1、Designation: B830 11Standard Specification forUniform Test Methods and Frequency1This standard is issued under the fixed designation B830; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in paren
2、theses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers a standard basis for uniformtesting and frequency to determine physical and electricalcompliance for aluminum and copper dra
3、wing stock, andaluminum and copper conductors.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.2.1 ExceptionResistivity is measured
4、in SI units.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.3
5、 National Bureau of Standards:3Handbook 100, Copper Wire Tables2.4 Canadian Standards Association:4CAN/CSA-ISO 9001-08 Quality Management Systems RequirementsCAN/CSA Z299.3-85 (R2006) Quality Assurance Program- Category 32.5 ANSI Standards:5ANSI/ISO/ASQ 3534-1-2006 Statistics-Vocabulary andSymbols P
6、art 1-General Statistical Terms and Terms UsedIn ProbabilityANSI/ISO/ASQ 3534-2-2006 Statistics-Vocabulary andSymbols Part 2-Applied StatisticsANSI/ISO/ASQ Q9001-2008 Quality Management Sys-tems - RequirementsANSI/ISO/ASQ Q9004-1-2009 Managing for the SustainedSuccess of an Organization A Quality Ma
7、nagementApproachANSI/ASQC C1-1996 Specification of General Require-ments for a Quality ProgramANSI/ASQC S1-1996 AnAttribute Skip-Lot Sampling Pro-gramANSI/ASQ Z1.4-2008 Sampling Procedures and Tables forInspection by Attributes3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 ac
8、ceptable quality level (AQL)the maximum per-cent nonconforming (or the maximum number of nonconfor-mities per hundred units) that, for purposes of samplinginspection, can be considered as a process average.3.1.2 average outgoing quality (AOQ)the average qualityof outgoing product, including all acce
9、pted lots or batches, plusall lots or batches not accepted after such lots or batches havebeen effectively 100 % inspected and all nonconforming unitsreplaced by conforming units.3.1.3 CPKProcess Performance Index.Discussion:Capability in Relation to Spec Mean:USL = 5.0LSL = 1.0MEAN = 2.01This speci
10、fication is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.02 onMethods of Test and Sampling Procedure.Current edition approved Oct. 1, 2011. Published November 2011. Originallyapproved in 1993. Last previous edition approved
11、 in 2003 as B830 97 (2003).DOI: 10.1520/B0830-11.2For 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 the standards Document Summary page onthe ASTM website.3Available f
12、rom National Technical Information Service (NTIS), 5301 ShawneeRoad, Alexandria, VA 22312.4Available from Canadian Standards Association (CSA), 5060 Spectrum Way,Suite 100 Mississauga, Ontario L4W5N6 CANADA.5Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New Y
13、ork, NY 10036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Standard deviation (s)=0.5CPK tells the capability of a process based upon the worst case view ofthe data.The equation is:CPK = the lesser of:USL 2 MEA
14、N!3sorMEAN 2 LSL!3s(1)For example:CPK 55.02.0!1.5or2.01.0!1.5(2)5 2.0 or 0.675 0.67A negative value for CPK indicates that the mean is outsidethe specification limits. A CPK of zero indicates that the meanis equal to one of the specification limits.ACPK between 0 and1.0 means that part of the 6 sigm
15、a limits falls outside thespecification limits. A CPK of 1.0 means that one end of the 6sigma limits falls on a specification limit. A CPK larger than1.0 means that the 6 sigma limits fall completely within thespecification limits. See Explanatory Note 1 for an exampleinterpretation of CPK values an
16、d actions to follow.Capability indices are useful tools in the analysis of capa-bility data. The most useful index is CPK, since it formulatescapability in a manner that relates to shifts in the mean of thedistribution away from the midpoint.3.1.4 lota group of production units of one type and sizeo
17、f wire, which were produced during the same time periodunder similar production conditions, and are presented foracceptance at the same time. The mass will be defined in theASTM document for the specific product to be tested.3.1.5 process averagethe average percent nonconformingor average number of
18、nonconformities per hundred units(whichever is applicable) of product submitted by the supplierfor original inspection. Original inspection is the first inspec-tion of a particular quantity of product as distinguished fromthe inspection of product that has been resubmitted after priorrejection. When
19、 double or multiple sampling is used, only thefirst sample results shall be included in the process averagecalculation.3.1.6 production unita coil, reel, spool, or other packageof drawing stock/wire that represents a single usable length.3.1.7 samplethe production unit or units from which a testspec
20、imen or specimens have been removed and which areconsidered to have properties representative of the lot.3.1.8 specimena length of drawing stock/wire removedfor test purposes.4. Methods for Ensuring Product Compliance4.1 Acceptance Sampling:4.1.1 When acceptance sampling is used, statistical sam-pli
21、ng of each lot shall be presented for inspection in accordancewith ANSI/ASQ Z1.4-2008. Sampling of each lot shall bepresented for normal inspection in accordance with the sam-pling system described by ANSI/ASQ Z1.4-2008.4.1.2 Diameter and tensile shall be tested using GeneralInspection Level 1 with
22、an AQL (acceptable quality level) of4.0 %. (See Table 1.)4.1.3 Resistivity shall be tested using Special InspectionLevel S-4 with an AQL of 4.0 %. (See Table 2.)4.1.4 All other material properties shall be tested per thespecific level and AQL in ANSI/ASQ Z1.4-2008 as required inthe ASTM specificatio
23、n for the specific product.4.1.5 Test records shall meet the requirements of ANSI/ASQ Q9001-2008, Section 4.16.4.2 Conformance Criteria:4.2.1 Failure of a specimen to conform to the applicablerequirements of ASTM shall constitute failure of the produc-tion unit from which the specimen was taken. Sam
24、pling of eachlot shall be switched according to the rules described inANSI/ASQ Z1.4-2008. (See Fig. 1.)4.2.2 Any lot of drawing stock/wire that has been sampledin accordance with 4.1.2, 4.1.3,or4.1.4, and from which thenumber of specimens failing to comply with the requirementsdoes not equal or exce
25、ed the appropriate reject number of thesampling Table 1 used, shall be considered as complying withthe requirements of ASTM.4.2.3 Rejected lots may be screened to remove nonconform-ing production units by testing one specimen from eachproduction unit in the lot for the failing characteristic.4.2.4 S
26、ample SizeThe sample size shall be the number ofproduction units selected.4.3 Provisions for Skip-lot Inspection:4.3.1 When reduced inspection is in effect (see 4.2), skip-lotinspection shall be allowed when the preceding ten lots haveTABLE 1 Sampling for Diameter and Tensile Properties Except Joint
27、sNOTEThis sampling plan was taken from ANSI/ASQ Z1.4-2008. General Inspection Level I, normal sampling was used, with an AQL (AcceptanceQuality Level) of 4.0 %.Number of Units in Lot Sample Sample SizeCumulativeSample SizeAcceptanceNumberRejectNumber1to3 firstAall all 0 14to90 firstA3391 to 280 firs
28、t 8 8 0 2second 8 16 1 2281 to 500 firstsecond131313260334501 to 1200 first 20 20 1 4second 20 40 4 5ASingle sampling onlyB830 112been accepted in accordance with ANSI/ASQ Z1.4-2008.Skip-lot testing shall be in accordance with ANSI/ASQCS1-1996.4.3.2 When skip-lot inspection is in effect, normal insp
29、ec-tion (see 4.1) shall be instituted if any lot is found unaccept-able.4.4 When skip-lot inspection (see 4.3) is in effect, and thepreceding ten inspected lots have been accepted, audit inspec-tion shall be instituted by the manufacturer in accordance withthe following statistical process control (
30、SPC) program re-quirements.4.4.1 CPK 1.0 for 10 lots in control with less than 2out-of-control indications.5. Statistical Process Control5.1 When statistical process control (SPC) is used, themanufacturer shall comply with CSAStandard Z299.3, Section3.5, ANSI/ASQ Q9004-1-2009, Sections 10 and 20.5.1
31、.1 Basic inspection and testing system requirements shallconform to ANSI/ASQ Q9001-2008, Section 4.10.5.2 Statistical Techniques:5.2.1 Identify and classify product, process, and servicecharacteristics for which statistical techniques will be used asbasis for the assurance and control of quality and
32、 acceptance orrejection of lots.5.2.2 When statistical techniques are used, the propertybeing evaluated shall comply with the requirements of theapplicable ASTM standard. The process performance index(CPK) shall not be less than 1.0. A process performance index(CPK) of 1.3 should be considered a goa
33、l.5.2.3 Other physical or electrical properties shall havestatistical techniques applied at the suppliers option or ifspecified in the applicable ASTM standard.5.2.4 Select appropriate statistical techniques and confi-dence levels for process control and product acceptance andindicate the basis for
34、selection. Control charts and statisticaldata shall follow ASTM Manual 76for form, style, and datapresentation.5.2.5 Apply the statistical techniques selected, review themfor adequacy, and monitor their application to ensure thespecified ASTM requirements are met.5.2.6 Include or reference the selec
35、ted statistical techniquesused for product or service acceptance or special processmonitoring specified in the inspection and test plan(s), ANSI/ASQ Q9001-2008, Sections 4.10 and 4.20.5.3 Quality Audits:5.3.1 Control charts following the form and style of ASTMManual 76shall be provided, if requested
36、, to the customer witheach order that is representative of the processes used in themanufacture of the product.5.3.2 Records shall be kept in accordance with ANSI/ASQQ9001-2008, Section 4.16.6. Keywords6.1 acceptable quality level (AQL); average outgoing qual-ity (AOQ); control chart; lot; lower spe
37、cification limit (LSL);process average; process control ratio (CPK); skip-lot inspec-tion; statistical process control (SPC); upper specification limit(USL)6Manual on Presentation of Data and Control Chart Analysis, ASTM Manual7, ASTM,1992.TABLE 2 Sampling for Resistivity PropertiesNOTEThis sampling
38、 plan was taken from ANSI/ASQ Z1.4-2008. Special Inspection Level S-4, normal sampling was used, with an AQL (AcceptanceQuality Level) of 4.0 %.Number of Units in Lot Sample Sample SizeCumulativeSample SizeAcceptanceNumberRejectNumber1to3 firstAall all 0 14to90 firstA3391 to 500 first 8 8 0 2second
39、8 16 1 2501 to 1200 first 13 13 0 3second 13 26 3 4ASingle sampling onlyFIG. 1 Switching Rules for ANSI/ASQ Z1.4-2008 SystemB830 113EXPLANATORY NOTESNOTE 1The following is an example of how one might interpret theCPK results and determine the frequency of monitoring a specific test:Between 0 and 1.0
40、 CPK = Inspection required as process un-stable, failures will occur.Between 1.0 and 1.33 CPK = Monthly Audit required to preventprocess driftBetween 1.33 and 1.5 CPK = Process Capability Audit at least every6 monthsMore than 1.5 = Capability Audit annually.ASTM International takes no position respe
41、cting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This st
42、andard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Internat
43、ional Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown belo
44、w.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).B830 114
