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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Allow 10 min contact time for the test period see Annex A2.

ASTM B – 97()e1 – Standard Specification for Electroplated Engineering Nickel Coatings

Methods B satm several plans and also gives instructions for calculating plans to meet special needs. Parts having a hardness greater than 35 HRC equivalent to a tensile strength of MPa or greater that have been acid-stripped for recoating shall be rebaked for embrittlement relief see 6. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item asfm in this standard. Last previous edition approved in as B — The size of the sample and the criteria of compliance are determined by the application of statistics.

Also, reduction in the fatigue life of nickel-electroplated steels can be reduced by considering the relations among the variables that in?

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Alloy processes include nickel-phosphorus and nickel-cobalt. If they do not, Test Method B identi?

ASTM B-689

Three standards, Test Method BGuide Band Methods B contain sampling plans that are designed for the sampling inspection of coatings. The thickness specimen need not be carried through the complete process with the represented article.

The inspection lot is then classi? Identify the substrate material by alloy identi? Shot peening of signi? At the end of the test period, remove the part from the hot water, and allow the part to drain and dry.

For the effect of such additives, see Section 4 and Annex A3. This standard has been approved for use by agencies of the Department of Defense. Class 5 25 50 X Minimum Nickel Thickness,?

Understanding ASTM B 689 Engineering Nickel Coatings

NOTE 9—Some contemporary packaging materials may emit fumes that are deleterious to the surface of the coating. Current edition approved Feb.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

ASTM B This abstract is a brief summary of the referenced standard.

ASTM does not give any warranty express or implied or bb689 any representation that the contents of this abstract are accurate, complete or up to date. Black spots and red rust indicate basis metal corrosion or porosity.

The part fails if more than the number of pores speci? It is noncorrosive to nickel. Methods B can be used only for coating requirements that have numerical limit, such as coating thickness. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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Variation in the coating thickness from point to point on a coated article is an inherent characteristic of the electroplating process. The criterion of acceptance is that thickness on the specimen that corresponds to the required thickness on the article.

Understanding ASTM B Engineering Nickel Coatings

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. Metal parts shall undergo pre- and post-coating treatments to reduce the risk of hydrogen embrittlement, and peening.

The pH of the water shall be maintained between 6. Nonmagnetic Coatings on Magnetic Basis Metals.