ASTM E8/E8M-09 pdf free download.Standard Test Methods for Tension Testing of Metallic Materials.
ASTM E8/E8M-09 cover the tension testing of metallic materials in any form at room temperature, specifically, the methods of determination of yield strength, yield point elongation, tensile strength, elongation, and reduction of area.
Referenced Documents
ASTM A356/A356M Specification for Steel Castings, Carbon, Low Alloy, and Stainless Steel, Heavy-Walled for Steam Turbines;
ASTM A370 Test Methods and Definitions for Mechanical Testing of Steel Products;
ASTM B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products;
3. Terminology
3.1 Definitions-The definitions of terms relating to tension testing appearing in Terminology E6 shall be considered as applying to the terms used in these test methods of tension testing. Additional terms being defined are as follows.
3.1.1 discontinuous yielding-in a uniaxial test, a hesitation or fluctuation of force observed at the onset of plastic defor. mation, due to localized yielding. (The stress-strain curve need not appear to be discontinuous.)
3.1.2 elongation at fractimre-the elongation measured just prior to the sudden decrease in force associated with fracture. For many materials not exhibiting a sudden decrease in force the elongation at fracture can be taken as the strain measured just prior to when the force falls below 10 % of the maximum force encountered during the test.
3.1.3 lower yield strength, LYS — in a uniaxial test. the minimum stress recorded during discontinuous yielding. Ignoring transient effects
3.1.4 uniform elongation, EL[%]—the elongation deter- mined at the maximum force sustained by the test piece just prior to necking or fracture, or both.