ASTM B398 PDF

ASTM B/BM: Standard Specification for Aluminum-Alloy T81 and T83 Wire for Electrical Purposes. ASTM Standards: 2. B Test Method for Resistivity of Electrical Conductor Materials B Test Methods for Tension Testing Wrought and Cast Aluminum-. Find the most up-to-date version of ASTM B at Engineering

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A number in parentheses indicates the year of last reapproval.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. Aluminum-alloy corresponds to uni? Material and Manufacture 5. The values in each system are not exact equivalents; therefore, each system shall be b3998 independently of the other.

Combining values from the two systems may result in nonconformance with the speci? Current edition approved April 10, Originally bb398 as B — 63T. Last previous edition B — The material shall conform to the chemical composition prescribed in Table 1.

Such tests shall show the tensile strength to be not less than 42 ksi MPa for cold-pressure welds and for electric-butt, cold-upset welds and not less than 15 ksi MPa for electric-butt welds. No fracture shall occur. Slight surface checks shall not consititute cause for rejection. Corresponding values for other conductivities aluminum were derived from these by multiplying by the reciprocal of the conductivity ratios accurate to at least seven signi?

ASTM B∕BM 电气用铝合金T81线_百度文库

Diameter and Permissible Variations If the material is in coil form, one gaging shall be made near each end and one near the middle. Joints may be made in the drawing stock or wire after heat treatment and prior to?

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Following welding, electric-butt welds shall be annealed for a distance of at least 6 in. Workmanship, Finish and Appearance If, however, the presence of other elements is suspected or indicated in amounts greater than the speci?

Sampling, Testing, and Conformance Criteria Obtain the tensile strength, using Test Methods Bby dividing the maximum load resisted by the tensile specimen, with the tensile stress to be expressed in kips lbf. Elongation is the percent increase in length of the tensile specimen as measured between gage marks originally spaced 10 in. Elongation measurements are not required for wire less than 0. Should any part of the fracture take place outside the elongation gage lines, or if examination of the tensile specimen indicates a?

Test 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.

Packaging, and Package Marking If additional information is b3988 be required on the tags, it shall be arranged with the manufacturer at the time of purchase. Inspection of lots of less than lb [ kg] of wire cannot be justi?

The sample sizes and conformance criteria are applicable only to lots produced by manufacturers that meet this requirement. NOTE 3—The speed of testing can affect the results of the tensile strength and elongation test.

Standard Specification for Aluminum-Alloy 6201-T81 and 6201-T83 Wire for Electrical Purposes

In order to ensure uniformity in the test method and valid applicability of the test results to the conformance criteria, it is recommended that the rate of separation of the heads of the tensile test machine not exceed 0.

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NOTE 4—Relationships that may be useful in connection with the values of electrical resistivity are shown in Table 2. The value of 0. A complete discussion of this subject is contained in NBS Handbook The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of aastm rights, are entirely their own responsibility. This standard is xstm to revision at any time by the responsible technical committee and must be reviewed every?

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.