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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Area at 20 The following editions for this book are also available See Explanatory Note 2. The time required to dissolve the plating on the test spot proportional to the thickness of the deposit; by correlating the area of the test spot with the current used to strip the plating, the counter is made to read directly in units of thickness.
There are thickness testing machines available that can be used to perform this measurement. Examine the specimen with the unaided eye normal spectacles excepted against a white background. Land Use and Development. The wire shall be bright and free from all imperfections not consistent with the best commercial practice.
For wire whose nominal diameter is more than 0. The continuity of the coating shall be determined on representative samples taken before stranding or insulating and shall be determined by the sodium polysul? A portion of the HCl solution having a volume of mL shall be considered exhausted if it fails to remove within 15 s the discoloration of the silver due to the polysul?
It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
ASTM B298 – 12(2017)
F Standard Specification for Driven Atm The extent to which the solutions become exhausted depends upon the number and size of the parts tested, as well as upon the thickness of the deposits which are stripped. See Table 1 for thickness of coatings for the various classes of coating and wire sizes. They shall be tagged or marked to correspond with the coil, spool, or reel from which they were cut.
Therefore, the requirement that the solution be tested by observing its blackening effect on a bright copper wire is signi? The manufacturer shall afford the inspector representing the purchaser all reasonable facilities to satisfy him that the material is being furnished in accordance with this speci? This standard does not purport to address all of the safety concerns, if any, associated with its use.
The purchaser may accept certi? For all other properties values b2298 in inch-pound units are to be regarded as asttm standard. Inspection of individual lots of less than lb of wire cannot be justi?
Failure of a sample group from a lot to meet one or more of the following criteria shall constitute cause for rejection of the lot.
The elongation of wire whose nominal diameter is 0. If there are no failures, the lot conforms to this requirement. The silver-coated wires are classified according to the total weight of the coated wires, namely; Class A, B, C, D, and E. Cover the beaker, warm gently until solution is complete, and boil to expel brown fumes. Lower the wire into the beaker until the liquid level zstm exactly at the crayon mark.
ASTM B – Standard Specification for Silver-Coated Soft or Annealed Copper Wire
The anode efficiency is further maintained by providing agitation of the solution in the test cell. NOTE 12—Principle of Operation of the Electronic Thickness Tester— The unit operates by anodically deplating a astk surface area of the specimen in a cell containing the test solution.
Are you sure you want to empty the cart? The cell serves as cathode and the piece to be tested is the anode.
ASTM B – 12 Standard Specification for Silver-Coated Soft or Annealed Copper Wire
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment. No requirements for tensile strength are speci? It does not attack the plating unless current is? Enter your personal account email address to request a asstm reset: In the case of tests on soft or annealed copper wire, however, the effects of speed of testing are not pronounced.
Print 1 2 3 4 5 page sstarting from page bb298 page.
The wire shall be protected against damage in ordinary handling and shipping. No items in cart. These devices offer superior accuracy while performing the measurement in a variety of manners.
NOTE 2—The accuracy of the testing is reliant upon adherence to the procedures for testing that have been developed by the manufacturers as their standard test regimen.