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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ASTM B rp Your aetm are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? The specimen should duplicate the characteristics of the atm that in?
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. NOTE 8—The coating thickness requirements of this speci?
Electrodeposited nickel that is to be? Rejection and Rehearing 9. NOTE 9—Some contemporary packaging materials may emit fumes that are deleterious to the surface of the coating. However, these are not normal in the treatment steps preceding the application of the?
It is recommended that the speci? This specification covers the requirements for electroplated nickel coatings applied to metal products for engineering applications for example, for use as a buildup for mismachined or worn partsfor electronics applications including as underplates in contacts or interconnectionsand in certain joining applications.
ASTM B If they do not, Methods B identi? 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.
The test selected should take into consideration the size, shape, or thickness of the part. 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.
Rejection shall be reported to the producer or supplier promptly, and in writing.
For the effect of such additives, see Section 4 and Annex A3. Also refer to Guide B for more information. 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 the effect of such additives, see Section bb689 and Annex A3. The test is very sensitive to the super?
Therefore, if all of the articles in a production lot are to meet the thickness requirement, the average coating thickness aetm the production lot as a whole will be greater that the average necessary to assure that a single article meets the requirement.
NOTE 14—When both destructive and non-destructive tests exist for the measurement of a characteristic, the purchaser needs to state which is to be used so that the proper sampling plan is selected.
The inspection lot is then classi?
This must be considered if the parts will be subjected to repeated applications of complex load patterns in service. Test Method B Magnetic should not be used for thicknesses less than 10?
A source of oil-free air shall be available to aerate the water with agitation vigorous enough to prevent air bubbles from clinging to signi? Oil-free air pressure may be used to speed the drying.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Coatings shall be available in any one of the following types: A superscript epsilon e indicates an editorial change since the last revision or reapproval. Identify the substrate material by alloy identi?
Bright Nickel Plating
NOTE 3—When a deposit of controlled thickness is required in holes, corners, recesses, and similar areas, special racking, auxiliary anodes or shielding will be necessary. NOTE 2—The thickness of the electrodeposit in holes, corners, recesses, and other areas where thickness cannot be controlled under normal electroplating b698 shall g689 speci?
Stress relieving after stripping is not necessary if the stripping is done anodically in an alkaline solution. Variation in the coating thickness adtm point to point on a coated article is an inherent characteristic of the electroplating process. Industry Sector or Speci? Test Method B X-ray is instrument-dependent with regard to accuracy with increasing nickel thicknesses.
A test may destroy the coating but in a non-critical area; or, although it may destroy the coating, a tested part can be reclaimed by stripping and recoating. Hence, in most cases, the average coating thickness on aetm article will be greater than the speci? The buyer and the seller may agree on the plan or plans to be used. Three standards, Test Method BGuide Band Methods B contain sampling plans that are designed for the sampling inspection of coatings.
ASTM B – 97()e1 Standard Specification for Electroplated Engineering Nickel Coatings
B — 97 Reapproved Standard Speci? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. A number in parentheses indicates the year of last reapproval.
Codeposition of particles in nickel aastm, for example, silicon carbide, mica, thoria 1, 3, 4, 5 Nickel thickness generally exceeds ? Link to Active This link will always route to the current Active version of the standard. Historical Version s – view previous versions of standard. Allow 10 min contact time for the test period see Annex A2. The boundaries of electroplating that cover only a portion of the surface shall, after?
It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine zstm applicability of regulatory limitations prior to use.