ASTM B398/B398M-02 pdf free.Standard Specification for Aluminum-Alloy 6201-T81 Wire for Electrical Purposes.
Four test specimens shall be obtained, onefrom each of four production units or in accordance withSpecification B 830 (see Explanatory Note 2).
Tensile strength,elongation, and resistivity:14.2.1 Test Methods: Tensile strength and elongation may be determinedsimultaneously. Obtain the tensile strength, using Test MethodsB 557, by dividing the maximum load resisted by the tensile specimen, with the tensile stress to be expressed in kips (10OOlbf.) per square inch (ksi). Elongation is the percent increase in length of the tensile specimen as measured between gagemarks originally spaced 10 in. (254 mm) apart on the specimen. Elongation measurements are not required for wire lessthan 0.0500 in. in diameter. Should any part of the fracture takeplace outside the elongation gage lines, or if examination of thetensile specimen indicates a flaw, the values obtained may notbe representative and a test on another section of the specimenmay be run.Determine the electrical resistivity using TestMethod B 193.
A numerical average for the tensilestrength, elongation, and resistivity of the four specimens shallbe calculated and shall be considered the lot average.
Conformance CriteriaTo be considered in con-formance, the lot average test results shall meet the”averagefor a lot” requirements of Tables 1 and 2, and the test results ofeach specimen shall meet the “individual tests”requirements ofTables 2 and 3 unless otherwise specified. If the lot average results are in conformance,andall of the individual specimen results are in conformance, thelot shall be considered in conformance. If the lot average result for one or more of thetested properties is not in conformance and one or more of theindividual specimen results is also not in conformance, the lotshall be considered not in conformance. If the lot average results are in conformance,butone or more of the individual specimen results are not inconformance,the lot shall be considered in conformanceexcept that the production unit or units represented by thenonconforming specimen or specimens shall be rejected.If the lot average results for one or more of thetested properties are not in conformance, but all the individualspecimen results are in conformance,then additional testspecimens and tests shall be required as follows:An additional six test specimens shall be obtained, oneeach from six production units other than the four originally sampled. Test shall be run on the six additional specimens.anda numerical average of the ten tested specimens shall be calculated and considered the lot average.If the ten specimen lot average results are in conform-ance, and all ten of the individual specimen results are inconformance, the lot shall be considered in conformance.ASTM B398 pdf download.