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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Finishes that show imperfections during subsequent manufacturing operations may be rejected.
Hence, in most cases, the average coating thickness on an article will be greater than the speci? NOTE 2—The thickness of the electrodeposit in holes, corners, recesses, and other areas where thickness cannot be controlled under normal electroplating conditions shall be speci?
ASTM B689 – 97(2018)e1
This must be considered if the parts will be subjected to repeated applications of complex load patterns v689 service. 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 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.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. NOTE 4—Good adhesion of electroplated nickel to stainless steels and high alloy steels usually requires a preliminary strike of electrodeposited nickel. The purchaser may similarly require that a report of the test results be furnished.
A source of oil-free air shall be available ast aerate the water with agitation vigorous enough to prevent air bubbles from clinging to signi?
Bright Nickel Plating
Oil-free air pressure may be used to speed the drying. The test is very sensitive to the super? The purchaser needs to state whether the test is to be considered destructive or non-destructive. Originally approved in Therefore, the coating thickness will have to exceed the speci? The size of the sample and the criteria of compliance are determined by the application of statistics. NOTE 9—Some contemporary packaging materials may emit fumes that are deleterious to the surface of the coating.
Current edition approved Feb. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Also, reduction in the atsm life of nickel-electroplated steels can be reduced by considering the relations among the variables that in?
Thickness measurements with the microscopical method can show large 6b89 on these rough pro? The recommended practices for the preparation of and electroplating on stainless steels and nickel alloys are given in Practices B and Brespectively.
The specimen should duplicate the characteristics of the article 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 b69 the electrodeposit are given in Guide B Parts having a hardness greater than 35 HRC equivalent to a tensile strength of MPa or greater that b6899 been acid-stripped for recoating shall be rebaked for embrittlement relief see 6.
Bright Nickel Plating Service per ASTM B & AMS-QQ-N | Accurate Precision Plating
Three standards, Test Method BGuide B asrm, and Methods B contain sampling plans that are designed for the sampling inspection of coatings.
Contact marks shall be minimized in size and frequency. The criterion of acceptance is that thickness on the specimen that corresponds to the required thickness on the article. Nickel Alloys; Chapter Industry Sector or Speci?
Nickel thickness generally exceeds 5? There are practical limits to nickel thickness and uniformity xstm thickness distribution caused by the size and geometric con? The procedure is known as sampling inspection. The buyer and seller may agree on the plan or plans to be used. The boundaries of electroplating that cover only a portion of the surface shall, after?
NOTE 15—Usually, when a collection of coated articles, the inspection lot 8. Test Method B X-ray is instrument-dependent with regard to accuracy with increasing nickel thicknesses. B — 97 Reapproved Standard Speci?
Understanding ASTM B Engineering Nickel Coatings
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Nickel thickness generally exceeds ? It is recommended that b6889 speci? For the effect of such additives, see Section 4 and Annex A3. The buyer and the seller may agree on the plan or plans to be used. When Guide B is speci?
Test Method B contains four sampling plans, three for use with tests that are non-destructive and one when they are destructive. Rejection shall be reported to the producer or supplier promptly, and in writing.