ASTM B689 PDF
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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Bright Nickel Plating
NOTE 12—Since many factors in? Class 5 25 50 X Minimum Nickel Thickness,?
The thickness specimen need not be carried through the complete process with the represented article. This standard is subject b68 revision at any time by the responsible technical committee and must be reviewed every? Remove the papers at the end of the contact period, and place at once into solution C. The buyer and seller may agree on the plan or plans to be used. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Additives required for pH control shall be xstm to nickel and shall be approved by the purchaser, for example, pH can be adjusted by introducing CO2 ast by additions of H2SO4 or acetic acid, or NaOH. Three standards, Test Method BGuide Band Methods B contain sampling plans that are designed for the sampling inspection of coatings.
The test must yield a numerical value and certain statistical requirements must be met. NOTE 10—Test specimens often are 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.
Last previous edition approved in as B — Oil-free air pressure may be used to speed the drying. Codeposition of particles in nickel matrices, for example, silicon carbide, mica, thoria 1, 3, 4, 5 Nickel thickness generally exceeds ?
Bright Nickel Plating Service per ASTM B & AMS-QQ-N | Accurate Precision Plating
NOTE 4—Good adhesion of electroplated nickel to stainless steels and high alloy steels usually requires a preliminary strike of electrodeposited nickel. NOTE 8—The coating thickness requirements of this speci? Cobalt salts are sometimes added to the plating solution to produce harder nickel alloy deposits.
The pH of the water shall be maintained between 6. Allow 10 min contact time for the test period see Annex A2.
The part fails if more than the number of pores speci? 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 Type 1, coatings electroplated from solutions not containing hardeners, brighteners, or stress control additives; Type 2, electrodeposits used at moderate temperatures, and contain sulfur or other codeposited elements or compounds that are present to increase the hardness, refine grain structure, or control internal stress; and Type 3, electroplates containing dispersed submicron particles such as silicon carbide, tungsten carbide, and aluminum oxide that are present to increase hardness and wear resistance at specified temperatures.
Understanding ASTM B 689 Engineering Nickel Coatings
Hence, in most cases, the average coating thickness on an article will be greater than the speci? The specimen should duplicate the characteristics of the article that in? Electrodeposited nickel that is to be? Molds, dies, shafts, housings, and precision?
v689 The inspection lot is then classi? Also, reduction in the fatigue life of nickel-electroplated steels can be reduced by considering the relations among the variables that in?
Nickel thickness generally exceeds 5? At the end of the test period, remove the part from the hot water, and allow the part to drain and dry. Identify the substrate material by alloy identi? The boundaries of electroplating that cover only a portion of the surface shall, after?
Guide B provides a large number of plans and also gives guidance in the selection of a plan.
ASTM B – 97()e1 Standard Specification for Electroplated Engineering Nickel Coatings
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Alloy processes include nickel-phosphorus and nickel-cobalt.
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. Nickel thickness generally exceeds ?
NOTE 3—When a deposit of controlled thickness is required in holes, corners, recesses, and similar areas, special racking, auxiliary anodes or shielding axtm be necessary.
Visual defects are de? Nickel Alloys; Chapter Test Method B Magnetic should not be used for thicknesses less than 10? Contact marks shall be minimized in size and frequency. 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. Other—washers, fasteners, plastic extrusion disks, shaft, gears 10 The boldface numbers in parentheses refer to the list of references at the end of this speci?
In addition, the average coating thickness on articles will vary from article to article within a production lot. NOTE 9—Some contemporary packaging materials may emit fumes that are deleterious to the surface of the coating. When Guide B is speci?