CNC Machined Polycarbonate (PC)

Tough, Durable, High impact resistance, Transparent or Translucent prototypes

Snapshot of Polycarbonate (PC)

PC plastic Description
Unfilled PolyCarbonate (PC) is a tough and durable, transparent engineering thermoplastic notable for its high impact resistance, temperature resistance and optical properties.
Advantages of PC parts
High impact resistance, Good Dimensional Stability, Excellent strength retention at elevated temperatures, Low coefficient of thermal expansion, Good Dimensional Stability. Good electrical insulator and having Heat resistant and Flame retardant properties.
PC plastic Uses
Automotive headlamp Lenses and Safety Shields, Medical/Healthcare apparatus, Automotive Applications, Construction Industry, Sporting Goods, Appliances, Casing and housings, Electrical/Electronic components, Connectors, Compact Discs, Telecommunication Hardware.
Finishing examples of PC prototypes
Available Finishes
  • Machine finish
  • Transparent finish (like lens)
  • Translucent bead-blast finish (like foggy lamp shade)
  • Painted or Grey primered
PC material Spec
Property Data
Density 1.20 g/cm3
Water Absorption-24 Hours (%) 0.15 %
Tensile Strength (Mpa) 64 Mpa
Tensile Modulus (GPa) 2.20 GPa
Flexural Strength (MPa) 90 Mpa
Vicat Softening Temp (℃) 136℃
Heat Deflection Temp - 1.8MPa (℃) 131℃
Coefficient of Friction 0.38
Note: This Data is indicative only
Further considerations
Typically, parts have translucent look after machining, but transparency can be achieved by highly polishing. It's strength, durability, impact resistance and transparency make it an ideal material for certain structural applications. Large and complex parts with undercuts can be made in sections and glued.
Limitations
Subject to cracking due to stress, moderate resistance to Chemicals, Low scratch-resistance.
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Plastic properties comparison

Check out how PC properties compared to other plastics

Density (g/cm³)

For a homogeneous object, Density = Mass Divided By Volume. The higher the density, the tighter the particles are packed inside the substance. The Specific Gravity is the ratio of Density of the material to the Density of water at a specified temperature. It is common to use the density of water at 4°C as reference - at this point the density of water is at the highest i.e. 1 g/cm3. So Specific Gravity of less than “1” means that the material will float in water.

  • ABS
    g/cm³
  • PC
    g/cm³
  • PP
    g/cm³
  • ACETAL(POM)
    g/cm³
  • ACRYLIC(PMMA)
    g/cm³
  • NYLON
    g/cm³
  • HDPE
    g/cm³

Water Absorption-24 Hours (%)

Water absorption is used to determine the amount of water absorbed under specified conditions. Water absorption is expressed as increase in weight percent. Percent Water Absorption = [(Wet weight - Dry weight)/ Dry weight] x 100

  • ABS
    %
  • PC
    %
  • PP
    %
  • ACETAL(POM)
    %
  • ACRYLIC(PMMA)
    %
  • NYLON
    %
  • HDPE
    %

Tensile Strength (Mpa)

Tensile strength is a property of a material that measures the force required to pull something to the point where it breaks. Tensile strength is important for a material that is going to be stretched or under tension. In many brittle materials such as rock, concrete, cast iron, tensile strength is almost negligible.

  • ABS
    Mpa
  • PC
    Mpa
  • PP
    Mpa
  • ACETAL(POM)
    Mpa
  • ACRYLIC(PMMA)
    Mpa
  • NYLON
    Mpa
  • HDPE
    Mpa

Tensile Modulus (GPa)

Tensile Modulus, also known as Young's modulus, is defined as the ratio of stress to strain. Rigid materials, such as metals, have a high Young's modulus. In general, fibers have high Young's modulus values, elastomers have low values, and plastics lie somewhere in-between.

  • ABS
    GPa
  • PC
    GPa
  • PP
    GPa
  • ACETAL(POM)
    GPa
  • ACRYLIC(PMMA)
    GPa
  • NYLON
    GPa
  • HDPE
    GPa

Elongation at break (%)

The elongation at break is the strain on a sample when it breaks. This is usually expressed as a percent. The elongation at break is sometimes called the ultimate elongation. Fibers have a low elongation-to-break and elastomers have a high elongation-to-break

  • ABS
    %
  • PC
    %
  • PP
    %
  • ACETAL(POM)
    %
  • ACRYLIC(PMMA)
    %
  • NYLON
    %
  • HDPE
    %

Izod impact Strength Notched (J/m)

Notched Izod Impact is a test of how impact resistant a polymer will be. This is useful information when the application is for high impact performance. The Izod Impact test is a measurement from energy used to break a notch in the specimens.

  • ABS
    J/m
  • PC
    J/m
  • PP
    J/m
  • ACETAL(POM)
    J/m
  • ACRYLIC(PMMA)
    J/m
  • NYLON
    J/m
  • HDPE
    J/m

Flexural Strength (MPa)

The flexural strength of a material is its ability to resist deformation under load, or how much you can bend the material before it starts to break. Skis, fishing rods, pole vault poles and diving boards are examples of parts needing high flexural strength.

  • ABS
    Mpa
  • PC
    Mpa
  • PP
    Mpa
  • ACETAL(POM)
    Mpa
  • ACRYLIC(PMMA)
    Mpa
  • NYLON
    Mpa
  • HDPE
    Mpa

Vicat Softening Temp (℃)

The temperature at which a thermoplastic material reaches a specific level of softness. It is taken as the temperature at which the specimen is penetrated to a depth of 1 mm by a flat-ended needle with a 1 square mm circular or square cross-section.

  • ABS
  • PC
  • PP
  • ACETAL(POM)
  • ACRYLIC(PMMA)
  • NYLON
  • HDPE

Coefficient of Friction

The coefficient of friction, or COF, is described as the ratio of the force of friction between two bodies and the force pressing them together. A lower friction coefficient indicates that the surfaces are slicker - there is less resistance to the sliding motion.

  • ABS
  • PC
  • PP
  • ACETAL(POM)
  • ACRYLIC(PMMA)
  • NYLON
  • HDPE

Heat Deflection Temp - 1.8MPa (℃)

The Heat deflection temperature (HDT) is the temperature at which a polymer or plastic sample deforms under a specified load. A constant load is applied in the center of the specimen and the bath temperature is raised at a constant rate. The temperature of the bath at which the flexural deflection of the loading point has reached a predefined level is the heat deflection temperature of the material.

  • ABS
  • PC
  • PP
  • ACETAL(POM)
  • ACRYLIC(PMMA)
  • NYLON
  • HDPE