1、Designation: B852 16Standard 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 rev
2、ision, 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 (
3、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 Specif
4、ication 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
5、 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.
6、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
7、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 Zinc AlloyJumbo, Block, Half Block, and
8、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 inC
9、ast 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:3
10、ISO 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 Informat
11、ion4.1 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
12、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.
13、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
14、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
15、ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16.2 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 allo
16、y 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 t
17、o 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 equip-ment.Aslab usually w
18、eighs about 55 lb (25 kg) but may weighanywhere from 40 to 60 lb (18 to 27 kg). Slabs are usuallyshipped in strapped bundles weighing about 2200 lb (onemetric ton). Other bundle weights may be as agreed uponbetween the producer and the customer.7.1.4 Other shapes and sizes as may be agreed uponbetwe
19、en the producer and the customer may be cast to thechemical requirements (Table 1) of this specification.8. Appearance8.1 See Specification B949.9. Sampling for Chemical Analysis9.1 See Specification B949.10. Methods of Chemical Analysis10.1 The determination of chemical composition shall bemade in
20、accordance with Test Methods E536, or ISO 3815-1,or ISO 3815-2 or other methods. In case of dispute, the resultssecured by Test Methods E536, or ISO 3815-1, or ISO 3815-2shall be the basis of acceptance.NOTE 1Test Methods E536 is directly applicable, in an unmodifiedform. ISO 3815-1 and ISO 3815-2 a
21、re generic methods applied to zinc andzinc alloys. Each of the methods may be modified and formatted for thealloy to be assayed. An experienced chemist, using suitable and/ortraceable standards along with valid quality assurance techniques, will beable to perform and validate the methods and demonst
22、rate acceptableprecision and accuracy.11. Rejection and Rehearing11.1 See Specification B949.12. Investigation of Claims12.1 See Specification B949.13. Settlement of Claims13.1 See Specification B949.14. Product Identification Marking and Packaging14.1 See Specification B949.15. Keywords15.1 CGG all
23、oy; Continuous Galvanizing Grade Zinc; zinc;zinc alloy; zinc metalTABLE 1 Chemical RequirementsGradeA(UNS)Composition,%Nominal RangeBAluminum Lead Aluminum LeadCZ80310 0.25 . 0.22 to 0.28 0.007 maxZ80411 0.35 . 0.31 to 0.39 0.007 maxZ80511 0.45 . 0.40 to 0.50 0.007 maxZ80531 0.45 0.02 0.40 to 0.50 0
24、.01 to 0.03Z80610 0.55 . 0.49 to 0.61 0.007 maxZ80710 0.65 . 0.58 to 0.72 0.007 maxZ80810 0.75 . 0.67 to 0.83 0.007 maxZ80910D1.00 . 0.90 to 1.10 0.007 maxZ80XXX 0.005 . 0.001 to 0.01 0.007 maxEImpurities, %: IronC0.0075 maxECadmium 0.01 maxCopper 0.01 maxOther Elements total of 0.01 maxZinc: balanc
25、e by differenceAUNS numbers in conformance with Practice E527.BFor purposes of determining conformance with this specification, an observedvalue obtained from analysis shall be rounded to the nearest unit in the lastright-hand place of figures used in expressing the limiting value, in accordancewith
26、 the rounding method of Practice E29.CLead and Iron levels of 0.01 % max and 0.01 % max respectively are allowed forCGG alloys produced from secondary zinc.DUNS Z80910 continuous galvanizing grade (CGG) alloy is primarily used tochange the galvanizing pot chemistry to transition from galvanneal to g
27、alvanizedproduction.ELead and Iron levels produced for secondary zinc are each 0.01 %.B852 162SUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last issue (B85214)that may impact the use of this standard. (Approved May 1, 2016.)(1) A new alloy
28、 was added to Table 1.(2) References to section numbers in Specification B949 wereeliminated.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determinati
29、on of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdr
30、awn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your
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