Ixef® PARA

Aesthetics and Strength – A Beautiful Combination

  Ixef® PARA product icon Click to enlarge

Ixef® PARA (polyarylamide) provides a unique combination of strength and aesthetics, making it ideal for complex parts that require both overall strength and a smooth, beautiful surface.

Ixef® compounds typically contain 50-60% glass fiber reinforcement, giving them remarkable strength and rigidity. What makes them unique is that even with high glass loadings, the smooth, resin-rich surface delivers a high-gloss, glass-free finish that’s ideal for painting, metallization or producing a naturally reflective shell.

High flow into thin walls

In addition, Ixef® PARA is an extremely high-flow resin so it can readily fill walls as thin as 0.5 mm, even with glass loadings as high as 60%.

Excellent Surface Finish

Superb, resin-rich surface provides a highly polished appearance, even with high glass fiber content.


Surface Roughness


Very High Strength and Stiffness

The tensile and flexural strength of Ixef compounds are similar to many cast metals and alloys at ambient temperature. Ixef 1032 (60% glass fiber) exhibits typical values of 280 MPa and 400 MPa respectively at 23°C (73°F).

Tensile Strength vs. Tensile Modulus


Tensile properties comparison*
MaterialTensile Strength
at Break, MPa
Tensile Modulus,
Ixef 1022  (50% glass fiber)28020
Ixef 1032  (60% glass fiber)28024
Tin Bronze300105
Annealed Zinc150105
Zinc Alloy (4% Al, 0.04% Mg)28085
Annealed Aluminum (99.6%)7069
Al Ag3 Alloy14069

*ASTM Test Method at 23°C (73°F)

Flexural Strength vs. Flexural Modulus


Data Sheets

Broad Product Range

The semi-aromatic, semi-crystalline polyamide base resin is compounded with glass fiber, carbon fiber, mineral and/or advanced fillers. Impact modified and flame retardant grades as well as custom colors are available.

Standard grades
Glass Fiber Reinforced
Ixef 1022*50% glass fiber, general purpose for injection molding
Ixef 102750% glass fiber, improved thermal stability
Ixef 103260% glass fiber, general purpose for injection molding
Flame Retardant
Ixef 152150% glass fiber, flame retardant
Ixef 152450% glass fiber, halogen-free flame retardant
Ixef 162250% glass fiber, impact modified
Mineral/Glass Fiber Reinforced
Ixef 203055% mineral/glass fiber, low warpage

*1022/0006 (natural) and 1022/9006 (black) are compliant with ISO 10993

Specialty grades
Glass Fiber Reinforced
Ixef 100230% glass fiber
Ixef GS-102250% glass fiber, gamma stabilized for healthcare applications
Ixef 102550% glass fiber, UV stabilized for automotive applications
Carbon Fiber Reinforced
Ixef 300830% carbon fiber
Food-Contact and Potable Water Applications
Ixef FC-102250% glass-fiber reinforced, approved for food-contact
Ixef DW-102250% glass-fiber reinforced, approved for potable water applications

Other Properties

Very Low Creep

The creep resistance of Ixef compounds is superior to that of most engineering polymers with similar glass fiber content. Deformation of Ixef 1032 is less than 1% after 1,000 hours under 50 MPa of pressure at 50°C (122°F).

Creep Resistance at Elevated Temperatures


Good Dimensional Stability

The coefficient of linear thermal expansion (CLTE) of Ixef compounds is similar to that of many cast metals and alloys at ambient temperatures. Low mold shrinkage and the ability to maintain tight tolerances (as little as ± 0.05% length tolerances when properly molded) allow for high reproducibility.

Coefficient of Linear Thermal Expansion of Ixef Resin
Ixef 10221.5 10-5K-1(Flow direction)
Ixef 10223.6 10-5K-1(Transverse direction)
Steel1.2 10-5K-1
Aluminum2.4 10-5K-1
Brass1.8 10-5K-1
Zinc3 10-5K-1

Low and Slow Rate of Water Absorption

Ixef®PARA’s highly aromatic structure results in lower and slower water absorption than typical polyamides, which are highly sensitive to humidity. Water absorption for Ixef 1022 (50% glass fiber) is only 0.16% after 24 hours of water immersion at room temperature.

Moisture Absorption, 24h at 23 °C


Good Chemical Resistance

Ixef®compounds are highly resistant to aqueous solutions of wide range of chemicals and cleaning fluids as well as to common solvents, such as:

  • Aliphatic hydrocarbons
  • Aromatic hydrocarbons
  • Chlorinated solvents
  • Ketones
  • Esters
  • Ethers
  • Glycols

Testing also shows good resistance to standard engine oil (Type SAE 10W30) after 2,000 hours at 120°C (248°F) and to automotive fuels after 2,000 hours at 40°C (104°F).

Ease of Processing

Ixef® resin offers good injectability even for grades with high glass fiber content – ideal for molding complex or thin-walled parts. Immediately below the smooth outer surface, glass fibers orient in the flow direction, while at the core, fiber orientation becomes random. The result is a strong polymer with a beautiful, smooth finish.

Recommendations for Processing

Processing Temperatures
Cylinder Temperature
Feed zone250 - 280°C
Compression zone250 - 280°C
Metering zone or homogenization zone250 - 280°C
Nozzle260 - 290°C
Hot runners (when used)250 - 260°C
Temperature of the Melt (measured on purged material)
Standard grades (eg. Ixef 1022, 2030)280°C
Impact modified (eg. Ixef 1622) and flame retardant grades (eg. Ixef 1521, 1524)<270°C
Mold Temperature
Mold Temperature120 - 140°C
Screw Speed, peripheral(1)3-10 m/min
Back Pressure0-10 bar
Injection SpeedHigh
Injection Pressure500-1500 bar (material)
Hold and Cooling
Hold Pressure500-1500 bar (material)
Hold time(sec)3w (2)
Cooling time, including hold time(sec)2.5w2 (3)

(1)for screw diameter 25-50 mm
(2)w = wall thickness in mm
(3)w = wall thickness in mm, > 2mm

Mold Temperature

It is essential that the mold temperature be 120°C to 140°C to achieve maximum crystallinity. This will assure:

  • Good surface finish
  • Good dimensional stability
  • Full mechanical properties
  • Low moisture absorption