FAR 25.853 compliant
  • Absolutely reliable and constant flame, smoke and toxicity retardant compared to
  • standard Nylon 66
  • Balanced property profile
  • Beneficial cost-performance-ratio
  • Lightweight (60% weight saving compared to aluminum)
  • Very low noise development
  • Easy to machine
  • Wear-friendly to mating surfaces
Product Highlights

Mitsubishi Chemical Advanced Materials’s Nylatron® FST is a specifically designed polymer solution for aircraft interior applications. Its unique features make it the first engineering plastic product of its kind available as semi-finished shapes (rods and sheets). Fire, smoke and toxicity (FST) retardant capabilities enable Nylatron® FST to withstand extreme temperatures up to 175 ºC. The material is particularly suitable for any kind of application where metal parts (e. g. brackets, seal bushings, slide rails and duct seals) or high performance polymers have traditionally been specified. With Nylatron® FST Mitsubishi Chemical Advanced Materials is first on the market with a commercially attractive solution for interior applications in aircraft. Nylatron® FST has passed tests to comply with Federal Aviation Regulations FAR 25.853 – the first engineering plastic shape to achieve this standard and off ering engineers a safe material solution.

Applications & Uses


Physical Form
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Strength90MPaISO 527-1/-2 ⁷
Tensile Strain at Yield (Elongation) 7%ISO 527-1/-2 ⁷
Tensile Strain at Break (Elongation) 1.5%ISO 527-1/-2 ⁷
Tensile Modulus of Elasticity3500MPaISO 527-1/-2 ⁹
Compressive Stress (at 1% nominal strain)30MPaISO 604 ¹⁰
Compressive Stress (at 2% nominal strain)60MPaISO 604 ¹⁰
Compressive Stress (at 5% nominal strain)99MPaISO 604 ¹⁰
Hardness ¹⁴88-ISO 2039-2, Rockwell M 
Thermal Properties
ValueUnitsTest Method / Conditions
Melting Temperature (DSC, 10°C / min)260°CISO 11357-1/-3
Coefficient of Linear Thermal Expansion (23 to 100°C)80μm/(m.K)-
Coefficient of Linear Thermal Expansion (23 to 60°C)95μm/(m.K)-
Heat Deflection Temperature85°CISO 75-1/-2 (Method A: 1.8 MPa (264 PSI))
Continuous Allowable Service Temperature in Air (20.0 hrs) ³80°C-
Minimum Service Temperature ⁴-30°C-
Flammability (Oxygen Index)26%ISO 4589-1/-2
Electrical Properties
ValueUnitsTest Method / Conditions
Electric Strength27kV/mmIEC 60243-1 ¹⁵
Volume Resistivity10E13Ohm.cmIEC 62631-3-1
Surface Resistivity10E12Ohm/sq.ANSI/ESD STM 11.11
Miscellaneous Properties
ValueUnitsTest Method / Conditions
Water Absorption (After 24h immersion in water of 23°C)0.53%ISO 62 ¹⁶
  1. The figures given for these properties are for the most part derived from raw material supplier data and other publications.
  2. Values for this property are only given here for amorphous materials and for materials that do not show a melting temperature (PBI, PAI & PI). DMA settings, oscillation amplitude of 0.20 mm; a frequency of 1 Hz ; heating rate of 2°C/min
  3. Temperature resistance over a period of min. 20,000 hours. After this period of time, there is a decrease in tensile strength – measured at 23 °C (73°F)– of about 50 % as compared with the original value. The temperature value given here is thus based on the thermal-oxidative degradation which takes place and causes a reduction in properties. Note, however, that the maximum allowable service temperature depends in many cases essentially on the duration and the magnitude of the mechanical stresses to which the material is subjected.
  4. Impact strength decreasing with decreasing temperature, the minimum allowable service temperature is practically mainly determined by the extent to which the material is subjected to impact. The value given here is based on unfavorable impact conditions and may consequently not be considered as being the absolute practical limit.
  5. These estimated ratings, derived from raw material supplier data and other publications, are not intended to reflect hazards presented by the material under actual fire conditions. There is no ‘UL File Number’ available for these stock shapes.
  6. Most of the figures given for the mechanical properties are average values of tests run on dry test specimens machined out of rods 40-50 mm (1.5 - 2") when available, else out of plate 10-20mm (0.4 - 0.8"). All tests are done at room temperature (23° / 73°F)
  7. Test speed: either 5 mm/min or 50 mm/min [chosen acc. to ISO 10350-1 as a function of the ductile behavior of the material (tough or brittle)] using type 1B tensile bars
  8. Test speed: either 0.2"/min or 2"/min or [chosen as a function of the ductile behavior of the material (brittle or tough)] using Type 1 tensile bars
  9. Test speed: 1 mm/min, using type 1B tensile bars
  10. Test specimens: cylinders Ø 8 mm x 16 mm, test speed 1 mm/min
  11. Test specimens: cylinders Ø 8 mm x 16 mm, test speed 1 mm/min
  12. Test specimens: bars 4 mm (thickness) x 10 mm x 80 mm ; test speed: 2 mm/min ; span: 64 mm
  13. Test specimens: bars 0.25" (thickness) x 0.5" x 5" ; test speed: 0.11"/min ; span: 4"
  14. Measured on 10 mm, 0.4" thick test specimens.
  15. Electrode configuration: Ø 25 / Ø 75 mm coaxial cylinders ; in transformer oil according to IEC 60296 ; 1 mm thick test specimens.
  16. Measured on disks Ø 50 mm x 3 mm.
  17. Measured on 1/8" thick x 2" diameter or square
  18. Test procedure similar to Test Method A: “Pin-on-disk” as described in ISO7148-2, Load 3MPa, sliding velocity= 0,33 m/s, mating plate steel Ra= 0.7-0.9 μm, tested at 23°C, 50%RH.
  19. Test using journal bearing system, 200 hrs, 118 ft/min, 42 PSI, steel shaft roughness 16±2 RMS micro inches with Hardness Brinell of 180-200
  20. Test using Plastic Thrust Washer rotating against steel, 20 ft/min and 250 PSI, Stationary steel washer roughness 16±2 RMS micro inches with Rockwell C 20-24
  21. Test using Plastic Thrust Washer rotating against steel, Step by step increase pressure, Test ends when plastic begins to deform or if temperature increases to 300°F.
  22. The table, mainly to be used for comparison purposes, is a valuable help in the choice of a material. The data listed here fall within the normal range of product properties of dry material. However, they are not guaranteed and they should not be used to establish material specification limits nor used alone as the basis of design.

Regulatory & Compliance

Certifications & Compliance
Quality Standards