1、Designation: B 29 03Standard Specification forRefined Lead1This standard is issued under the fixed designation B 29; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision. A number in parentheses indicates the y
2、ear of last reapproval. A superscriptepsilon (e) 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. Scope1.1 This specification covers refined lead in pig, block, orhog form.1.2 The values stated in
3、inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.3 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 hazard
4、s including those identified in the appropriateMaterial Safety Data Sheet for this product/material as pro-vided by the manufacturer, to establish appropriate safety andhealth practices, and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 The following do
5、cuments of the issue in effect on thedate of material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2E 37 Test Methods for Chemical Analysis of Pig Lead3E
6、 88 Practice for Sampling Nonferrous Metals and Alloysin Cast Form for Determination of Chemical Composition33. Ordering Information3.1 Orders for refined lead under this specification shallinclude the following information:3.1.1 ASTM designation and year of issue,3.1.2 Quantity (weight),3.1.3 Name
7、of material (for example, pure lead),3.1.4 Size and shape (see Section 6),3.1.5 Grade (see Table 1 and accompanying notes), and3.1.6 Certification or test report if specified (Section 13).4. Materials and Manufacture4.1 Lead shall be supplied in commercial standard forms orshapes requested by the pu
8、rchaser in the following grades:4.1.1 Low bismuth low silver pure lead,4.1.2 Refined pure lead,4.1.3 Pure lead, and4.1.4 Chemical copper lead.4.2 The grades of lead listed in 4.1.1-4.1.4 shall be producedby any smelting and refining process from ore or recycledmaterials to meet the chemical requirem
9、ents of this specifica-tion.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.02 on Refined Lead, Tin, Antimony, and Their Alloys.Current edition approved June 10, 2003. Published July 2003. Original
10、lyapproved in 1919. Last previous edition approved in 1997 as B 29 - 92 (1997).2Annual Book of ASTM Standards, Vol 14.02.3Annual Book of ASTM Standards, Vol 03.05.TABLE 1 Chemical RequirementsA,BGradeComposition (Weight Percent)Low BismuthLow SilverPure Lead,maxCRefined PureLead, maxDPure Lead,maxCh
11、emical-Copper LeadESb 0.0005 0.0005 0.001 0.001 maxAs 0.0005 0.0005 0.001 0.001 maxSn 0.0005 0.0005 0.001 0.001 maxSb As and Sn . . 0.002 0.002 maxCu 0.0010 0.0010 0.0015 0.0400.080Ag 0.0010 0.0075 0.010 0.020 maxBi 0.0015 0.025 0.05 0.025 maxZn 0.0005 0.001 0.001 0.001 maxTe 0.0001 0.0001 . .Ni 0.0
12、002 0.0002 0.0005 0.002 maxFe 0.0002 0.001 0.001 0.002 maxLead (min) bydifference99.995 99.97 99.94 99.90UNS Number L50006 L50021 L50049 L51121AThe following applies to all specified limits in Table 1: For the purpose ofdetermining conformance with this specification, an observed value obtained from
13、the analysis shall be rounded off “to the nearest unit” in the last right hand placeof figures used in expressing the limiting value, in accordance with the roundingmethod of Practice E 29.BBy agreement between the purchaser and the supplier, analyses may berequired and limits established for elemen
14、ts or compounds not specified in Table1.CThis grade is intended for chemical applications where low silver and lowbismuth contents are required.DThis grade is intended for lead acid battery applications.EThis grade is intended for applications requiring corrosion protection andformability.1Copyright
15、 ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Composition5.1 The lead shall conform to the requirements prescribed inTable 1 and accompanying notes.6. Sizes and Shapes6.1 Pigs shall weigh up to a nominal 110 lb (50 kg).6.2 Blocks or hogs
16、shall be square or oblong and weigh upto 2530 lb (1150 kg).7. Appearance7.1 The lead shall be reasonably free from surface corrosionand adhering foreign material.8. Lot8.1 All lead of the same type produced and cast at one timeshall constitute a lot for chemical analysis. Each pig or block ofthe lot
17、 shall bear a single identifying number that can be relatedto the manufacturing lot.9. Sampling for Chemical Analysis9.1 The sample for chemical analysis shall be selected byone of the following methods:9.1.1 Test samples taken from the lot during casting, or9.1.2 Test samples taken from the final s
18、olidified castproduct.9.2 Sampling for Lot AnalysisThe supplier may obtainsamples from the lot of molten metal during casting. All or partof these samples may be cast into shapes suitable for use inspectrographic analytical methods.9.3 Sampling of Cast Product:9.3.1 If the lead is in the form of sta
19、ndard pigs (Fig. 1), thesample for chemical analysis shall be taken in accordance with9.3.3.1, 9.3.3.2, or 9.3.3.3.9.3.1.1 If the pigs differ in shape from those shown in Fig.1 or the product is cast into blocks or hogs, the supplier and thepurchaser shall agree mutually as to the method to be follo
20、wedin sampling such shapes.9.3.2 Sampling Pig LeadA portion representative of thetotal shipment shall be selected at random for the final sample.For lots containing at least 100 000 lb (45 400 kg) of pig lead,one pig shall be taken from every 20 000 lb (9080 kg). Forsmaller lots, a total of five pig
21、s shall be taken.9.3.3 Sample PreparationEach pig shall be cleaned thor-oughly to rid the surface of dirt or adhering foreign materialprior to sampling by one of the following methods: sawing,drilling, or melting.9.3.3.1 SawingThe pigs selected shall be sawed com-pletely through as illustrated in Fi
22、g. 1. The sawings from thepigs shall be mixed thoroughly and quartered, and the samplesfor analysis taken from the mixed material. The sawings mustbe free of extraneous material introduced from the saw blade.All sawings shall be treated with a strong magnet in order toremove iron introduced by sawin
23、g.9.3.3.2 DrillingThe pigs shall be drilled at least halfwaythrough from two opposite sides as illustrated in Fig. 2. A drillof about12 in. (12.7 mm) in diameter shall be used. In drilling,the holes shall be spaced along a diagonal line from one cornerof the pig to the other. Holes may be made in a
24、single pig or ineach of several pigs placed as illustrated in Fig. 2. The drillingsshall be clipped into pieces not over12 in. (12.7 mm) in length,mixed thoroughly, and treated with a strong magnet to removeiron introduced by drilling.9.3.3.3 MeltingWhole pigs, portions of pigs produced bysawing, dr
25、illings, or sawings shall be melted in a clean vessel.FIG. 1 Method of Sampling Lead by SawingNOTE 1Pigs selected for sampling shall be placed side by side, everyother pig bottom side up, and sampled according to template in sets of fivepigs each as indicated above. The pigs shall be drilled at leas
26、t halfwaythrough: when a larger sample is desired, the pigs shall be turned over andsampled on the other diagonal.FIG. 2 Method of Sampling Lead by DrillingB29032The melting temperature must not exceed 685F (363C) toprevent excessive drossing. The lead must be stirred immedi-ately prior to sampling.
27、 The molten lead shall be cast intoshapes suitable for use in spectrographic analysis, cast into thinsample bars not to exceed38 in. (9.5 mm) thick for sawing, orgranulated by pouring into distilled water and drying thematerial thoroughly. For sample bars, saw cuts shall be madehalfway across the ba
28、r from each side and staggered so thatthey are about12 in. (12.7 mm) apart. The sawings so producedare treated in accordance with 9.3.3.1.9.3.4 Sample Size:9.3.4.1 For spectrographic analysis, three samples shall beprepared of a size and shape satisfactory for use by thelaboratory at which the analy
29、sis is to be made.9.3.4.2 For wet chemical analysis, each prepared sample(sawings, drillings, or granules) shall weigh at least 600 g.49.3.5 Aspects of sampling and sample preparation notspecifically covered in this specification shall be carried out inaccordance with Practice E 88.10. Methods of Ch
30、emical Analyses10.1 The chemical compositions enumerated in Table 1 ofthis specification shall, in case of disagreement, be determinedby wet chemical or spectrographic methods mutually agreedupon by the supplier and the purchaser.10.2 By agreement between the purchaser and the supplier,analyses may
31、be required and limits established for elements orcompounds not specified in Table 1.11. Inspection11.1 Inspection of the material shall be agreed upon be-tween the purchaser and the supplier as part of the purchasecontract.12. Rejection and Rehearing12.1 Material that fails to conform to the requir
32、ements ofthis specification may be rejected. Rejection should be reportedto the supplier promptly and in writing. In case of dissatisfac-tion with the results of the test, the supplier may make claimfor a rehearing.12.2 Rejection shall be considered as follows:12.2.1 Variation of weight, quantity, d
33、imensions, or work-manship.12.2.2 Chemical composition.12.2.2.1 In case of dispute, the material shall be sampled inthe presence of both parties in accordance with 9.3.12.2.2.2 The resulting sample (at least 1800 g) shall bemixed and separated into three equal parts, each of which shallbe placed in
34、a sealed package, one for the supplier, one for thepurchaser, and one for the umpire if necessary, and analyzed inaccordance with Test Methods E 37.12.3 When the lead metal satisfies the chemical and physi-cal requirements of this specification, it shall not be con-demned for defects in manufacturin
35、g or for defects of alloys orproducts in which it is used.13. Certification13.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification that samples repre-senting each lot have been tested as directed in this specifica-tion and the requirements have been met.
36、When specified in thepurchase order or contract, a certified report of the test resultsshall be furnished.14. Marking and Special Requirements14.1 A brand, by which the supplier can be identified, shallbe cast or marked legibly upon each pig, block, or hog. Inaddition, other markings shall identify
37、the material by type andlot number.14.2 (Any) special marking, color code, and other qualityrequirements not covered by this specification shall be agreedupon between the supplier and the purchaser.15. Keywords15.1 chemical-copper lead; lead; lead metal; pure lead;refined pure leadASTM International
38、 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 determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their ow
39、n 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 withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be ad
40、dressed 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 comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, a
41、t the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).4“Determination of As, Sb, and Te in Lead and Lead Alloys Using HydrideGeneration Atomic Absorption Spectrometry,” G.J. Fox, Atomic Spectroscopy,Vol11, No.1, January 1990, p. 13.B29033
