1、Designation:B612B613 American Association of State Highway and Transportation Officials Standard AASHTO No: M120-77 Standard Specication for Zinc 1 This standard is issued under the xed designation B6; the number immediately following the designation indicates the year of original adoptionor,intheca
2、seofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript epsilon () indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope* 1.1 This specication covers
3、 zinc metal made from ore or other material by a process of distillation or by electrolysis in ve grades as follows: 1.1.1 LME Grade 1.1.2 Special High Grade 1.1.3 High Grade 1.1.4 Intermediate Grade 1.1.5 Prime Western Grade NOTE 1Certain continuous galvanizing grades are specied in Specication B85
4、2. Other continuous galvanizing and controlled lead grades are not included in this specication but are covered by specic user purchasing specications. 1.2 This specication does not cover zinc produced by sweating or remelting of secondary zinc. 1.3 The values stated in inch-pound units are to be re
5、garded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of
6、the user of this standard to become familiar with all hazards including those identied in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory l
7、imitations prior to use. 2. Referenced Documents 2.1 Thefollowingdocumentsoftheissueineffectonthedateofmaterialpurchaseformapartofthisspecicationtotheextent referenced herein. 2.2 ASTM Standards: 2 B852Specication for Continuous Galvanizing Grade (CGG) Zinc Alloys for Hot-Dip Galvanizing of Sheet St
8、eel B897Specication for Conguration of Zinc and Zinc Alloy Jumbo Block and Half Block Ingot B899Terminology Relating to Non-ferrous Metals and Alloys B914Practice for Color Codes on Zinc and Zinc Alloy Ingot for Use in Hot-Dip Galvanizing of Steel B949Specication for General Requirements for Zinc an
9、d Zinc Alloy Products E29Practice for Using Signicant Digits in Test Data to Determine Conformance with Specications E527Practice for Numbering Metals and Alloys in the Unied Numbering System (UNS) E536Test Methods for Chemical Analysis of Zinc and Zinc Alloys 2.3 ISO Standards: 3 ISO3815-1Zinc and
10、zinc alloys Part 1: Analysis of solid samples by optical emission spectrometry ISO3815-2Zinc and zinc alloys Part 2: Analysis by inductively coupled plasma optical emission spectrometry 1 This specication is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct
11、 responsibility of Subcommittee B02.04 on Zinc and Cadmium. Current edition approved May 1, 2012Feb. 1, 2013. Published May 2012March 2013. Originally approved in 1911. Last previous edition approved in 20092012 as B609.B612. DOI: 10.1520/B0006-12.10.1520/B0006-13. 2 ForreferencedASTMstandards,visit
12、theASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatserviceastm.org.ForAnnualBookofASTMStandards volume information, refer to the standards 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, h
13、ttp:/www.ansi.org. This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users
14、 consult prior editions as appropriate. In all cases only the current version of the standard as published by ASTM is to be considered the official document. *A Summary of Changes section appears at the end of this standard Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consh
15、ohocken, PA 19428-2959. United States 13. Terminology 3.1 Terms shall be dened in accordance with Terminology B899. 3.2 Denitions of Terms Specic to This Standard: 3.2.1 LME Grade, na grade of zinc containing a minimum of 99.995% zinc, with controlled impurity levels, as specied in Table 1. 3.2.2 Sp
16、ecial High Grade, na high purity grade of zinc containing a minimum of 99.990% zinc, with controlled impurity levels, as specied in Table 1. 3.2.3 High Grade, na grade of zinc containing a minimum of 99.95% zinc, with controlled impurity levels, as specied in Table 1. 3.2.4 IntermediateGrade,nagrade
17、ofzinccontainingaminimumof99.5%zinc,withcontrolledimpuritylevels,asspecied in Table 1. 3.2.5 Prime Western Grade, na grade of zinc containing 0.5 to 1.4% lead, a minimum of 98.5% zinc, with controlled impurity levels, as specied in Table 1. 3.3 Abbreviations: 3.3.1 LMELME Grade Zinc 3.3.2 SHGSpecial
18、 High Grade Zinc 3.3.3 HGHigh Grade Zinc 3.3.4 IGIntermediate Grade Zinc 3.3.5 PWGPrime Western Grade Zinc TABLE 1 Chemical Requirements NOTE1Thefollowingappliestoallspeciedlimitsinthistable:Forpurposesofdeterminingconformancewiththisspecication,anobservedvalue obtainedfromanalysisshallberoundedofft
19、othenearestunitinthelastright-handplaceofguresusedinexpressingthelimitingvalue,inaccordance with the rounding method of Practice E29. Grade UNS A Composition,% Color Code B Lead Iron max Cadmium max Alumi- num max Copper max Tin max Total Non-Zinc max Zinc, min by difference LME Grade (LME) Z12002 W
20、hite 0.003 max 0.002 0.003 0.001 0.001 0.001 0.005 99.995 Special High Grade C (SHG) Z13001 Yellow 0.003 max 0.003 0.003 0.002 0.002 0.001 0.010 99.990 High Grade (HG) Z14002 Green 0.03 max 0.02 0.01 0.01 0.002 0.001 0.05 99.95 Intermediate Grade (IG) Z16003 Blue 0.45 max 0.05 0.01 0.01 0.20 . 0.5 9
21、9.5 Prime Western Grade (PWG) Z18004 Black 0.51.4 0.05 0.20 0.01 0.10 . 1.5 98.5 TABLE 1 Chemical Requirements NOTE1Thefollowingappliestoallspeciedlimitsinthistable:Forpurposesofdeterminingconformancewiththisspecication,anobservedvalue obtainedfromanalysisshallberoundedofftothenearestunitinthelastri
22、ght-handplaceofguresusedinexpressingthelimitingvalue,inaccordance with the rounding method of Practice E29. Grade UNS A Composition,% Color Code B Lead Iron max Cadmium max Alumi- num max Copper max Tin max Total Non-Zinc max Zinc, min by difference LME Grade (LME) Z12002 White 0.003 max 0.002 0.003
23、 0.001 0.001 0.001 0.005 99.995 Special High Grade C (SHG) Z13001 Yellow 0.003 max 0.003 0.003 0.002 0.002 0.001 0.010 99.990 High Grade (HG) Z14003 Green 0.03 max 0.02 0.01 0.01 0.002 0.001 0.05 99.95 Intermediate Grade (IG) Z16005 Blue 0.45 max 0.05 0.01 0.01 0.20 . 0.5 99.5 Prime Western Grade (P
24、WG) Z18005 Black 0.51.4 0.05 0.20 0.01 0.10 . 1.5 98.5 A UNS designations were established in accordance with Practice E527. B Refer to Practice B914. C For London Metal Exchange (LME) purposes, Special High Grade zinc must be 99.995 % minimum zinc content by difference, corresponding to LME Grade i
25、nASTM Specication B6. B613 24. Ordering Information 4.1 Orders for zinc metal under this specication shall include information as specied in Specication B949, Section 4. 5. Materials and Manufacture 5.1 The manufacturer shall use care to have each lot of zinc metal be as uniform in quality as possib
26、le. 6. Chemical Requirements 6.1 The zinc metal shall conform to the requirements prescribed in Table 1. 6.2 Chemical requirement procedures shall be in compliance with the provisions of Specication B949, Section 5.2. 7. Sizes and Shapes 7.1 Slabs varying in weight from 40 to 60 lb (18 to 27 kg) are
27、 all considered standard slabs. 7.2 Zinc metal may be ordered in jumbos or blocks, as specied in Specication B897. 7.3 Zinc metal may also be ordered in anodes or other shapes. 8. Appearance 8.1 The zinc metal shall be reasonably free of surface corrosion and adhering foreign matter. 9. Sampling for
28、 Chemical Analysis 9.1 Sampling procedures shall be in compliance with the provisions of Specication B949, Section 6. 10. Methods of Chemical Analysis 10.1 In case of disagreement, results secured by an approved method or a method mutually agreed upon by both parties shall be the basis of acceptance
29、. Approved methods include Test Methods E536, ISO3815-1and ISO3815-2. NOTE2TestMethodsE536isdirectlyapplicable,inanunmodiedform,onlytoalloys3,5,and7.ISO3815-1andISO3815-2aregenericmethods applied to zinc and zinc alloys. Each of the methods may be modied and formatted for the alloy to be assayed.An
30、experienced chemist, using suitable and/or traceable standards along with valid quality assurance techniques, will be able to perform and validate the methods and demonstrate acceptable precision and accuracy. 11. Rejection and Rehearing 11.1 Claims to be considered in accordance with the provisions
31、 of Specication B949, Section 8. 12. Investigation of Claims 12.1 Claims shall be investigated in accordance with the provisions of Specication B949, Section 8. 13. Settlement of Claims 13.1 Claims shall be settled in accordance with the provisions of Specication B949, Section 8. 14. Product Identic
32、ation Marking and Packaging 14.1 Eachslab,block,jumbooringotshallbemarkedforidenticationinaccordancewiththeprovisionsofSpecicationB949, Section 10. 15. Keywords 15.1 high grade zinc; intermediate grade zinc; LME grade zinc; prime western zinc; special high grade zinc; zinc; zinc metal B613 3SUMMARY
33、OF CHANGES Committee B02 has identied the location of selected changes to this standard since the last issue (B6 - 12) that may impact the use of this standard. (Approved February 1, 2013.) (1)UNS numbers were added. SUMMARY OF CHANGES Committee B02 has identied the location of selected changes to t
34、his standard since the last issue (B6-09) that may impact the use of this standard. (Approved May 1, 2012.) (1)Note added to Section 10 about use of referenced analytical methods. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item m
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