ASTM B488 PDF
Thank you for visiting the Advanced Plating Technologies Specification Database . Below is a technical summary of specification ASTM B from ASTM for. Our gold plating services comply with different categories of specifications, such as MIL-G, ASTM B, and AMS Gold plating compliant to. Accurate Precision Plating has 50 years experience performing gold plating services under the ASTM B certification & standard. Call today!.
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They must be smooth and as free of scratches, gouges, nicks, and similar imperfections as possible.
When plated parts are used in mating applications, the maximum thickness shall not exceed the tolerance speci? Iron, nickel and cobalt combined shall be less than 0. Coatings shall be classified into types, which characterize minimum purity, and codes, which designate Knoop hardness.
All other metals, excluding potassium and nitrogen, shall be considered impurities and shall not be present in amounts greater than 0. It is soluble in water and forms carbonic acid that ionizes and is at equilibrium at 0. Nonmagnetic Coatings on Magnetic Basis Metals. Variation in the coating thickness from point to point on a coated article is an inherent characteristic of electroplating processes.
This specification establishes the requirements for electrodeposited gold coatings for engineering applications, employed specifically for their corrosion and tarnish resistance including resistance to fretting corrosion and catalytic polymerizationbondability, low and stable contact resistance, solderability, and infrared reflectivity.
A suggested water extract conductivity test method uses a procedure in accordance with Test Methods D, Method A. If the basis metal is scratched or rough, it may be necessary to level the surface by processes such as electropolishing, chemical polishing, or the application of a self-leveling nickel or copper undercoating before gold electroplating.
Any such defects on signi?
ASTM B488 Gold Plating Standard
It is customary that allowance for plated coatings be included within the part tolerance. The thickness of an underplating is usually greater than 1? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Warning—Do not store activated carbon in areas in which vapors from solvents and other chemicals may contaminate the carbon. Last previous edition approved in as B — 01 e The test must yield a numerical value and certain statistical requirements must be met.
Historical Version s – view previous versions of standard. All our processes are certified to ISO This standard does not purport to address all of the safety concerns, if any, associated with its use.
Almost all gold electrodeposits will contain potassium, carbon and nitrogen that are occluded or precipitated in the deposit. 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.
Several types of coatings, differing in gold purity and hardness, are covered by this specification. No separation of the coating from the substrate shall occur.
Values provided in parentheses are for information only. Work Item s – proposed revisions of this standard.
Deposit purity should be determined on samples at plating conditions representative of actual production. Other calibration standards for gold are generally certi? Guide B provides a large number of plans and qstm gives guidance in the selection of a plan.
In a closed polyethylene bottle, the equilibrated water will remain in the range from 0.
ASTM B Plating Specification | Gold Plating Service | General Metal Finishing
Individual metal impurities shall not be present in a quantity greater than 0. 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.
Special racks may involve the use of conforming, auxiliary, bipolar electrodes, or nonconducting b4488. When the work load is h488, each addition should be based on bath analyses. Nickel underplatings are also applied for other reasons see Appendix X6.