what is

• Spool Dimensions:200mm diameter | 70mm width | 55mm centre bore
• Spool Material: Heat-resistant Polycarbonate
• Nominal Weights:1kg, 0.5 kg respectively
• Nominal Lengths:322m, 161m respectively

• Tensile Strength: XY:60 MPA YZ: 70 MPA ZX:45 MPA | Yield, 23°C
• Tensile Modulus: XY:3.3 GPA YZ: 2.5 GPA ZX:2.7 GPA | 23°C
• Tensile Elongation: XY:15% YZ: 15% ZX:5.0% | Break, 23°C

• Melting Point :303°C DSC
• Glass Transition (Tg) :151°C (DSC (Onset) | 154°C(DSC (Midpoint)
• Crystallisation Point : 249°C

320M

Melt Viscosity : 245Pa.s (400°C, 1000s-1 )

• PEEK filament temperature
   / Time: 120°C / 5h (residual moisture <0.02%)
• Extrusion Temperature: 380-400°C (Nozzle)
• Chamber/Build-Space Temperature: Printing directly semi-crystalline: Above 150°C 
• Printing amorphous: Below 150°C 
• Bed Temperature: 20-40°C above chamber temperature, keeping below 150°C for amorphous print
• Annealing conditions: Slow heating rate (3°C/min ramp rate). 170-180°C, 2-4 hours. Optimization may be required.

Before printing, the PEEK material is baked in an oven at 150°C for 3 hours.

The purpose of baking is to remove moisture from the material, which prevents air bubbles and poor interlayer bonding during printing.

Remove and wait for natural cooling.

Nozzle Diameter

• Typical Sizes: 0.4mm to 0.6mm
• Selection Criteria:
• 4 mm: for higher precision and detail, but longer print times
• 0.6 mm: Larger prints that need much more strength come with less detail, printing is slower.
• Pro Tip: Wear resistant nozzle such as these nozzles for wear resistance of tungsten carbide, if you are considering using wear-resistant nozzle in PEEK as such nozzle materialsious are more robust, but more wear resistance.

Optimal Feed Rate: 10-30 mm³/s
Adjustments Based On:

• Printing Temperature: The higher the temperature, the better so long as it is still within the printer material limitations.
• Print Speed: Should be tuned relative to print complexity and finish; slower feed rates are best for fine layers and surface finish.
• Layer Thickness and Fill Density: Thicker layers and higher fill densities necessitate a higher feed rate.
  Note: Start with a lower feed rate and gradually increase to find optimal parameters while ensuring stable extrusion and print quality.

Printing Speed: Recommended 30-50 mm/s, matched with feed rate and temperature to prevent unstable extrusion and poor layer adhesion.
Retraction Settings:

• Retraction Distance: 1-2 mm
• Retraction Speed: 20-30 mm/s
• Note: Due to PEEK's high viscosity, retraction settings need fine-tuning to avoid stringing and clogging.