ASTM B275-2005 Standard Practice for Codification of Certain Nonferrous Metals and Alloys Cast and Wrought《铸造和锻造某些有色金属和合金的标准实施规程汇编》.pdf
《ASTM B275-2005 Standard Practice for Codification of Certain Nonferrous Metals and Alloys Cast and Wrought《铸造和锻造某些有色金属和合金的标准实施规程汇编》.pdf》由会员分享,可在线阅读,更多相关《ASTM B275-2005 Standard Practice for Codification of Certain Nonferrous Metals and Alloys Cast and Wrought《铸造和锻造某些有色金属和合金的标准实施规程汇编》.pdf(7页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B 275 05Standard Practice forCodification of Certain Nonferrous Metals and Alloys, Castand Wrought1This standard is issued under the fixed designation B 275; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (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. Scope*1.1 This practice covers a system origi
3、nally adopted fordesignating light metals and alloys, cast and wrought, and laterextended to certain heavier, base-metal die-casting alloys.Those designations, which are currently being used in specifi-cations under the jurisdiction of Committees B02 on Nonfer-rous Metals and Alloys and B07 on Light
4、 Metals and Alloys,are listed in Table X2.1.1.1.1 The alloy designations now being used in CommitteeB07 specifications for aluminum and aluminum-alloy wroughtand cast products conform to ANSI H35.1. Alloys formerlycodified by this practice and the corresponding ANSI designa-tions are shown in Tables
5、 X3.1 and X3.2.1.2 This practice also provides a system for designatingmagnesium alloys that have been used commercially since1952, and thus is intended to be the registration source for newmagnesium alloys. A record of designations along with theestablished compositions is given in Table X4.1.1.3 T
6、he equivalent Unified Numbering System (UNS) alloydesignations shown in the appendixes are in accordance withPractice E 527.2. Referenced Documents2.1 The following documents form a part of this practice tothe extent referenced herein:2.2 ASTM Standards:2B37 Specification for Aluminum for Use in Iro
7、n and SteelManufactureB80 Specification for Magnesium-Alloy Sand CastingsB86 Specification for Zinc and Zinc-Aluminum (ZA)AlloyFoundry and Die CastingsB 93/B93M Specification for Magnesium Alloys in IngotForm for Sand Castings, Permanent Mold Castings, andDie CastingsB94 Specification for Magnesium-
8、Alloy Die CastingsB 102 Specification for Lead- and Tin-Alloy Die CastingsB 240 Specification for Zinc and Zinc-Aliminum (ZA) Al-loys in Ingot Form for Foundry and Die CastingsB 327 Specification for Master Alloys Used in Making ZincDie Casting AlloysE 527 Practice for Numbering Metals and Alloys (U
9、NS)2.3 ANSI Standard:3H35.1 Alloy and Temper Designation Systems for Alumi-num3. Basis of Codification3.1 The designations for alloys and unalloyed metals arebased on their chemical composition limits.NOTE 1For aluminum and magnesium alloys, cast and wrought,standard limits for alloying elements and
10、 impurities are expressed to thefollowing places:Less than 0.0001 % (used only for magnesium alloys) 0.0000X0.0001 to 0.001 % 0.000X0.001 to 0.01 % 0.00X0.01 to 0.10 %Unalloyed aluminum made by a refining process 0.0XXAlloys and unalloyed aluminum or magnesium not made bya refining process0.0X0.10 t
11、hrough 0.55 % 0.XXOver 0.55 % 0.X,X.X,XX.X3.2 Designations shall be assigned, revised, and cancelledby Subcommittee B07.07 of ASTM Committee B07 on LightMetals and Alloys on written requests to its chairman. Com-plete chemical composition limits shall be submitted withrequest for assignment or revis
12、ion of designations. Arbitraryassignments by other subcommittees or committees will not berecognized.3.3 The temper designation, which is used for all metalforms, except ingot, follows the alloy designation and isseparated with a dash.1This practice is under the jurisdiction of ASTM Committee B07 on
13、 LightMetals and Alloys and is the direct responsibility of Subcommittee B07.03 onAluminum Alloy Wrought Products.Current edition approved July 1, 2005. Published July 2005. Originally approvedin 1962. Last previous edition approved in 2004 as B 275 04.2For referenced ASTM standards, visit the ASTM
14、website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available in the Related Materials section (gray pages) of the Annual Book ofASTM Standards, Vol 02.02.1*A
15、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.4. Alloys4.1 Designation for alloys shall consist of not more than twoletters representing the alloying elements (Note 2) s
16、pecified inthe greatest amount, arranged in order of decreasing percent-ages, or in alphabetical order if of equal percentages, followedby the respective percentages rounded off to whole numbersand a serial letter (Notes 3 and 4). The full name of the basemetal precedes the designation, but it is om
17、itted for brevitywhen the base metal being referred to is obvious.NOTE 2For codification, an alloying element is defined as an element(other than the base metal) having a minimum content greater than zeroeither directly specified or computed in accordance with the percentagesspecified.NOTE 3The seri
18、al letter is arbitrarily assigned in alphabetical se-quence starting with “A” (omitting “I” and “O”) and serves to differentiateotherwise identical designations. A serial letter is necessary to completeeach designation.NOTE 4The designation of a casting alloy in ingot form is derivedfrom the composi
19、tion specified for the corresponding alloy in the form ofcastings. Thus, a casting ingot designation may consist of an alloydesignation having one or more serial letters, one for each productcomposition, or it may consist of one or more alloy designations.4.2 The letters used to represent alloying e
20、lements shall bethose in Table 1.4.3 In rounding percentages, the nearest whole number shallbe used. If two choices are possible as when the decimal isfollowed by a 5 only, or a 5 followed only by zeros, the nearesteven whole number shall be used.4.4 When a range is specified for the alloying elemen
21、t, therounded mean shall be used in the designation.4.5 When only a minimum percentage is specified for thealloying element, the rounded minimum percentage shall beused in the designation.5. Unalloyed Metals5.1 Designations for unalloyed metals consist of the speci-fied minimum purity, all digits re
22、tained but dropping thedecimal point, followed by a serial letter (Note 3). The fullname of the base metal precedes the designation, but it isomitted for brevity when the base metal being referred to isobvious.6. Keywords6.1 aluminum; lead; magnesium; tin; UNS designations;zincAPPENDIXES(Nonmandator
23、y Information)X1. EXAMPLES OF CODIFICATIONX1.1 Example 1For Alloy CG181A in SpecificationB 327, “C” represents copper, the alloying element specified inthe greatest amount; “G” represents magnesium, the alloyingelement specified in the second greatest amount; 18 indicatesthat the rounded mean copper
24、 percentage lies between 17 and19; 1 signifies the nearest whole number for magnesiumpercentage; and “A” as the final letter indicates that this is thefirst alloy qualified and assigned under the designation CG181.X1.2 Example 2For Alloys AZ91A, B, and C, in Speci-fication B 93/B 93M, “A” represents
- 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:
- ASTMB2752005STANDARDPRACTICEFORCODIFICATIONOFCERTAINNONFERROUSMETALSANDALLOYSCASTANDWROUGHT 铸造 锻造 某些

链接地址:http://www.mydoc123.com/p-460829.html