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ASTM B986-13(R2019) pdf free download

ASTM B986-13(R2019) pdf free download.Standard Test Method for Determination of Tensile Strength by Mass Method for Stranded Conductors Intended for use in Electronic Application
1. Scope
1.1 This test method covers the procedure for determining the tensile strength by a mass method for uninsulated stranded electrical conductors intended for use in electronic application (Explanatory Note 1). 1.1.1 The test method is intended for conductors that are one type of wire (non-composite). The wire type being plain, clad, or coated and stranded together to operate mechanically and electrically as a single conductor. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability of regulatory limitations prior to use. Some specific hazards statements are given in Section 7 on Hazards. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions: 3.1.1 For definitions of terms used in this test method, refer to Terminology B354.
4. Significance and Use
4.1 This test method is designed as an inspection or accep- tance test of tensile strength for stranded metallic conductors.
5. Apparatus
5.1 Tensile Testing Machine—Machines used for tension testing shall conform to the requirements of Practices E4. 5.2 Balance, for measurement of mass, accurate to 0.1 %. 5.3 Steel Scale, for measurement of length, with smaller divisions, not greater than 1 ⁄ 32 in. (1 mm). 5.4 Jig, or equivalent equipment, for cutting the conductor to length and at right angles to its axis.
6. Procedure
6.1 Breaking Load: 6.1.1 Conduct tensile test in accordance with Test Methods E8/E8M and with a rate of loading not to exceed 10 in./min (250 mm/min.) (Explanatory Note 2 and Note 3). 6.2 Specimen Mass/Unit Length: 6.2.1 Cut the test specimens, making sure that the ends are at right angles to the axis of the conductor. The length of test specimens shall be 2 ft (610 mm) minimum (Explanatory Note 2). 6.2.2 Measure the length of the specimen at room tempera- ture (see Note 1) to the nearest 1 ⁄ 32 in. (1 mm) and measure the mass to within 60.1 % accuracy, converting to lb/1000 ft or kg/km, if weighed in other units. N OTE 1—Correction for temperature variation need not be made, since the error introduced in the length measurement by the temperature variation is less than the required accuracy of the length measurement.

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