1、Designation: B852 12B852 14Standard 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
2、 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, commonly known as Continuous Galvanizing G
3、rade (CGG) alloys thatcontain aluminum, or aluminum and lead and lead, that are used in continuous hot-dip galvanizing of steel sheet. The compositionsfor CGG grades made from primary zinc are shown in Table 1. Exceptions for grades made from secondary zinc are found infootnote C.1.2 CGG alloys spec
4、ified in Specification B852 are used in continuous hot-dip galvanizing of steel sheet to produce product,as specified in Specification A653/A653M.1.3 Other alloy compositions not included in B852, and as may be agreed upon between the producer and the user, may be usedfor continuous galvanizing.1.4
5、The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.5 This standard does not purport to address all of the safety concerns, if any, assoc
6、iated with its use. It is the responsibilityof the user of this standard to become familiar with all hazards including those identified in the appropriate Material Safety DataSheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices,
7、 anddetermine the applicability of regulatory limitations 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 theHot-Dip ProcessB897 Specification for Configuration of Zinc and Zinc All
8、oy Jumbo, Block, Half Block, and Slab IngotB899 Terminology Relating to Non-ferrous Metals and AlloysB949 Specification for General Requirements for Zinc and Zinc Alloy ProductsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE88 Practice for Samplin
9、g Nonferrous Metals and Alloys in Cast Form for Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)E536 Test Methods for Chemical Analysis of Zinc and Zinc AlloysE634 Practice for Sampling of Zinc and Zinc Alloys by Spark Atomic Em
10、ission Spectrometry2.2 ISO Standards:3ISO 3815-1 Zinc and zinc alloys Part 1: Analysis of solid samples by optical emission spectrometryISO 3815-2 Zinc and zinc alloys Part 2: Analysis by inductively coupled plasma optical emission spectrometry3. Terminology3.1 Terms shall be defined in accordance w
11、ith Terminology B899.1 This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.04 on Zincand Cadmium.Current edition approved May 1, 2012Oct. 1, 2014. Published August 2012October 2014. Originally approve
12、d in 1994. Last previous edition approved in 20082012 asB852 - 08.B852 12. DOI: 10.1520/B0852-12.10.1520/B0852-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the
13、 standardsstandards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indicat
14、ion of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be cons
15、idered the official document.*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 States14. Ordering Information4.1 Orders for zinc alloy ingot under this specification shall includ
16、e information as specified in Specification B949, Section 4.5. Materials and Manufacture5.1 The producer shall use care that each shipment of CGG alloy be as uniform in quality as possible.6. Chemical Requirements6.1 CGG alloy shall conform to the requirements of Table 1 as determined by chemical an
17、alysis by the producer on samplestaken at his plant (see Section 9).6.2 Chemical requirement procedures shall be in compliance with the provisions of Specification B949, Section 5.2.7. Size and Shape7.1 CGG alloy may be ordered as either jumbos, blocks, or slabs.7.1.1 CGG alloy metal may be ordered
18、in jumbos or blocks, as specified in Specification B897.7.1.2 Jumboslarge castings of zinc or zinc alloy designed for handling by mechanical equipment. A jumbo usually weighsabout 2400 lb (1087 kg). Jumbo shapes may vary, depending on the producers practice, and may be referred to as strip jumbosor
19、as block jumbos. The nominal weight, dimensions, and location of holes or openings shall be as agreed upon between theproducer and the customer.7.1.3 Slabssmaller castings of zinc or zinc alloy designed for manual handling, but often handled by mechanical equipment.A slab usually weighs about 55 lb
20、(25 kg) but may weigh anywhere from 40 to 60 lb (18 to 27 kg). Slabs are usually shipped instrapped bundles weighing about 2200 lb (one metric ton). Other bundle weights may be as agreed upon between the producer andthe customer.7.1.4 Other shapes and sizes as may be agreed upon between the producer
21、 and the customer may be cast to the chemicalrequirements (Table 1) of this specification.8. Appearance8.1 CGG alloy castings (jumbos and slabs) shall be free of undue surface oxide, adhering foreign matter, and any “flash” thatwould interfere with handling and use.9. Sampling for Chemical Analysis9
22、.1 Sampling procedures shall be in compliance with the provisions of Specification B949, Section 6.TABLE 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 m
23、axZ80531 0.45 0.02 0.40 to 0.50 0.01 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 maxZ80910D 1.00 . 0.90 to 1.10 0.007 maxImpurities, %: IronC 0.0075 maxCadmium 0.01 maxCopper 0.01 maxOther Elements total of 0.01 maxZinc: balance by
24、differenceA UNS numbers in conformance with Practice E527.B For 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 th
25、e rounding method of Practice E29.C Lead and Iron levels of 0.01 % max and 0.01 % max respectively are allowed forCGG alloys produced from secondary zinc.D UNS Z80910 continuous galvanizing grade (CGG) alloy is primarily used tochange the galvanizing pot chemistry to transition from galvanneal to ga
26、lvanizedproduction.B852 14210. Methods of Chemical Analysis10.1 The determination of chemical composition shall be made in accordance with Test Methods E536, or ISO 3815-1, or ISO3815-2 or other methods. In case of dispute, the results secured by Test Methods E536, or ISO 3815-1, or ISO 3815-2 shall
27、 bethe basis of acceptance.NOTE 1Test Methods E536 is directly applicable, in an unmodified form, only to alloys 3, 5, and 7. form. ISO 3815-1 and ISO 3815-2 are genericmethods applied to zinc and zinc alloys. Each of the methods may be modified and formatted for the alloy to be assayed. An experien
28、ced chemist, usingsuitable and/or traceable standards along with valid quality assurance techniques, will be able to perform and validate the methods and demonstrateacceptable precision and accuracy.11. Rejection and Rehearing11.1 Claims to be considered in accordance with the provisions of Specific
29、ation B949, Section 8.12. Investigation of Claims12.1 Claims shall be investigated in accordance with the provisions of Specification B949, Section 8.13. Settlement of Claims13.1 Claims shall be settled in accordance with the provisions of Specification B949, Section 8.14. Product Identification Mar
30、king and Packaging14.1 Each slab, block, jumbo or ingot shall be marked for identification in accordance with the provisions of Specification B949,Section 10.15. Certification15.1 A certificate shall be provided by the producer with the following information:15.1.1 The weight of shipment,15.1.2 The
31、chemical composition of each production lot or partial lot within the shipment.15.1.3 A statement that the material was produced, sampled and analyzed in accordance with this specification, and15.1.4 A statement that the requirements of this specification have been met.16. Keywords16.1 CGG alloy; Co
32、ntinuous Galvanizing Grade Zinc; zinc; zinc alloy; zinc metalSUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last issue(B852 - 08B852)12) that may impact the use of this standard. (Approved May 1, 2012.)October 1, 2014.)(1) Revisions have be
33、en made to Sections 2, 4, 9, 10, 11, 12, 13, and 14 to reference Specification B949 and delete certain portionsof these sections formerly a part of this standard.Astatement was added to the scope stating that CGG alloys in Specification B852are used in continuous hot-dip galvanizing of steel sheet t
34、o produce product, a specified in Specification A653/B653M.(2) The titles of Sections 6, 12, 13, 14, 15, and 16 have been revised to be in agreement with a standard format for SubcommitteeB02.04 standards.A footnote was added to Table 1 clarifying the use of CGG UNS Z80910.ASTM International takes n
35、o 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 determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own respon
36、sibility.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 withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed t
37、o 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 comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the add
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