1、AN AMERICAN NATIONAL STANDARD ASME B32.100-2016Revision of ASME B32.100-2005 (R2011)Preferred MetricSizes for Flat, Round,Square, Rectangular, and HexagonalMetal ProductsASME B3 2.100-201 6(Revision of ASME B3 2.100-2005)Preferred MetricSizes for Flat, Round,Square, Rectangular,and HexagonalMetal Pr
2、oductsAN AMERICAN NATIONAL STANDARDxDate of Issuance: October 14, 2016ThisStandardwillberevisedwhentheSocietyapprovestheissuanceofanewedition.ThisStandardwillbecomeeffective1yearafter the Date of Issuance.PeriodicallycertainactionsoftheASMEB32CommitteemaybepublishedasCases.CasesarepublishedontheASME
3、Websiteunder the B32 Committee Page at go.asme.org/B32committee as they are issued.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages to provide corrections toincorrectlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratash
4、allbeusedon the date posted.The B32 Committee Page can be found at go.asme.org/B32committee. There is an option available to automatically receive an e-mail notification when errata are posted to a particular code or standard. This option can be found on the appropriate Committee Page after selectin
5、g “Errata” in the “Publication Information” section.ASME is the registered trademark of The American Society of Mechanical Engineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedto
6、assurethatindividualsfromcompetentandconcernedinterestshavehadanopportunity to participate.The proposed code orstandardwas made available for public review and commentthat providesan opportunityfor additional public input from industry, academia, regulatory agencies, and the public-at-large.ASME doe
7、s not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstli
8、abilityforinfringementofanyapplicableletterspatent,norassumesanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtherisk of infringement of such rights, is entirely their own responsibility.Participation by federal agency representative(s)
9、 or person(s) affiliated with industry is not to be interpreted as government or industryendorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME proceduresand policies, which precludes the issuanc
10、e of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersTwo Park Avenue, New York, NY 10016-5990Copyright 2016 byTHE AME
11、RICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ivAcknowledgement . . . . . . . . . . . . . . . . . . . . . . . .
12、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vCommittee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viCorrespondence With the B32 Committee . . . . . . . . . . . . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14、 . . . . . . . . . . . . . . . . . . . . . . . . . 13 Use of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Basis of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15、 . . . . . . . . . . 15 Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Nonmandatory AppendixA Related Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16、 . . . . . . 9Tables1 Preferred Thickness for All Flat Metal Products, mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Preferred Widths for Flat Metal Products, mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 Preferred Lengths for Flat Metal Prod
17、ucts, mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Preferred Diameters, D, of Round Metal Products, mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 Preferred Across Flat Sizes, D, of Square Metal Products, mm . . . . . . . . . . . . . . . . . . . .
18、 . . . . .56 Preferred Across Flat Sizes, D, of Hexagonal Metal Products, mm . . . . . . . . . . . . . . . . . . . . . . .57 Preferred Lengths of Round, Square, Rectangular, and Hexagonal Metal Products, mm . . . . . . . .58 Preferred Across Flat Sizes of Rectangular Metal Products, mm . . . . . .
19、 . . . . . . . . . . . . . . . . .69 Thickness Tolerances for Hot-Rolled Steel Sheet of Structural Qualities (ISO-4995, ISO 5002), mm610 Thickness Tolerances for Cold-Rolled Steel Sheet of Structural Qualities (ISO 4997), mm . . . . . .711 Tolerance for Hot-Rolled, Round, Square, and Hex Steel Bars
20、 (ISO 1035-4), mm . . . . . . . . . . . .712 Tolerances for Hot-Rolled Flat Bars (ISO 1035-4), mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .713 Tolerance for Cold-Finished, Round, Square, Rectangular, and Hex Steel Bars (ANSI B4.2), mm . .8iiiFOREWORDThe U.S. Department of Commerc
21、e, in its July 1971 report to Congress, titled “ A Metric America A Decision WhoseTime Has Come, ” recommended that the United States should change to the metric system of measurement through acoordinated national program. This action, along with subsequent increased metric activity in industry, res
22、ulted in anumber of requests from producers and users that the B32 Committee develop preferred series of metric sizes for thevarious forms of wrought metal mill products.The B32.100 standard is based on the previously published standards B32.3M-1984 and B32.4M-1980. Developmentof these standards was
23、 started in 1973. The proposal received Standards Committee B32 approval on June 4, 1974. It wassubsequently approved by the sponsor and submitted to the American National Standards Institute (ANSI) for designa-tion as an American National Standard. This was granted on July 9, 1974. The last edition
24、 was approved by ANSI onSeptember 24, 1984 and reaffirmed in 1994.The sizes in this Standard are derived from a list of preferred metric sizes in which each number is approximately 60%greater than the number preceding it (ANSI B4.2 or ISO 497 Series R5). Second Choice sizes are in increments of 25%(
25、Series R10) and Third Choice sizes in increments of 12% (Series R20). Some deviations from this principle occur as theresult of minor rounding. The selected sizes also reflect standard material sizes in ISO and national standards in tradi-tional metric countries.In 2002, the B32 Committee establishe
26、d a task force to draft a new metric standard for the product group: ASMEB32.100-200X Preferred Metric Sizes for Flat, Round, Square, Rectangular, and Hexagonal Metal Products.Material tolerances must be included in order to fully define the size of a product. International or leading nationalmetric
27、 standards data were used as the basis for the tolerance data included in this Standard. References to the sources ofthese tolerances have been made, and a list of related standards are shown in Nonmandatory Appendix A .The 2005 edition was approved by ANSI on February 11, 2005.The present edition d
28、eleted obsolete references, the year date of the referenced standards have been deleted, and somecorrections were made to Nonmandatory Appendix A . The present edition also includes additional data and clarificationrelated to para. 5.8 and Table 13 .The present edition was approved by ANSI on June 2
29、9, 2016.ivACKNOWLEDGEMENTData shown in this Standard were developed with the help of the global standards material published in the book, MetricStandards for Worldwide Manufacturing , with the permission of the publishers, ASME Press and GO metric USA .org.vASME B3 2 COMMITTEEMetal and Metal Alloy W
30、rought Mill Product Nominal Sizes(The following is the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSJ. A. Gruber, ChairA. R. Amaral, SecretarySTANDARDS COMMITTEE PERSONNELA. R. Amaral, The American Society of Mechanical EngineersD. O. Bankston, Jr., B
31、echtel National, Inc.D. Frikken, Becht Engineering Co.J. A. Gruber, J A Gruber however, they should not contain proprietary names orinformation.viiRequests that are not in the format described above may be rewritten in the appropriate format by the Committee priorto being answered, which may inadver
32、tently change the intent of the original request.ASME procedures provide for reconsideration of any interpretation when or if additional information that might affectan interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASMECommittee or Subcommit
33、tee. ASME does not “approve, ” “certify, ” “rate, ” or “endorse” any item, construction, proprietarydevice, or activity.Attending Committee Meetings. The B32 Standards Committee regularly holds meetings and/or telephone confer-ences that are open to the public. Persons wishing to attend any meeting
34、and/or telephone conference should contact theSecretary of the B32 Standards Committee. Future Committee meeting dates and locations can be found on the CommitteePage at go.asme.org/B32committee.viiiPREFERRED METRIC SIZES FOR FLAT, ROUND, SQUARE,RE CTANGULAR, AND HEXAGONAL METAL PRODUCTS1 SCOPEThis
35、Standard establishes a preferred series of metricthicknesses, widths, and lengths for flat metal products ofrectangular cross section. The thicknesses and widthsshown in this Standard are also applicable to basemetals that may be coated in later operations. ThisStandard also establishes a preferred
36、series of metricsizes for round, square, rectangular, and hexagonalmetal products.2 GENERALThe sizes in this Standard provide an orderly series ofthicknesses for all flat metal products and widths forrectangular cross-section metal products. The serieswas developed to provide a reasonable selection
37、ofmetal thicknesses from 0.050 mm to 300 mm and ofmetal widths from 10 mm to 5 000 mm. In each case,the series provides for some second, third, and sometimesfourth choice sizes (thicknesses and widths) to coverinstances where selection from the primary preferredsizes may be inadequate. Sufficient co
38、verage in logicalsteps is presented in the tables to adequately servemost of the general purpose requirements of industryfor flat metal products. This Standard provides anorderly series of lengths for flat metal products.This Standard also provides a series of sizes for each ofround, square, rectang
39、ular, and hexagonal forms of metalproducts used for general applications. The series wasdeveloped to provide a reasonable selection of metaldiameters from 0.020 mm to 320 mm for rounds anddistance-across-flats from 3 mm to 300 mm forsquares, various cross-section sizes from 1.6 mm by2 mm to 100 mm b
40、y 200 mm for rectangles, and from1.5 mm to 150 mm for hexagons. The series providesfor some second, third, and fourth choice diameters forrounds and second and third choice distance-across-flats for squares and hexagons, where selection fromthe primary preferred sizes may be inadequate. Theseries al
41、so provides for preferred lengths of rounds,squares, rectangles, and hexagons. Sufficient coveragein logical steps is presented in the tables to adequatelyserve most of the general purpose requirements ofindustry for round, square, rectangular, and hexagonalmetal products.It is recognized that for s
42、ome applications, particularlylarge-volume requirements in some metals for specificend uses, precise engineering requirements dictate aneed for sizes other than those presented in thisStandard. This Standard is in no way meant to precludethe use of such sizes where they are required. However, forgen
43、eral purpose applications or where requirementspermit some latitude in the selection of thickness or thick-ness/width/length combinations, the simplifiedpreferred sizes given in this Standard should facilitateinterchangeability of metals in design, reduce inventories,and increase the availability of
44、 warehouse stocks of thosesizes commonly used for general purpose applications. Insuch instances, the use of sizes listed in this Standard is tobe encouraged.All of the sizes included in this Standard are not neces-sarily produced in all metals and grades. Producers ordistributors should be consulte
45、d to determine availabilityof a particular thickness or thickness/width combinationfor a given metal product.3 USE OF TABLESWherever possible, sizes should be selected from thecolumns headed “First Choice. ” Only if no size in thepreferred list is suitable should a selection be madefrom the columns
46、headed “Second Choice” or “ThirdChoice. ” Lengths should be selected from the preferred list.4 BASIS OF TABLESThe sizes in this Standard are derived from a list ofpreferred metric sizes in which each number is approxi-mately 60% greater than the number preceding it ANSIB4.2 (Preferred Metric Limits
47、and Fits) or ISO 497 (Guideto the choice of series of preferred numbers and seriescontaining more rounded values of preferred numbers)Series R5. Second Choice sizes are in increments of25% (Series R10) and Third Choice sizes in incrementsof 12% (Series R20). Some deviations from this principleoccur
48、as the result of minor rounding. The selected sizesalso reflect standard material sizes in ISO and nationalstandards in traditional metric countries.5 TOLERANCESMaterial product tolerances are shown in applicableinternational or national product standards. Normal toler-ances shown in international s
49、tandards are generallylarger and could be up to twice as large for metric materialcompared with customary inch tolerances used in the U.S.Only a few major product groups will be covered by thisStandard, and they are specified in paras. 5.1 through 5.8 .ASME B32.100-201615.1 Hot-Rolled Steel SheetsPreferred sizes for hot-rolled steel sheets are shown inTables 1 through 3 . Tolerances for hot-rolled steel sheetsare specified in ISO 4995 (Hot-rolled steel sheet of struc-tural quality) and ISO 5002 (Hot-rolled and cold-reducedelectrolytic zinc-coated carbon steel sheet of commercial
