Standard Historical Last Updated: Dec 31, 2010 Track Document
ASTM B879-97(2003)e1

Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys

Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys B0879-97R03E01 ASTM|B0879-97R03E01|en-US Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys Standard new BOS Vol. 02.05 Committee B08
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Significance and Use

The processes described in this practice clean and provide a paint base for the finishing of magnesium and magnesium alloys. Service conditions will determine, to some degree, the specific process to be applied.

Scope

1.1 this practice covers a guide for metal finishers to clean and then provide a paint base for the finishing of magnesium and magnesium alloys using chemical conversion coatings. Where applicable (for example, aerospace) secondary supplementary coatings (for example, surface sealing) can be used (see Appendix X1).

1.2 Although primarily intended as a base for paint, chemical conversion coatings provide varying degrees of surface protection for magnesium parts exposed to indoor atmosphere either in storage or in service under mild exposure conditions. An example is the extensive use of the dichromate treatment (see 5.2) as a final coating for machined surfaces of die cast magnesium components in the computer industry.

1.3 The traditional numbering of the coating is used throughout.

1.4 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 use.

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Details
Book of Standards Volume: 02.05
Developed by Subcommittee: B08.07
Pages: 11
DOI: 10.1520/B0879-97R03E01
ICS Code: 77.120.20