ASTM B251 B251M-2017 Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube《锻造无缝铜及铜合金管通用要求的标准规格》.pdf
《ASTM B251 B251M-2017 Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube《锻造无缝铜及铜合金管通用要求的标准规格》.pdf》由会员分享,可在线阅读,更多相关《ASTM B251 B251M-2017 Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube《锻造无缝铜及铜合金管通用要求的标准规格》.pdf(15页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B251 10B251/B251M 17Standard Specification forGeneral Requirements for Wrought Seamless Copper andCopper-Alloy Tube1This standard is issued under the fixed designation B251;B251/B251M; the number immediately following the designation indicates theyear of original adoption or, in the cas
2、e of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This
3、 specification covers a group of general requirements common to several wrought product specifications. Unlessotherwise specified in the purchase order, or in an individual specification, these general requirements shall apply to copper andcopper-alloy tube supplied under Specifications B68B68/B68M,
4、 B75B75/B75M, B135B135/B135M, B466/B466M, B643 andB743.NOTE 1This specification B251 is the inch-pound companion to B251M; therefore, no SI equivalents are presented in the specification.1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The value
5、s stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.3 This international standard was developed in accordance with internationally recognized princ
6、iples on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 The following documents of the issue in effect on
7、date of material purchase form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B68B68/B68M Specification for Seamless Copper Tube, Bright AnnealedB75B75/B75M Specification for Seamless Copper TubeB135B135/B135M Specification for Seamless Brass Tube Metric B0135_B0135M
8、B153 Test Method for Expansion (Pin Test) of Copper and Copper-Alloy Pipe and TubingB154 Test Method for Mercurous Nitrate Test for Copper AlloysB170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB193 Test Method for Resistivity of Electrical Conductor MaterialsB428 Test Method for
9、 Angle of Twist in Rectangular and Square Copper and Copper Alloy TubeB466/B466M Specification for Seamless Copper-Nickel Pipe and TubeB643 Specification for Copper-Beryllium Alloy Seamless TubeB743 Specification for Seamless Copper Tube in CoilsB846 Terminology for Copper and Copper AlloysE3 Guide
10、for Preparation of Metallographic SpecimensE8E8/E8M Test Methods for Tension Testing of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE53 Test Method for Determination o
11、f Copper in Unalloyed Copper by Gravimetry1 This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipe andTube.Current edition approved Oct. 1, 2010Oct. 1, 2017. Published November 2010November 2017.
12、Originally approved in 1951. Last previous edition approved in 20022010as B251 02.B251 10. DOI: 10.1520/B0251-10.10.1520/B0251_B0251M-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume in
13、formation, refer to the standardsstandards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to a
14、dequately 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 considered the official document.*A Summary of Changes section appears at the end of this standardCopyright AS
15、TM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE255 Practice for Sampling Copper and Co
16、pper Alloys for the Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper Alloys3. Terminology3.1 Definitions:3.1.1 average diameter (for round tubes only)the average of the maximum and minimum outside diameters, or maximum andminimum inside diameters, whichever is a
17、pplicable, as determined at any one cross section of the tube.3.1.2 coila length of the product wound into a series of connected turns. The unqualified term “coil” as applied to tube usuallyrefers to a bunched coil.3.1.2.1 buncheda coil in which the turns are bunched and held together such that the
18、cross section of the bunched turns isapproximately circular.3.1.2.2 double layer flata coil in which the product is spirally wound into two connected disk-like layers such that one layeris on top of the other. (Sometimes called “double layer pancake coil” or “double layer spirally wound coil.”)3.1.2
19、.3 level or traverse wounda coil in which the turns are wound into layers parallel to the axis of the coil such thatsuccessive turns in a given layer are next to one another. (Sometimes called “helical coil.”)3.1.2.4 level or traverse wound on a reel or spoola coil in which the turns are positioned
20、into layers on a reel or spool parallelto the axis of the reel or spool such that successive turns in a given layer are next to one another.3.1.2.5 single layer flata coil in which the product is spirally wound into a single disk-like layer. (Sometimes called “pancakecoil” or “single layer spirally
21、wound coil.”)3.1.2.6 stagger wounda coil in which the turns are positioned into layers approximately parallel to the axis of the coil, butnot necessarily with the fixed regularity of a level or traverse wound coil.3.1.3 lengthsstraight pieces of the product.3.1.3.1 endsstraight pieces, shorter than
22、the nominal length, left over after cutting the product into mill lengths, stock lengths,or specific lengths. They are subject to minimum length and maximum weight requirements.3.1.3.2 millstraight lengths, including ends, that are conveniently manufactured in the mills. Full-length pieces are usual
23、ly 10,12, or 20 ft and subject to established length tolerances.3.1.3.3 multiplestraight lengths of integral multiples of a base length, with suitable allowance for cutting, if and whenspecified.3.1.3.4 randomrun of mill lengths without any indicated preferred length.3.1.3.5 specificstraight lengths
24、 that are uniform in length, as specified, and subject to established length tolerances.3.1.3.6 specific with endsspecific lengths, including ends.3.1.3.7 standarduniform lengths recommended in a Simplified Practice Recommendation or established as a CommercialStandard.3.1.3.8 stockstraight lengths
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