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ASTM B252-92(2014)

Historical Reaffirmation

Standard Guide for Preparation of Zinc Alloy Die Castings for Electroplating and Conversion Coatings

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1.1 This guide is intended as an aid in establishing and maintaining a procedure for preparing zinc alloy die castings for electroplating and conversion coatings. It is primarily intended for the preparation of Alloys UNS Z33521 (AG-40A) and UNS Z35530 (AC-41A) (Specification B86) for electroplating with copper, nickel, and chromium (Specification B456).

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.


4.1 The performance and quality of electroplated or conversion-coated zinc alloy die casting depends upon the surface cleanliness and condition. Various metals are electroplated or conversion coatings are established on zinc alloys for decorative or engineering finish. The common electroplates applied are usually copper, nickel, and chromium for decorative and functional uses. The common conversion coatings applied are phosphates, chromates, and anodized coatings. Electroplated zinc die castings and conversion coatings on zinc die castings are used in many industries such as the marine, automotive, plumbing fixtures, and appliance industries.

SDO ASTM: ASTM International
Document Number B252
Publication Date Nov. 1, 2014
Language en - English
Page Count 5
Revision Level 92(2014)
Supercedes
Committee B08.02
Publish Date Document Id Type View
Nov. 1, 2020 B0252-92R20 Reaffirmation
Nov. 1, 2014 B0252-92R14 Reaffirmation
Sept. 1, 2009 B0252-92R09 Reaffirmation
April 1, 2004 B0252-92R04 Reaffirmation
Jan. 1, 1998 B0252-92R98 Reaffirmation