ASTM B298 PDF
Find the most up-to-date version of ASTM B at Engineering ASTM B_能源/化工_工程科技_专业资料。Designation: B – 07 Standard Speci?cation for Silver-Coated Soft or Annealed Copper. Buy ASTM B SPECIFICATION FOR SILVER-COATED SOFT OR ANNEALED COPPER WIRE from SAI Global.
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Allow to cool and the precipitate to settle. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Tensile strength test, resistivity test, weight of coating, and dimensional measurements shall be performed to conform to the requirements specified.
However, any individual production unit, the specimen from which failed the weight criteria, shall be rejected. Link to Active This link will always route to the current Active version of the standard. NOTE 7—In general, tested values of tensile strength are increased and tested values of elongation are reduced with increase of speed of the moving head of the testing machine in the tension testing of copper wire.
If only one specimen fails to meet the weight criteria, four additional specimens from the lot shall be tested, all of which shall conform to the weight criterion. This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment. This abstract is a brief summary of the referenced standard. Tests of soft wire made at speeds of moving head which under no-load conditions are not greater than 12 in.
Tensile strength test, resistivity test, weight of coating, and dimensional measurements shall be performed to conform to the requirements specified. No attention shall be paid to blackening within 0.
ASTM B – 12() – Standard Specification for Silver-Coated Soft or Annealed Copper Wire
Materials and Manufacture 4. From each unit, one test specimen of sufficient length shall be removed for the performance of the required test.
The purchaser may accept certi? Failure to meet this requirement shall constitute v298 to meet the packaging conformance criterion. Government see S1, S2, and S3. After daily use or after a series of tests have been completed, return the test solution to a re-use storage bottle, and rinse the beaker thoroughly with water and dry it.
F Standard Specification for Driven Fasteners: Print 1 2 3 4 5 page sstarting from page current page. It is also equivalent, for example, to 1.
Wire whose coating weight corresponds to a axtm less than 40? For ease of comparison, the thickness of coating for these classes has been included in Table 1 Explanatory B98 4. Failure to meet this requirement shall constitute failure to meet the dimensional conformance criterion.
ASTM B – 07 Standard Specification for Silver-Coated Soft or Annealed Copper Wire
ASTM g298 not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. There are thickness testing machines available that can be used to perform this measurement. For all other properties values stated in inch-pound units are to be regarded as the standard.
Joints made after plating shall not be allowed to remain in the? Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. Failure b2298 more than two specimens shall constitute failure to meet the continuity criterion. Failure of more than one specimen shall constitute failure to meet the weight criteria.
ASTM B298 – 12(2017)
Essentially, therefore, the electronic thickness tester embodies a miniature reverse-current plating cell in which the piece to be tested is the anode and the cell itself is the cathode.
The continuity of the coating shall be determined on representative samples taken before stranding or insulating and shall be determined by the sodium polysul? Active view current version of standard. B Standard Specification for Refined Lead. No items in cart. Adjust the arm so that the wire is in the approximate center of the beaker.
Take care to avoid abrasion by the cut ends. If there are failures, but the number of these do not exceed the allowable defect number, c2 Table 2for the respective number of units in the sample, a second sample equal to n2 shall be taken and the total defects of the n plus n2 units shall not exceed the allowable defect number, c2. The silver-coated wires are classified according to the total weight of the coated wires, namely; Class A, B, C, D, and E.
NOTE 12—Principle of Operation of the Electronic Thickness Tester— The unit operates by anodically deplating a small surface area of the specimen in a cell containing the test solution. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
For specific precautionary statements see 8. Therefore, the requirement that the solution be tested by observing its blackening effect on a bright v298 wire is signi? The equivalent resistivity values in Table 4 were derived from the fundamental IEC value 1? The following precautionary caveat pertains only to the test method section of this specification: This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment.
Historical Version s – view previous versions of standard.
NOTE 10—A lot should comprise material taken from a product regularly meeting the requirements of this speci? When the test v298 complete the instrument will turn off. The above named apparatus and reagent is the product of Kocour Company, So. Qstm your personal account email address to request a password reset: The result will sstm the thickness of the plating in microinches.
However, in the case of heavy coatings the results obtained by the use of this equation will indicate a slightly higher percent weight than is actually present.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Last previous edition approved in as B — 99e1.