ASTM B (Reapproved )_能源/化工_工程科技_专业资料。 Designation: B – 97 (Reapproved ) Standard Speci?cation for. This ASTM B specification covers the requirements for electroplated nickel coatings applied to metal products for engineering applications. Bright Nickel Plating. ASTM B, AMS-QQ-N bright nickel plated electrical components. At APP we do bright nickel plating, it is widely used for decorative.
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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. The buyer and seller may atm on the plan or plans to be used.
The test selected should take into consideration the size, shape, or thickness of the part.
Rejection and Rehearing 9. If not, it shall be introduced into the process at the point where the coating is applied and it shall be carried through all steps that have a bearing on the coating thickness.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. b68
Understanding ASTM B 689 Engineering Nickel Coatings
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Methods B can be used only for coating requirements that have numerical limit, such as coating thickness.
In addition, the average coating thickness on adtm will vary from article to article within a production lot. Current edition approved Feb. NOTE 11—When special test specimens are used to represent coated articles in a thickness test, the specimens will not necessarily have the same thickness and thickness distribution as the articles unless the specimens and the articles are of the same general size and shape. When electroplated nickel is required to have higher hardnesses, greater wear resistance, certain residual stress values and certain leveling characteristics, sulfur and other substances are incorporated in the nickel deposit through the use of certain addition agents in the electroplating solution.
ASTM B (Reapproved )_百度文库
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Test Method B contains four sampling plans, three for use ast, tests that are non-destructive and one when they are destructive.
NOTE 10—Test specimens often b69 used to represent the coated articles in a test if the articles are of a size, shape, or material that is not suitable for the test, or if it is preferred not to submit articles to a destructive test because, for example, the articles are expensive or few in number.
The recommended practices for the preparation of and electroplating on stainless steels and nickel alloys are given in Practices B and Brespectively.
For the effect of such additives, see Section 4 and Annex A3. Visual defects are de?
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. G689 previous edition approved in as B — Cobalt salts are sometimes added to the plating solution to produce b69 nickel alloy deposits.
If they do not, Methods B identi? It is the responsibility of the user of this asm to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. In rack plating, the specimen shall be racked in the same way with the same distance from and orientation with the anodes and other items in the process as the article it represents.
NOTE 15—Usually, when a collection of coated articles, the inspection lot 8. Nonmagnetic Coatings on Magnetic Basis Metals. Historical Version s – view previous versions of standard.
The purchaser may similarly require that a report of the test results be furnished. The procedure is known as sampling inspection. Electrodeposited nickel that is to be? Hence, in most cases, the average coating thickness on an article will be greater than the speci?
Industry Sector or Speci? Imperfections and variations in appearance in the coating that arise from surface conditions of the basis metal scratches, pores, roll marks, inclusions, etc. Also refer to Guide B for more information. This temperature shall be maintained during the min test period.
Nickel thickness generally exceeds 5? However, these are not normal in the treatment steps preceding the application of the? Identify the substrate material by alloy identi? Typical mechanical properties of nickel electroplated from these baths, and the combined effect of bath operation and solution composition variables on the mechanical properties of the electrodeposit are given in Guide B NOTE 2—The thickness of the electrodeposit in holes, corners, recesses, and other areas where thickness cannot be controlled under normal electroplating conditions shall be speci?