1、AN AMERICAN NATIONAL STANDARDPreferred Metric Sizes for Flat, Round, Square, Rectangular,and Hexagonal Metal ProductsASME B32.100-2005(Consolidation of ASME B32.3M and B32.4M)ASME B32.100-2005(Consolidation of ASME B32.3M and B32.4M)Preferred MetricSizes for Flat,Round, Square,Rectangular,and Hexago
2、nalMetal Products Three Park Avenue New York, NY 10016AN AMERICAN NATIONAL STANDARDDate of Issuance: September 12, 2005This Standard will be revised when the Society approves the issuance of a new edition. There will beno addenda issued to this edition.ASME issues written replies to inquiries concer
3、ning interpretations of technical aspects of this Stan-dard. Interpretations are published on the ASME Web site under the Committee Pages athttp:/www.asme.org/codes/ as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was develope
4、d under procedures accredited as meeting the criteria for American National Stan-dards. The Standards Committee that approved the code or standard was balanced to assure that individuals from com-petent and concerned interests have had an opportunity to participate. The proposed code or standard was
5、 made avail-able for public review and comment that provides an opportunity for additional public input from industry, academia,regulatory agencies, and the public-at-large.ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.ASME does not take any po
6、sition with respect to the validity of any patent rights asserted in connection with any itemsmentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringe-ment of any applicable letters patent, nor assumes any such liability. Users of a code
7、 or standard are expressly advisedthat determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely theirown responsibility.Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as gov-ern
8、ment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies, which precludes the issuance of interpretations by individuals.No part of this document may be repr
9、oduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2005 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S
10、.A.CONTENTSForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ivAcknowledgement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ivCommittee Roster . .
11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vCorrespondence With the B32 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Use of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、. . . . . . . . . . . . . . 14 Basis of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Tables
14、1 Preferred Thicknesses, D (mm), for All Flat Metal Products . . . . . . . . . . . . . . . . . . . . . 22Preferred Widths (mm) for Flat Metal Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Preferred Lengths (mm) for Flat Metal Products . . . . . . . . . . . . . . . . . . . .
15、 . . . . . . . . . . 24 Preferred Diameters, D (mm), of Round Metal Products . . . . . . . . . . . . . . . . . . . . . . . . 35 Preferred Across Flat Sizes, D (mm), of Square Metal Products . . . . . . . . . . . . . . . . . . 46 Preferred Across Flat Sizes, D (mm), of Hexagonal Metal Products . . .
16、. . . . . . . . . . . . 47 Preferred Lengths (mm) of Round, Square, Rectangular, and Hexagonal Metal Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Preferred Across Flat Sizes (mm) of Rectangular Metal Products . . . . . . . . .
17、 . . . . . . . . 59 Thickness Tolerances (mm) for Hot-Rolled Steel Sheet of Structural Qualities (ISO 4995, ISO 5002) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610 Thickness Tolerances (mm) for Cold-Rolled Steel Sheet of Structural Qualities
18、(ISO 4997) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 611 Tolerance (mm) for Hot-Rolled, Round, Square, and Hex Steel Bars (ISO 1035-4) . . . . 612 Tolerances (mm) for Hot-Rolled Flat Bars (ISO 1035-4) . . . . . . . . . . . . .
19、 . . . . . . . . . . . . 613 Tolerance (mm) for Cold-Finished, Round, Square, and Hex Steel Bars (ANSI B4.2) . . 7Nonmandatory AppendixA Related Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9iiiFOREWORDThe U.S. Department of Co
20、mmerce, in its July 1971 report to Congress titled “A Metric America A Decision Whose Time Has Come,” recommended that the United States should change to themetric system of measurement through a coordinated national program. This action, along withsubsequent increased metric activity in industry, r
21、esulted in a number of requests from produc-ers and users that the B32 Committee develop preferred series of metric sizes for the variousforms of wrought metal mill products.The B32.100 standard is based on the previously published standards B32.3M-1984 and B32.4M-1980. Development of these Standard
22、s was started in 1973. The proposal received Standards Com-mittee B32 approval on June 4, 1974. It was subsequently approved by the sponsor and submit-ted to the American National Standards Institute for designation as an American NationalStandard. This was granted on July 9, 1974. The last edition
23、was approved by the American Na-tional Standards Institute on September 24, 1984 and reaffirmed in 1994.The sizes in this Standard are derived from a list of preferred metric sizes in which each num-ber is approximately 60% greater than the number preceding it (ANSI B4.2 or ISO 497 Series R5H11032).
24、Second Choice sizes are in increments of 25% (Series R10H11032) and Third Choice sizes in incrementsof 12% (Series R20H11032). Some deviations from this principle occur as the result of minor rounding.The selected sizes also reflect standard material sizes in ISO and national standards in traditiona
25、lmetric countries.In 2002, the B32 Committee established a Task Force to draft new metric standards for the fol-lowing product groups:(a) ASME B32.100-200X Preferred Metric Sizes for Flat, Round, Square, Rectangular, and Hexag-onal Metal Products;(b) ASME B32.200-200X Preferred Metric Sizes for Roun
26、d, Square, and Rectangular TubularMetal Products Other Than Pipe; and(c) ASME B32.300-200X Preferred Metric Sizes for Equal and Unequal Leg Angles, T- and Channel-Sections, IPN- and Wide Flange-Beams Structural Steel.Material tolerances must be included in order to fully define the size of a product
27、. Internationalor leading national metric standards data were used as the basis for the tolerance data includedin this Standard. References to the sources of these tolerances have been made, and a list of re-lated standards are shown in Nonmandatory Appendix A. Figures are shown throughout theStanda
28、rd to help speed up the search for the material type needed.The present edition was approved by the American National Standards Institute on February11, 2005.ACKNOWLEDGEMENTFigures in this Standard are copied from the book, Metric Standards, for Worldwide Manufac-turing, with the permission of the p
29、ublishers, ASME Press and KOK metricUSA.org, Inc. Datashown in this Standard were developed with the help of the global standards material publishedin the same publication.ivvASME B32 COMMITTEEMetal and Metal AlloyWrought Mill Product Nominal Sizes(The following is the roster of the Committee at the
30、 time of approval of this Standard.)OFFICERSJ. A. Gruber, ChairJ. H. Karian, SecretaryCOMMITTEE PERSONNELF. M. Christensen, F. M. Christensen Metallurgical Consulting, Inc.A. Cohen, Arthur Cohen however, theyshould not contain proprietary names or information.Requests that are not in this format wil
31、l be rewritten by the Committee prior to being answered,which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any interpretation when or if additional in-formation that might affect an interpretation is available. Further, persons aggrieved
32、by an in-terpretation may appeal to the cognizant ASME Committee. ASME does not “approve,” “certify,”“rate,” or “endorse” any item, construction, proprietary device, or activity.Attending Committee Meetings. The B32 Standards Committee holds meetings or telephone con-ferences, which are open to the
33、public. Persons wishing to attend any meeting or telephone con-ference should contact the Secretary of the B32 Standards Committee or check our Web site athttp:/www.asme.org/codes/.PREFERRED METRIC SIZES FOR FLAT, ROUND, SQUARE, RECTANGULAR, AND HEXAGONAL METAL PRODUCTS1 SCOPEThis Standard establish
34、es a preferred series of metricthicknesses, widths, and lengths for flat metal productsof rectangular cross-section. The thicknesses and widthsshown in this Standard are also applicable to base met-als that may be coated in later operations. This Standardalso establishes a preferred series of metric
35、 sizes forround, square, rectangular, and hexagonal metal prod-ucts.2 GENERALThe sizes in this Standard provide an orderly seriesof thicknesses for all flat metal products and widths forrectangular cross-section metal products. The series wasdeveloped to provide a reasonable selection of metalthickn
36、esses from 0.050 mm to 300 mm and of metalwidths from 10 mm to 5000 mm. In each case, the seriesprovides for some second, third, and sometimes fourthchoice sizes (thicknesses and widths) to cover instanceswhere selection from the primary preferred sizes maybe inadequate. Sufficient coverage in logic
37、al steps is pre-sented in the tables to adequately serve most of the gen-eral purpose requirements of industry for flat metalproducts. The Standard also provides an orderly seriesof lengths for flat metal products.This Standard also provides a series of sizes for eachof round, square, rectangular, a
38、nd hexagonal forms ofmetal products used for general applications. The serieswas developed to provide a reasonable selection ofmetal diameters from 0.020 mm to 320 mm for roundsand distance across flats from 3 mm to 300 mm forsquares, various cross-section sizes from 1.6 mm by 2 mmto 100 mm by 200 m
39、m for rectangles, and from 1.5 mmto 150 mm for hexagons. The series provides for somesecond, third, and fourth choice diameters for rounds andsecond and third choice distance-across-flats for squaresand hexagons where selection from the primary preferredsizes may be inadequate. The series also provi
40、des for pre-ferred lengths of rounds, squares, rectangles, and hexa-gons. Sufficient coverage in logical steps is presented inthe tables to adequately serve most of the general pur-pose requirements of industry for round, square, rectan-gular, and hexagonal metal products.It is recognized that for s
41、ome applications, particu-larly large volume requirements in some metals for spe-ASME B32.100-20051cific end uses, precise engineering requirements dictatea need for sizes other than those presented in this Stan-dard. This Standard is in no way meant to preclude theuse of such sizes where they are r
42、equired. However, forgeneral purpose applications or where requirementspermit some latitude in the selection of thickness orthickness/width/length combinations, the simplifiedpreferred sizes given in this Standard should facilitateinterchangeability of metals in design, reduce invento-ries, and incr
43、ease the availability of warehouse stocksof those sizes commonly used for general purpose ap-plications. In such instances, the use of sizes listed inthis Standard is to be encouraged.All of the sizes included in this Standard are not nec-essarily produced in all metals and grades. Producersor distr
44、ibutors should be consulted to determine avail-ability of a particular thickness or thickness/width com-bination for a given metal product.3 USE OF TABLESWherever possible, sizes should be selected from thecolumns headed “First Choice.” Only if no size in the pre-ferred list is suitable should a sel
45、ection be made from thecolumns headed “Second Choice” or “Third Choice.”Lengths should be selected from the preferred list.4 BASIS OF TABLESThe sizes in this Standard are derived from a list of pre-ferred metric sizes in which each number is approximately60% greater than the number preceding it (ANS
46、I B4.2 orISO 497 Series R5H11032). Second Choice sizes are in incrementsof 25% (Series R10H11032) and Third Choice sizes in incrementsof 12% (Series R20H11032). Some deviations from this principleoccur as the result of minor rounding. The selected sizesalso reflect standard material sizes in ISO and
47、 nationalstandards in traditional metric countries.5 TOLERANCESMaterial product tolerances are shown in applicableinternational or national product standards. Normal tol-erances shown in international standards are generallylarger and could be up to twice as large for metric ma-terial compared with
48、customary inch tolerances used inASME B32.100-2005 PREFERRED METRIC SIZES FOR FLAT, ROUND, SQUARE,RECTANGULAR, AND HEXAGONAL METAL PRODUCTS2Table 1 Preferred Thicknesses, D (mm), for All Flat Metal ProductsFirst Second Third First Second ThirdChoice Choice Choice Choice Choice Choice. 0.05 . . . 4 .
49、 . . . . . 0.06 . . . . . . . . . . . . 4.5. 0.08 . . . . . . 5 . . . 0.1 . . . . 5.5. . 0.11 6 . . . . . . . 0.12 . . . . . . . . . 7.5. . 0.14 . . . . . . 7.50.16 . . . 8 . . . 0.18 . . . . . . 9.5. . . 0.20 . 10 . . . . 0.22 . . . . . . 11.50.25 . . . . . . . . . 12 . . . . . 0.28 . . . . . . 14.5. . . 0.30 . . . 15.5. . 0.35 16 . . . . . . 0.4 . . . . . . 18.5. . 0.45 . . . 20 . . . . . . 0.50 . . . 22.5. . 0.55 25 . . . . . . 0.6 . . . . 28.5. . 0.65 . . . 30 . . . . . . . . . 0.70 . . 32.5. . 0.75 . . . . . . 35.5. . . 0.80 . . . 38.5. . . . . . 0.90 40 . . 1 . . . . 45.5. . . . .
