WHAT ARE THEY MEASURE?
ASTM E8 / E8M measures the tensile properties of metallic materials in any form at an ambient temperature between 10 – 38 degrees Celsius (50 – 100 degrees Fahrenheit). Though ASTM E8 / E8M measures many different tensile properties, the following are the most common:
- Yield Strength – The stress at which a material becomes permanently deformed
- Yield Point Elongation – The phase during which a material is transitioning from elastic behavior to plastic behavior
- Tensile Strength – The maximum force or stress that a material is capable of sustaining
- Reduction of Area – A measurement of the ductility of a material
- Total Elongation – A measurement of the percentage increase in length after failure
Though ASTM A370 references different test types, tensile testing is the primary focus. The most commonly measured properties are the following:
- Modulus of Elasticity – A measurement of a material’s resistance to elastic deformation
- Yield Strength – The stress at which a material becomes permanently deformed
- Tensile Strength – The maximum force or stress that a material is capable of sustaining
- Reduction of Area – A measurement of the ductility of a material
- Total Elongation – A measurement of the percentage increase in length after failure
MATERIALS TESTING PREFERANCE
ASTM E8 generally applied for: high-strength materials such as aerospace composites, metal alloys, and crystalline polymers.
ASTM A370 generally applied for: high-strength materials such as spring wire and large diameter fasteners, plate or tubular, steel, stainless steel.
TESTING METHOD
In ASTM A370, tensile test control refers back to the methods of ASTM E8/E8M with the addition of certain calculations specific to the different materials and applications within the ASTM A370 standard.
Other hand, we also have EN ISO standard for Tensile test: ISO 6892-1.
There some different point required from ISO and ASTM document as below attached file:
AMARINE 