Hello. Sign In
Standards Store


1995 Edition, April 15, 1995

Complete Document

Standard Test Method for Porosity in Gold Coatings on Metal Substrates by Paper Electrography

Includes all amendments and changes through Reapproval Notice

View Abstract
Product Details
Document History

Detail Summary

Not Active, See comments below

Additional Comments:
Price (USD)
Single User
In Stock
PDF + Print
In Stock
$113.90 You save 15%
Add to Cart

People Also Bought These:

ASTM A480/A480M
ASTM A240/A240M

Product Details:

  • Revision: 1995 Edition, April 15, 1995
  • Published Date: January 2000
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 5
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

1. Scope

1.1 This test method covers equipment and techniques for determining porosity in gold coatings, particularly electrodeposits and clad metals used on electrical contacts.

1.2 This test method is designed to show whether the porosity level is less or greater than some value which by experience is considered by the user to be acceptable for the intended application.

1.3 This test method is suitable for flat surfaces, or with appropriate fixtures, for gently curved surfaces.

1.4 A variety of other porosity testing methods are described in Guide B 765 and in the literature. Detailed critical reviews of porosity testing are also available. Other porosity test methods are B735, B798, B799, and B809.

1.5 This test method is specifically designed for use with gold coatings (>95 % gold) on substrates of copper and nickel and their alloys. Although not covered in this standard, variations of this test method may be found useful in evaluating coatings other than gold.

1.6 The values stated in SI units are to be regarded as standard. The values in parenthesis are for information only.

1.7 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 and health practices and determine the applicability of regulatory limitations prior to its use. For a specific precautionary statement, see Note 1.