Tensile Properties of Film - ISO 527-1,-3
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For film and sheet materials with a thickness up to 1 mm. For materials with a thickness greater than 1 mm ISO 527-1,-2 should be used.
| Property |
Definition |
| Tensile Modulus |
Slope of the stress-strain curve between two specified strains (ε1=0.0005 and ε2=0.0025) |
| Tensile Strain at Break |
Tensile strain corresponding to the point of rupture. |
| Tensile Strength |
Maximum tensile stress sustained by the specimen during a test. |
| Tensile Stress at Yield |
Tensile stress at which an increase in strain occurs without an increase in stress (yield point). |
Two sets of specimens are tested for anisotropic materials, the first set parallel to the direction of polymer orientation (MD - machine direction) and the second set perpendicular to the direction of polymer orientation (TD - transverse direction).
Polymer Orientation
s
Specimen Types
| Specimen |
Diagram |
Usage |
| 1B |
 |
Rigid sheet |
| 2 |
 |
Preferred |
| 4 |
 |
Flexible thermoplastic sheet |
| 5 |
 |
Very high strain at break materials |
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