ASTM-B230/B230M:07(R2021) pdf free download – Standard Specification for Aluminum 1350-H19 Wire for Electrical Purposes.
14.3 Tensile strength and elongation may be determined simultaneously. Obtain the tensile strength, in accordance with Test Methods B557 or B557M, by dividing the maximum load resisted by the tensile specimen by the original cross-sectional area of the specimen, with the tensile stress to be expressed in ksi [MPaJ. Elongation is the percent increase in length of the tensile test specimen as measured between gage marks originally spaced 10 in. [250 mm] apart on the specimen. Elongation measurements are not required for wires <0.0500 in. 1<1.25 mml in diameter. Should any part of the fracture take place outside the elongation gage lines, or if examination of the tensile specimen indicates a flaw, the values obtained may not he representative and a test on another section of the specimen may be run (Explanatory Note 6). 14.4 Determine the electrical resistivity in accordance with Test Method B 193. 14.5 Test Results—A numerical average for the tensile strength. elongation, and resistivity of the four specimens shall be calculated and shall be considered the lot average. 14.6 Conformance Criteria—To be considered in conformance, the lot average test results shall meet the average for a lot requirements of Table 1 or Table 2 and Table 3, and the test results of each specimen shall meet the individual tests requirements of Table I or Table 2 and Table 3 unless otherwise specified. 14.6.1 If the lot average results are in conformance, and all of the individual specimen results are in conformance, the lot shall be considered in conformance. 14.6.2 If the lot average result for one or more of the tested properties is not in conformance and one or more of the individual specimen results is also not in conformance, the lot shall he considered not in conformance. 14.6.3 If the lot average results are in conformance, but one or more of the individual specimen results are not in conformance, the lot shall be considered in conformance except that the production unit or units represented by the non-conforming specimen or specimens shall be rejected. 14.6.4 If the lot average results for one or more of the tested properties is not in conformance, but all the individual specimen results are in conformance, then additional test specimens and tests shall he required as follows: 14.6.4.1 An additional six test specimens shall he obtained, one each from six production units other than the four originally sampled. Tests shall be run on the six additional specimens, and a numerical average of the ten tested specimens shall be calculated and considered the lot average. 14.6.4.2 If the ten specimen lot average results are in conformance, and all ten of the individual specimen results arc in conformance, the lot shall be considered in conformance. 14.6.4.3 If the ten specimen lot average results for one or more of the tested properties are not in conformance, or if one or more of the ten individual specimen results are not in conformance, the lot shall be considered not in conformance. 14.6.5 In the event a lot is rejected in accordance with 14.6.2 or 14.6.4.3, production units making up that lot may be individually tested.