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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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Historical Version s – view atsm versions of standard. Cobalt salts are sometimes added to the plating solution to produce harder nickel alloy deposits.

Remove the papers at the end of the contact period, and place at once into solution C. NOTE 4—Good adhesion of electroplated nickel to stainless steels and high alloy steels usually requires a preliminary strike of electrodeposited nickel.

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. When necessary, the signi? Rejection shall be reported to the producer or supplier promptly, and in writing.

Bright Nickel Plating Service per ASTM B & AMS-QQ-N | Accurate Precision Plating

The test selected should take into consideration the size, shape, or thickness of the part. The test must yield a numerical value and certain statistical requirements must be met. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Methods B contains several plans and also gives instructions for calculating plans to meet special needs. Also, reduction in the fatigue life of nickel-electroplated steels can be reduced by considering the relations among the variables that in? 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 Coatings shall be sampled, tested, and conform accordingly to specified requirements as to appearance, thickness measured either destructively by microscopical or g689 method, or nondestructively by magnetic or X-ray methodadhesion examined either by bend, file, heat and quench, or push testporosity assessed either by hot zstm, ferroxyl, or flowers of sulfur testworkmanship, and hydrogen embrittlement relief.

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If they do not, Test Method B identi? If they do not, Methods B identi?

It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. For the effect of such additives, see Section 4 and Annex A3. NOTE 15—Usually, when a collection of coated articles, the inspection lot 8.

The buyer and seller may agree on the plan or plans to be used.

Bright Nickel Plating

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.

Also refer to Guide B for more information. B — 97 Reapproved Standard Speci? Typical mechanical properties of nickel electroplated from these baths, and the combined ast, of bath operation and solution composition variables asrm the mechanical properties of the electrodeposit are given in Guide B Contact marks shall be minimized in size and frequency. The purchaser needs to state whether the test is to be considered destructive or non-destructive.

Therefore, the coating thickness will have asym exceed the speci? Cobalt salts are sometimes added to the plating solution to produce harder nickel alloy deposits. In case of dissatisfaction with the results of a test, the producer or supplier may make a claim for a rehearing. Thickness measurements with the microscopical method can show large differences xstm these rough pro?

Test Method B contains four sampling plans, three for use with tests that are non-destructive and one when they are destructive.

Understanding ASTM B 689 Engineering Nickel Coatings

The procedure is known as sampling inspection. In addition, the average coating thickness on articles will vary from article to article within a production lot. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

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NOTE 14—When both destructive and non-destructive tests exist adtm the measurement of a characteristic, the purchaser needs to state which is to be used so that the proper sampling plan is selected. The size of the sample and the criteria of compliance are determined by the application of statistics.

Molds, dies, shafts, housings, and precision?

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 does not give any warranty b6689 or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Nickel thickness generally exceeds 5? Hence, in most cases, the average coating thickness on an article will be greater than the speci? Other—washers, fasteners, plastic extrusion disks, shaft, gears 10 Bb689 boldface numbers in parentheses refer to the list of references at the end of this speci?

The recommended practices for the preparation of and electroplating on stainless steels and nickel alloys are given in Practices B and Brespectively. Nickel Alloys; Chapter The part fails if more than the number aztm pores speci?

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? When they are desired they must be stated in the purchase order see 5. The test is very sensitive to the super? Coatings shall be available in any one of the following types: Stress relieving after stripping is not necessary if b698 stripping is done anodically in an alkaline solution.