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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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?

Bright Nickel Plating

Last previous edition approved in as B — ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. The specimen should duplicate the characteristics of the article that in? The size of the sample and the criteria of compliance are determined by the application of statistics.

The part fails if more than the number of pores aatm It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Test Method B X-ray is instrument-dependent with regard to accuracy with increasing nickel thicknesses.

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Just before use, immerse the dry? 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. Originally approved in 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.

Rejection and Rehearing 9. B — 97 Reapproved Standard Speci? The test is very sensitive to the super? Methods B contains several plans and also gives instructions for calculating plans to meet special needs. B89 standard has been approved for use by agencies of the Department of Defense.

When they are desired they must be stated in the purchase order see 5. 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.

Visual defects are de? The test must yield a numerical value and certain statistical requirements must be met.

Adhesion tests may at times fail to detect adhesion failure; subsequent fabrication may reveal poor or inadequate adhesion, which shall be cause for rejection.

If they do not, Test Method B identi? In rack plating, the specimen shall be racked in asrm same way with the same distance from and orientation with the anodes and other items in the process as the article it represents.

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ASTM B Nickel Coating | General Metal Finishing

Industry Sector or Speci? Therefore, the coating thickness will have to exceed the speci? NOTE 13—Adhesion is in? The boundaries of electroplating that cover only a portion of the surface shall, after?

The purchaser may similarly require that a report of the test wstm be furnished. 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

The test selected should take into consideration the size, shape, or thickness of the part. Contact marks shall be minimized in size and frequency. 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.

Coatings shall be sampled, tested, and conform accordingly to specified requirements as to appearance, thickness measured either destructively by microscopical or coulometric method, or nondestructively by magnetic or X-ray methodadhesion examined either by bend, file, heat and quench, or push testporosity assessed either by hot water, ferroxyl, or flowers of sulfur testworkmanship, and hydrogen embrittlement relief.