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ASTM B488-18

Standard Specification for Electrodeposited Coatings of Gold for Engineering Uses

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NORM herausgegeben am 1.8.2018

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Informationen über die Norm:

Bezeichnung normen: ASTM B488-18
Ausgabedatum normen: 1.8.2018
SKU: NS-904411
Zahl der Seiten: 8
Gewicht ca.: 24 g (0.05 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM

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Metallic coatings

Die Annotation des Normtextes ASTM B488-18 :

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 polymerization), bondability, low and stable contact resistance, solderability, and infrared reflectivity. This specification does not cover gold coatings produced from autocatalytic, immersion, and vapor deposition. Coatings shall be classified into types, which characterize minimum purity, and codes, which designate Knoop hardness. Coatings shall be sampled, tested and conform to specified requirements as to purity, hardness, appearance, thickness, mass per unit area, ductility, adhesion (assessed by either bend, heat, or cutting test), and integrity (including gross defects, mechanical damage, and porosity).

Keywords:

engineering coatings, engineering gold, gold, gold coatings, gold electrodeposits, gold platings, underplate ,, ICS Number Code 25.220.40 (Metallic coatings)

Ergänzende Informationen

1. Scope

1.1 This specification covers requirements for electrodeposited gold coatings that contain not less than 99.00 mass % gold and that are used for engineering applications.

1.2 Specifically excluded from this specification are autocatalytic, immersion, and vapor deposited gold coatings.

1.3 Gold coatings conforming to this specification are employed for their corrosion and tarnish resistance (including resistance to fretting corrosion and catalytic polymerization), bondability, low and stable contact resistance, solderability, and infrared reflectivity. Several types of coatings, differing in gold purity and hardness, are covered by this specification.

1.4 The values stated in SI units are to be regarded as the standard. Values provided in parentheses are for information only.

1.5 The following hazards caveat pertains only to the test methods section, Section 9, of this specification: 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

B568-98(2021)	Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry
B571-23	Standard Practice for Qualitative Adhesion Testing of Metallic Coatings
B578-21	Standard Test Method for Microindentation Hardness of Electroplated Coatings
B602-21	Standard Guide for Attribute Sampling of Metallic and Inorganic Coatings
B678-23	Standard Test Method for Solderability of Metallic-Coated Products
B697-88(2021)	Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings
B183-18(2022)	Standard Practice for Preparation of Low-Carbon Steel for Electroplating
B242-99(2020)	Standard Guide for Preparation of High-Carbon Steel for Electroplating
B253-11(2022)	Standard Guide for Preparation of Aluminum Alloys for Electroplating
B254-92(2020)e1	Standard Practice for Preparation of and Electroplating on Stainless Steel (Includes all amendments and changes 12/7/2020).
B281-88(2019)e1	Standard Practice for Preparation of Copper and Copper-Base Alloys for Electroplating and Conversion Coatings (Includes all amendments and changes 5/14/2019).
B322-99(2020)e1	Standard Guide for Cleaning Metals Prior to Electroplating (Includes all amendments and changes 12/7/2020).
B343-92a(2020)	Standard Practice for Preparation of Nickel for Electroplating with Nickel (Includes all amendments and changes 12/4/2020).
B374-21	Standard Terminology Relating to Electroplating
B481-68(2019)	Standard Practice for Preparation of Titanium and Titanium Alloys for Electroplating
B482-85(2019)	Standard Practice for Preparation of Tungsten and Tungsten Alloys for Electroplating
B487-20	Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
B489-85(2023)	Standard Practice for Bend Test for Ductility of Electrodeposited and Autocatalytically Deposited Metal Coatings on Metals
B499-09(2021)e1	Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals (Includes all amendments and changes 5/18/2021).
B504-90(2023)	Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method
B507-14(2021)	Standard Practice for Design of Articles to Be Electroplated on Racks
B542-13(2019)	Standard Terminology Relating to Electrical Contacts and Their Use
B735-16(2022)	Standard Test Method for Porosity in Gold Coatings on Metal Substrates by Nitric Acid Vapor
B741-95(2000)	Standard Test Method for Porosity In Gold Coatings On Metal Substrates By Paper Electrography (Withdrawn 2005)
B748-90(2021)	Standard Test Method for Measurement of Thickness of Metallic Coatings by Measurement of Cross Section with a Scanning Electron Microscope
B762-21	Standard Guide of Variables Sampling of Metallic and Inorganic Coatings
B765-03(2023)	Standard Guide for Selection of Porosity and Gross Defect Tests for Electrodeposits and Related Metallic Coatings
B799-95(2020)	Standard Test Method for Porosity in Gold and Palladium Coatings by Sulfurous Acid/Sulfur-Dioxide Vapor
B558-79(2019)	Standard Practice for Preparation of Nickel Alloys for Electroplating
B567-98(2021)	Standard Test Method for Measurement of Coating Thickness by the Beta Backscatter Method
F390-11	Standard Test Method for Sheet Resistance of Thin Metallic Films With a Collinear Four-Probe Array (Withdrawn 2020)
D3951-18(2023)	Standard Practice for Commercial Packaging
B809-95(2018)	Standard Test Method for Porosity in Metallic Coatings by Humid Sulfur Vapor (“Flowers-of-Sulfur”)
D1125-23	Standard Test Methods for Electrical Conductivity and Resistivity of Water

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