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ASTM B840-99(2004)

Historical Reaffirmation

Standard Specification for Electrodeposited Coatings of Zinc Cobalt Alloy Deposits

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1.1 This specification covers the requirements for electrodeposited zinc cobalt alloy coatings on metals.

1.2 The following precautionary caveat pertains to the test method portion only, Section 8, 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 and health practices and determine the applicability of regulatory limitations prior to use.


This specification covers the requirements for electrodeposited zinc cobalt alloy coatings on metals. The coating class is Class 1 and five coating types are Type a, Type b, Type c, Type d, and Type e. The metal to be plated shall be subjected to such cleaning, pickling, and electroplating procedures. Coating requirements include: substrate, nature of coating, appearance, thickness, adhesion, corrosion resistance, and pre- and post-coating treatments of iron and steel for reducing the risk of hydrogen embrittlement. Adhesion, porosity, corrosion resistance, or appearance tests shall be made.


SDO ASTM: ASTM International
Document Number B840
Publication Date Aug. 1, 2004
Language en - English
Page Count 5
Revision Level 99(2004)
Supercedes
Committee B08.06
Publish Date Document Id Type View
Nov. 15, 2022 B0840-22 Revision
May 1, 2015 B0840-15 Revision
Nov. 10, 1999 B0840-99 Revision
Sept. 1, 2009 B0840-99R09 Reaffirmation
Aug. 1, 2004 B0840-99R04 Reaffirmation