Tensile Properties - ISO 527-1,-2
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Tensile testing is performed by elongating a specimen and measuring the load carried by the specimen.
From a knowledge of the specimen dimensions, the load and deflection data can be translated into a stress-strain curve. A variety of tensile properties can be extracted from the stress-strain curve.
Tensile Test
| Property |
Definition |
| Tensile Strain at Break |
Tensile strain corresponding to the point of rupture. |
| Nominal Tensile Strain at Break |
Tensile strain at the tensile stress at break. |
| Tensile Strain at Yield |
Tensile strain corresponding to the yield (an increase in strain does not result in an increase in stress). |
| Tensile Stress at Break |
Tensile stress corresponding to the point of rupture. |
| Tensile Stress at 50% Strain |
Tensile stress recorded at 50% strain. |
| Tensile Stresss at Yield |
Tensile stress corresponding to the yield point (an increase in strain does not result in an increase in stress). |
| Tensile Modulus |
Often referred to as Young's modulus, or the modulus of elasticity, tensile modulus is the slope of a secant line between 0.05% and 0.25% strain on a stress-strain plot. Tensile modulus is calculated using the formula:
Et=(σ2-σ1)/(ε2-ε1)
where ε1 is a strain of 0.0005,
ε2 is a strain of 0.0025,
σ1 is the stress at ε1,
and σ2 is the stress at ε2. |
Illustration of Tensile Modulus
Test Specimen Summary
| Specimen |
Note |
Preferred Thickness (mm) |
| Type 1A |
Preferred for directly molded multi-purpose test specimens. |
4 |
| Type 1B |
Preferred for machined test specimens. |
4 |
| Type 1BA |
Scaled down version of 1B. All dimensions except thickness scaled by 1.2. |
>2 |
| Type 1BB |
Scaled down version of 1B. All dimensions except thickness scaled by 1.5. |
>2 |
| Type 5A |
Small specimen. |
>2 |
| Type 5B |
Small specimen |
>1 |
Type 1A, 1B, 1BA, and 1BB Specimen
Type 5A and 5B Specimen
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