ASTM B860-2007 Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing《热浸镀锌用锌主合金的标准规范》.pdf
《ASTM B860-2007 Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing《热浸镀锌用锌主合金的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM B860-2007 Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing《热浸镀锌用锌主合金的标准规范》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B 860 07Standard Specification forZinc Master Alloys for Use in Hot Dip Galvanizing1This standard is issued under the fixed designation B 860; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers zinc master alloys which areused in hot dip galvanizing for the purpose of adjusting theconcentration of
3、certain alloying elements in the molten zincbath. Table 1 covers the chemical composition of thesematerials which include six master alloys of zinc-aluminum(brightener) and one master alloy of zinc-antimony.ASTM Common UNSType A-1 90/10 Zn/Al High Purity Z30750Type A-2 90/10 Zn/Al Low Purity Z31710T
4、ype A-3 95/5 Zn/Al High Purity Z30503Type A-4 95/5 Zn/Al Low Purity Z31510Type A-5 96/4 Zn/Al High Purity .Type A-6 96/4 Zn/Al Low Purity .Type S-1 90/10 Zn/Sb Z557101.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system
5、 may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is therespon
6、sibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateMaterial Safety Data Sheet (MSDS) for this product/materialas provided by the manufacturer, to establish appropriatesafety and health practices, and determine the applicability ofreg
7、ulatory limitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on dateof order acceptance form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B 897 Specification for the Configuration of Zinc and ZincAlloy Jumbo and Block I
8、ngotB 899 Terminology Relating to Non-ferrous Metals andAlloysE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE47 Test Methods for Chemical Analysis of Zinc Die-Casting Alloys3E88 Practice for Sampling Nonferrous Metals and Alloysin Cast Form for Det
9、ermination of Chemical CompositionE 527 Practice for Numbering Metals and Alloys (UNS)E 536 Test Methods for ChemicalAnalysis of Zinc and ZincAlloys3. Terminology3.1 Terms defined in Terminology B 899 shall apply unlessdefined otherwise in this standard.4. Ordering Information4.1 Orders for ingots u
10、nder this specification shall includethe following information:4.1.1 Quantity, lb,4.1.2 Alloy type (see Table 1),4.1.3 Size and type of ingot (jumbo, type 1 block, type 2block, slab or other ingot shape), if not manufacturers stan-dard,4.1.4 Specification number and year date,4.1.5 Source inspection
11、 (see Section 8), and4.1.6 Marking (see Section 10).5. Materials and Manufacture5.1 The material covered by this specification shall be ofuniform quality and shall be free from harmful contamination.The ingot surface shall contain a minimum of dross andadhering foreign matter.6. Chemical Requirement
12、s Chemical Requirements6.1 LimitsThe alloys shall conform to the requirements asto chemical composition prescribed in Table 1. Conformanceshall be determined by the producer by analyzing samplestaken at the time the ingots are made. If the producer hasdetermined the chemical composition of the metal
13、 during thecourse of manufacture, he shall not be required to sample andanalyze the finished product.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
14、June 1, 2007. Published July 2007. Originally approvedin 1995. Last previous edition approved in 2005 as B 860 - 05.2For 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
15、the standards Document Summary page onthe ASTM website.3Withdrawn.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.2 In case of dispute, the following requirements sh
16、allapply:6.2.1 Number of SamplesSamples for verification ofchemical composition shall be taken as follows:6.2.1.1 Not less than five ingots shall be taken at randomfrom each car or truckload of the same alloy for sampling.Each heat in the shipment shall be represented. If the shipmentis less than a
17、carload lot, one sample ingot shall be taken foreach 10 000 lb (4540 kg) or fraction thereof. When it is deemednecessary, a sample may be taken from each melt of 1000 lb(454 kg) or more.6.3 Methods of SamplingSamples from ingots for deter-mination of chemical composition shall be taken in accordance
18、with one of the following methods:6.3.1 Samples for chemical analysis shall be taken from thematerial by drilling, sawing, milling, turning, or clipping arepresentative piece or pieces to obtain weight of preparedsample not less than 100 g. Sampling shall be in accordancewith Practice E88.6.3.2 By a
19、greement, an optional method of sampling wouldbe to select, at random, ingots of the same heat, melt togetherrepresentative portions of each ingot selected, and cast a disc orsuitable sample from the liquid composite for spectrographic orchemical analysis.6.3.3 Samples for chemical analysis may also
20、 be in the formof a separately cast spectrographic disc specimen taken fromthe same pour used to cast the ingot.6.3.4 Alternate procedures for sampling and exchange ofsamples shall be agreed upon between the producer and thecustomer.6.4 Method of AnalysisThe determination of chemicalcomposition shal
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMB8602007STANDARDSPECIFICATIONFORZINCMASTERALLOYSFORUSEINHOTDIPGALVANIZING 镀锌 用锌主 合金 标准规范 PDF

链接地址:http://www.mydoc123.com/p-462539.html