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Ixef® PARA


Get the Performance You Need

Ixef® PARA’s broad product family gives you numerous ways to optimize performance, processing and price. Its high flow, dimensional stability, and high strength and stiffness make it suitable for replacing metal in a wide range of structural applications where aesthetics are important.

Discover all Ixef® PARA grades


Very High Strength and Stiffness 

The tensile strength of Ixef® PARA compounds is similar to many cast metals and alloys at ambient temperature. Its flexural strength is also comparable to some metals

Tensile properties comparison*
Material Tensile Strength 
at Break, MPa
Tensile Modulus, 
Ixef® 1022  (50% glass fiber) 280 20
Ixef® 1032  (60% glass fiber) 280 24
Tin Bronze 300 105
Brass 250 105
Annealed Zinc 150 105
Zinc Alloy (4% Al, 0.04% Mg) 280 85
Annealed Aluminum (99.6%) 70 69
Duralumin 190 74
Al Ag3 Alloy 140 69

*ASTM Test Method at 23°C (73°F)

Excellent Surface Finish 

Ixef ® PARA’s ultra-smooth, resin-rich surface finish provides best-in-class aesthetics in structural thermoplastics. Plus, molded parts exhibit a low tendency for sink marks in both thin and thick components.

Very Low Creep

A 50% glass-filled Ixef ® grade deforms less than 1% after 1,000 hours under 50MPa (7,250 psi) at 50 °C (122°F), offering lower creep than some metals and most engineering polymers with similar glass fiber content.



Good Chemical Resistance 

Ixef® PARA compounds are resistant to common solvents such as aliphatic and aromatic hydrocarbons, chlorinated solvents, ketones, esters, ethers and glycols. In addition, they resist aqueous solutions of many chemicals and cleaning fluids, standard engine oil (Type SAE 10W30), hydraulic oil and a variety of automotive fuels. 

Slow Water Absorption Rate 

The partially aromatic molecular structure of Ixef® PARA results in lower and slower water absorption than standard polyamides, thereby reducing the tendency to warp. The dimensional change of 50% glass-filled Ixef® 1022 is only 0.16% after 24-hour water immersion at room temperature.

Low Warpage 

Compounds filled with glass fiber have a tendency to warp due to the non-uniform (anisotropic) parallel and perpendicular shrinkage rates. Compared to standard polyamides, Ixef® PARA compounds have a lower tendency to warp due to their lower anisotropic behavior. Moreover, there are special low warpage grades available.

Good Dimensional Stability 

Ixef® PARA’s unique chemical nature provides its low mold shrinkage and low coefficient of expansion which translates into high reproducibility and the ability to maintain tight tolerances.

Coefficient of Linear Thermal Expansion of Ixef® Resin
Ixef® 1022 1.5 10-5K-1 (Flow direction)
Ixef® 1022 3.6 10-5K-1 (Transverse direction)
Steel 1.2 10-5K-1
Aluminum 2.4 10-5K-1
Brass 1.8 10-5K-1
Zinc 3 10-5K-1

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.

Processing Temperatures
Cylinder Temperature
Feed zone 250 - 280°C
Compression zone 250 - 280°C
Metering zone or homogenization zone 250 - 280°C
Nozzle 260 - 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 Temperature 120 - 140°C
Screw Speed, peripheral(1) 3-10 m/min
Back Pressure 0-10 bar
Injection Speed High
Injection Pressure 500-1500 bar (material)
Hold and Cooling
Hold Pressure 500-1500 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