Siraya Tech PPA 1.75mm 1kg

The filament Siraya Tech PPA (Polyphthalamide) is the ideal material for those seeking maximum strength, precision, and dimensional stability even in the most extreme conditions. This high-temperature nylon was designed for engineering applications requiring chemical and thermal resistance, low warpage, and excellent mechanical performance.

PPA It offers exceptional tensile strength (72MPa), high stiffness, excellent flexural strength (115MPa), and an extremely abrasion-resistant surface thanks to its low coefficient of friction and self-lubricating ability. Its low moisture absorption makes it much more stable than all traditional PA6 and PA66: it is ideal for moving parts, gears, bearings, industrial fasteners, plates, electronic housings, and automotive and aerospace components.

It is compatible with most professional FDM printers equipped with an all-metal extruder and guarantees excellent results even for objects with complex details or difficult geometries, thanks to its reduced propensity for warping and shrinking compared to classic nylon.

Technical specifications

• Filament diameter: 1.75mm (1kg spool)
• Composition: Polyphthalamide (PPA)
• Density: 1.20–1.21g/cm³
• Recommended printing temperature: 280–300°C
• Heated bed temperature: 70–80°C
• Recommended nozzle: hardened steel, 0.4–1.0mm
• Recommended print speed: 30–120mm/s
• Fans: 20–60%
• Tensile strength (XY): 70–72MPa (dry/saturated)
• Elastic modulus (Young): 3,600MPa
• Flexural strength: 114–115MPa
• Flexural modulus: 3.350MPa
• Elongation at break: 10.5%
• Charpy Impact (XY): 10.1kJ/m²
• Glass transition temperature: 80°C
• HDT (Thermal Deflection): 80–84°C (1.80MPa), 99°C (0.45MPa)
• Vicat softening temp.: 230°C
• Water absorption: 2.5%
• Chemical resistance: excellent
• Odor: minimal, reduced VOC emissions
• Compatibility: FDM printers with all-metal hotends
• Conservation: dry in case of humidity to ensure maximum quality

Directions for use

• Ideal for automotive, aerospace, industrial equipment, bearings, gears, high-performance prototypes .
• Dry at 70–80°C for 4–6h in case of humidity stagnation.
• Use PEI plate or glass with glue for optimal adhesion.