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Terms found on Data Sheets
Mechanical Properties
- Modulus of Elasticity (Young's Modulus) or, more commonly, Secant Modulus.
- Flexural Modulus, Tensile and Compressive Flexural Strengths.
- Ultimate Tensile Strength.
- Ultimate Tensile Strength at Yield.
- Yield Stress, Yield Strain.
- Nominal Strain at Break.
- Charpy Impact, Notched Impact Strength.
- Puncture Force, Energy.
- Lubricity (Coefficient of Friction).
- Coefficient of Thermal Expansion.
- Fatigue Properties.
- Creep Properties: These are often difficult to find.
- Density (specific gravity).
- Hygroscopic Degree (Water, Humidity Absorption).
- Mold Shrinkage (mm/mm or in/in).
- Fatigue strength (especially for living hinge design).
- Typical safety factors for tensile, flexural, and shear strength.
Thermal Properties
- Deflection Temperature : Vicat.
- Chemical Interaction.
- Flammability Properties.
- Melting Temperature.
- Glass Transition Temperature.
Electrical Properties
- Dielectric Constant.
- Relative Permittivity.
- Surface Resistivity.
- Volume Resistivity.
Rheological Properties
- Melt Volume Flow Rate.
- Mold Shrinkage.

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