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ASTM B488-18(2025)

Standard Specification for Electrodeposited Coatings of Gold for Engineering Uses
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ASTM B488-18(2025)

Standard Specification for Electrodeposited Coatings of Gold for Engineering Uses

PUBLISH DATE 2025
PAGES 9
ASTM B488-18(2025)

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).

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: This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

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.

SDO ASTM: ASTM International
Document Number B488
Publication Date May 15, 2025
Language en - English
Page Count 9
Revision Level 18(2025)
Supercedes
Committee B08.04
Publish Date Document Id Type View
May 15, 2025 B0488-18R25 Revision
Aug. 1, 2018 B0488-18 Revision
Oct. 1, 2011 B0488-11 Revision
Nov. 1, 2010 B0488-01R10E01 Revision
Nov. 1, 2010 B0488-01R10 Revision
April 1, 2006 B0488-01R06 Revision
Oct. 10, 2001 B0488-95 Revision
Oct. 10, 2001 B0488-01E01 Revision
Oct. 10, 2001 B0488-01 Revision