Polycarbonate Overview

Polycarbonate is a strong, tough engineering thermoplastic with excellent temperature and impact resistance. This grade is formulated for reduced shrinkage and improved dimensional stability, making it suitable for functional components that must carry load or retain performance at elevated temperatures.

Design Advantages

  • High tensile and flexural strength for structural prototypes and end-use components
  • Elevated glass transition and heat-deflection temperatures for higher-temperature service
  • Strong impact performance for housings, guards, brackets, fixtures, and protective parts
  • Naturally transparent polymer family with useful toughness and dimensional stability

Material Specifications

ItemPublished Value
Material familyPolycarbonate
Filament diameter1.75 mm
Published density1.20 g/cm3
Glass transition temperature145 °C
Water solubilityInsoluble
Appearance and odorSolid filament; odorless under normal handling

Material Properties

Physical and Thermal Properties

PropertyTest MethodPublished Value
DensityISO 11831.20 g/cm3
Melt index260 °C at 2.16 kg32.2 ± 2.9 g/10 min
Melting temperatureDSC at 10 °C/min228 °C
Glass transition temperatureDSC at 10 °C/min145 °C
Crystallization temperatureDSC at 10 °C/minNot reported
Vicat softening temperatureISO 306 and GB/T 1633119 °C
Heat deflection at 1.8 MPaISO 75117 °C
Heat deflection at 0.45 MPaISO 75112 °C
Saturated water absorption25 °C and 55% RH0.25%

Mechanical Properties

PropertyTest MethodPublished Value
Young’s modulus X/YISO 527 and GB/T 10402,110 ± 40 MPa
Young’s modulus ZISO 527 and GB/T 10401,450 ± 60 MPa
Tensile strength X/YISO 527 and GB/T 104062 ± 2 MPa
Tensile strength ZISO 527 and GB/T 104056 ± 2 MPa
Elongation at break X/YISO 527 and GB/T 10403.8 ± 0.3%
Elongation at break ZISO 527 and GB/T 10402.1 ± 0.4%
Flexural modulus X/YISO 178 and GB/T 93412,310 ± 70 MPa
Flexural modulus ZISO 178 and GB/T 93411,620 ± 80 MPa
Flexural strength X/YISO 178 and GB/T 9341108 ± 4 MPa
Flexural strength ZISO 178 and GB/T 934155 ± 2 MPa
Impact strength X/YISO 179 and GB/T 104334.8 ± 2.1 kJ/m2; notched 7.5 ± 1.3 kJ/m2
Impact strength ZISO 179 and GB/T 10439.0 ± 0.4 kJ/m2

Processing

Recommended Processing Window

SettingRecommended Range
Drying before printingForced-air drying oven at 80 °C for 8 h
Printing and storage humidityBelow 20% RH; sealed with desiccant
Nozzle temperature260 to 280 °C
Build surfaceEngineering plate, high-temperature plate, or textured PEI with PVP glue
Bed temperature90 to 110 °C
Cooling fan0 to 60%
Printing speedBelow 300 mm/s
Retraction0.8 to 1.4 mm at 20 to 40 mm/s
Chamber temperature45 to 60 °C
Overhang and bridgingApproximately 70 degree maximum overhang; approximately 40 mm bridge

Representative Specimen Conditions

ParameterSource Condition
Nozzle temperature270 °C
Bed temperature100 °C
Printing speed200 mm/s
Infill density100%
Pre-test conditioningAnnealed and dried at 80 °C for 12 h

Chemical and Handling Characteristics

CharacteristicPublished Information
CompositionPolycarbonate
Odor and skin hazardsOdorless; source documentation reports no skin hazard
Chemical stabilityStable under normal storage and handling conditions
Water solubilityInsoluble
Acid and alkali resistanceNot resistant
Organic solvent resistanceNot resistant to some organic solvents
Oil and grease resistanceResistant to most kinds of oil and grease
FlammabilityFlammable and self-extinguishing in air
Combustion productsWater and carbon oxides; light phenolic odor

Design and Validation Considerations

  • Design for anisotropy: published tensile strength is relatively similar between X/Y and Z, but flexural strength is 108 MPa in X/Y and 55 MPa in Z.
  • Use X/Y-oriented load paths where maximum stiffness, flexural strength, and impact performance are important.
  • Dry and store material below 20% RH with desiccant; moisture can affect extrusion quality, dimensions, and mechanical performance.
  • Use an enclosed, temperature-controlled build environment to manage shrinkage, interlayer bonding, and dimensional stability.
  • Validate the final part for sustained temperature, chemical exposure, creep, impact, flammability, and safety-critical loading in the intended service environment.

Published Data and Qualification