What is ASTM E8 standard?

 

Tensile tests conducted under the ASTM E8 / E8M standards are used to determine the level of strain (deformation), strength, and elongation of metallic materials. These properties are often necessary to determine proper specifications for materials to be used in manufacturing and construction. For example, engineers may need to know the tensile properties of a metal to ensure they are appropriate for a specific use such as in a building or vehicle.

 

1. Tensile strength: The maximum amount of tensile (pulling) stress that a material can withstand before failing or breaking.

 

2. Yield strength: The amount of stress at which a material begins to deform plastically. Prior to the yield point, the material will deform elastically and will return to its original shape when the applied stress is removed.

 

3. Elongation: The measure of a material's ductility represented as a percent of the original gage length. 

 

4. Reduction of area: The numerical difference of the original cross-sectional area and that after testing, often expressed as a percentage.

 

The ASTM E8 / E8M standard also provides guidance on instrumentation for testing, testing procedures, reporting of results and it includes specific testing methods for sheet metal and wires. It's important to note that the results of these tests are typically only applicable to the material in the form and condition as tested.

 

Finally, while ASTM E8/E8M is specific to metallic materials, it is similar in many ways to other ASTM and international standards for tensile testing of other types of materials.