ASTM_B_852_-_16.pdf

Designation:B85216Standard Specification forContinuous Galvanizing Grade(CGG)Zinc Alloys for Hot-Dip Galvanizing of Sheet Steel1This standard is issued under the fixed designation B852;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers grades of zinc alloys,com-monly known as Continuous Galvanizing Grade(CGG)alloysthat contain aluminum,or aluminum and lead,that are used incontinuous hot-dip galvanizing of steel sheet.The composi-tions for CGG grades made from primary zinc are shown inTable 1.Exceptions for grades made from secondary zinc arefound in footnote C.1.2 CGG alloys specified in Specification B852 are used incontinuous hot-dip galvanizing of steel sheet to produceproduct,as specified in Specification A653/A653M.1.3 Other alloy compositions not included in B852,and asmay be agreed upon between the producer and the user,may beused for continuous galvanizing.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateSafety Data Sheet(SDS)for this product/material as providedby the manufacturer,to establish appropriate safety and healthpractices,and determine the applicability of regulatory limi-tations prior to use.2.Referenced Documents2.1 ASTM Standards:2A653/A653M Specification for Steel Sheet,Zinc-Coated(Galvanized)or Zinc-Iron Alloy-Coated(Galvannealed)by the Hot-Dip ProcessB897 Specification for Configuration of Zinc and ZincAlloyJumbo,Block,Half Block,and Slab IngotB899 Terminology Relating to Non-ferrous Metals and Al-loysB949 Specification for General Requirements for Zinc andZinc Alloy ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE88 Practice for Sampling Nonferrous Metals and Alloys inCast Form for Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)E536 Test Methods for Chemical Analysis of Zinc and ZincAlloysE634 Practice for Sampling of Zinc and Zinc Alloys bySpark Atomic Emission Spectrometry2.2 ISO Standards:3ISO 3815-1 Zinc and zinc alloys Part 1:Analysis of solidsamples by optical emission spectrometryISO 3815-2 Zinc and zinc alloys Part 2:Analysis byinductively coupled plasma optical emission spectrometry3.Terminology3.1 Terms shall be defined in accordance with TerminologyB899.4.Ordering Information4.1 Orders for zinc alloy ingot under this specification shallinclude information as specified in Specification B949.5.Materials and Manufacture5.1 The producer shall use care that each shipment of CGGalloy be as uniform in quality as possible.6.Chemical Requirements6.1 CGG alloy shall conform to the requirements of Table 1as determined by chemical analysis by the producer on samplestaken at his plant(see Section 9).1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.04 on Zinc and Cadmium.Current edition approved May 1,2016.Published July 2016.Originally approvedin 1994.Last previous edition approved in 2014 as B852 14.DOI:10.1520/B0852-162For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.2 Chemical requirement procedures shall be in compli-ance with the provisions of Specification B949.7.Size and Shape7.1 CGG alloy may be ordered as either jumbos,blocks,orslabs.7.1.1 CGG alloy metal may be ordered in jumbos or blocks,as specified in Specification B897.7.1.2 Jumboslarge castings of zinc or zinc alloy designedfor handling by mechanical equipment.A jumbo usuallyweighs about 2400 lb(1087 kg).Jumbo shapes may vary,depending on the producers practice,and may be referred to asstrip jumbos or as block jumbos.The nominal weight,dimensions,and location of holes or openings shall be asagreed upon between the producer and the customer.7.1.3 Slabssmaller castings of zinc or zinc alloy designedfor manual handling,but often handled by mechanical equ