ASTM D5740-2016 0501 Standard Guide for Writing Material Standards in the Classification Format《分类 格式书写材料标准的标准指南》.pdf

1、Designation: D5740 16Standard Guide forWriting Material Standards in the Classification D4000 For-mat1This standard is issued under the fixed designation D5740; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis

2、ion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis guide has been prepared to aid in the writing of material standards using the ClassificationD4000 format. The following tem

3、plate is included which might be used directly for a draft documentsimply by filling in the blanks. See appendixes for additional explanatory information.Standard Classification System for and Basis for Specification for _ Molding and Extrusion Materials (_)1. Scope*1.1 This classification system co

4、vers _ materials suitablefor _. The inclusion or exclusion of recycledplastics in this classification system must be addressed here.1.2 The properties included in this standard are thoserequired to identify the compositions covered. Other require-ments necessary to identify particular characteristic

5、s importantto specialized applications are to be specified by using suffixesas given in Section 5.1.3 This classification system and subsequent line callout(specification) are intended to provide a means of calling outplastic materials used in the fabrication of end items or parts.It is not intended

6、 for the selection of materials. Materialselection can be made by those having expertise in the plasticfield only after careful consideration of the design and theperformance required of the part, the environment to which itwill be exposed, the fabrication process to be employed, thecosts involved,

7、and the inherent properties of the material otherthan those covered by this standard.NOTE 1Insert Note 1 here to show the appropriate ISO equivalencystatement.1.4 The following precautionary caveat pertains only to thetest method portion, Section 11, of this classification system:This standard does

8、not purport to address all of the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:

9、2D618 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD5205 Classification System and Basis for

10、Specification forPolyetherimide (PEI) MaterialsD5630 Test Method for Ash Content in PlasticsD6779 Classification System for and Basis of Specificationfor Polyamide Molding and Extrusion Materials (PA)D7209 Guide for Waste Reduction, Resource Recovery, andUse of Recycled Polymeric Materials and Produ

11、cts (With-drawn 2015)3NOTE 2Omit D7209 if use of recycled plastic is not allowed.E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications1This guide is under the jurisdiction of ASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D

12、20.94 on Government/IndustryStandardization.Current edition approved Sept. 1, 2016. Published September 2016. Originallyapproved in 1995. Last previous edition approved in 2011 as D5740 11. DOI:10.1520/D5740-16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Cust

13、omer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardC

14、opyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 ISO Standards:4ISO 34511 PlasticsDetermination of Ash ContentPart1: General Methods3. Terminology3.1 Except for the terms defined below, the terminologyused in this classification sys

15、tem is in accordance with Termi-nologies D883 and D1600.4. Classification4.1 _ materials are classified into groups according totheir composition. These groups are subdivided into classesand grades as shown in the Basic Property Table (Table _).Anexample of a basic property table can be found in Cla

16、ssificationSystem D6779. The property table contains a footnote referringto Section _ for reference to specimen source and prepara-tion.NOTE 3An example of this classification system is given as follows:The specification _ indicates the following:_ = _ as found in Terminology D1600,_ = _ (group),_ =

17、 _ (class), and_ = requirements given in Table _ (grade).4.1.1 Reinforced, filled, and lubricated versions of _materials that are found in Table _ are classified accordingto the reinforcement used and the nominal level, by weightpercent, of the reinforcement. The grade is identified by asingle lette

18、r that indicates the filler or reinforcement used andtwo digits, in multiples of 5, that indicate the nominal quantityin percent by weight. Thus, a grade containing 35 % glassreinforcement would be indicated by _ G35. This speci-fication indicates_ = _ as found in Terminology D1600,_ = _ (group),_ =

19、 _ (class), and_ = 35 % glass reinforcement and requirements given Table _ (grade).The reinforcement letter designations and associated toler-ance levels are shown in the following table:TABLE 1 Reinforcement-FillerASymbolsBand TolerancesSymbol Material ToleranceC Carbon and graphite 2 %D Alumina tr

20、ihydrate 2 %EClayF Cellulose 2 %G Glass 2 %H Aramid 2 %J Boron 2 %K Calcium carbonate 2 %L Lubricants (for example: PTFE, graphite) Depends uponmaterial andprocessto bespecified.M Mineral 2 %N Natural organic (for example: cotton, sisal,hemp, flax)2 %PMica2Q Silica 2 %R Combinations of reinforcement

21、s and/or fillers 2 %S Synthetic organic 2 %T Talcum 2 %V Metal 2 %W Wood 2 %X Not specified To be specifiedAAsh content of filled and/or reinforced materials is to be determined using eitherTest Method D5630 or ISO 3451-1 where applicable.BAdditional symbols will be added to this table as required.N

22、OTE 4This part of the classification system uses the percent ofreinforcements or additives, or both, in the callout of the modified basicmaterial. The types and percentages of reinforcements and additives aresometimes shown on the suppliers technical data sheet. If necessary,additional callout of th

23、ese reinforcements and additives can be accom-plished by use of the suffix part of the system (see Section 5).NOTE 5Materials containing reinforcements or fillers, or both, atnominal levels not in multiples of five are included in the nearest gradedesignation. For example, a material with a nominal

24、glass fiber level of33 % is included with Grade G35 as shown in 4.1.1.4.1.2 To facilitate incorporation of future or special materi-als the “other” category for group (00), class (0), and grade (0)is shown in Table _.4.2 Reinforced, filled, and lubricated versions of _ mate-rials that are not in Tab

25、le _ are classified in accordance withTables _ and A or B. Table _ is used to specify the Group orthe group and class of _ and Table A or B is used to specifythe property requirements.4.2.1 Reinforced, filled, and lubricated variations of thebasic materials are identified by a single letter from Tab

26、le 1 thatindicates the filler and/or reinforcement used and two digitsthat indicate the nominal quantity in percent by weight. Asecond letter, from Table 1a, when desired, is used to indicatethe form or structure of the reinforcement and/or filler, but isnot used for functional mixtures. Thus, a let

27、ter designation Gfor glass, E for beads or spheres or balls, and 33 for percent byweight, GE33, specifies a reinforced or filled material with 33percent by weight in the form of glass beads, spheres, or balls.The reinforcement letter designations and associated tolerancelevels are shown in the previ

28、ous table. Form and structure letterdesignations are shown in the following table:TABLE 1a Symbols for the Form or Structure of Fillers andReinforcing MaterialsSymbol Form or StructureC Chips, cuttingsD Fines, powdersE Beads, spheres, ballsF FiberG GroundH WhiskerK Knitted fabricL LayerM Mat (fabric

29、, thick)N Non-woven (fabric, thin)P PaperR RovingS FlakeT CordV VeneerW Woven fabricYYarnX Not specified4.2.2 Specific requirements for reinforced, filled, or lubri-cated _ materials shall be shown by a six-character desig-nation. The designation will consist of the letter “A” or “B” and4Available f

30、rom American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.D5740 162the five digits comprising the cell numbers for the propertyrequirements in the order as they appear in Tables A or B.4.2.2.1 Although the values listed are necessary to includ

31、ethe range of properties available in existing materials, notevery possible combination of the properties exists or can beobtained.4.2.3 When the grade of the basic material is not known, oris not important, the use of the “0” grade classification shall beused for the reinforced materials in this sy

32、stem.NOTE 6An example of this classification for a reinforced _ materialis given as follows. The specification _ would indicate the followingmaterial requirements._ = _ from Table _,_ = _,_ = _,_ = _,_ = _,_ = _, and_ = _.If no properties are specified, the specification would be _.5. Suffixes5.1 Wh

33、en additional requirements are needed that are notcovered by the basic requirements or cell-table requirements,they shall be indicated through the use of suffixes.5.2 A list of suffixes can be found in Classification SystemD4000 (Table 3) and are to be used for additional requirementsas appropriate.

34、 Additional suffixes will be added to thatstandard as test methods and requirements are developed andrequested.6. General Requirements6.1 Basic requirements from the property tables or celltables are always in effect unless superseded by specific suffixrequirements, which always take precedence.6.2

35、The plastics composition shall be uniform and shallconform to the requirements specified herein.7. Detail Requirements7.1 The materials shall conform to the requirements inTables _, _, _, and suffix requirements as they apply.7.2 For purposes of determining conformance, all specifiedlimits for a spe

36、cification (line callout) based on this classifica-tion system are absolute limits, as defined in Practice E29.7.2.1 With the absolute method, an observed value or acalculated value is not rounded, but is to be compared directlywith the limiting value. Conformance or nonconformance isbased on this c

37、omparison.8. Sampling8.1 Sampling shall be statistically adequate to satisfy therequirements of 12.4.8.2 A batch or lot is construed as a unit of manufacture asprepared for shipment and can consist of a blend of two ormore “production runs.”9. Specimen Preparation9.1 Indicate the source of the test

38、specimens for the relevanttest methods.9.2 Prepare the specimens by a _ process in accordancewith _.An example is found in Classification System D6779.10. Conditioning10.1 Test specimens shall be conditioned in the standardlaboratory atmosphere in accordance with Procedure A ofPractice D618 before p

39、erforming the required tests.NOTE 7If another conditioning procedure is used, replace the previ-ous one.10.2 Conduct those tests influenced by ambient conditionsin the standard laboratory atmosphere of 23C and 50 %relative humidity.11. Test Methods11.1 Determine the properties enumerated in this cla

40、ssifica-tion system by means of the test methods referenced in Section2.11.1.1 The number of tests shall be consistent with therequirements of Section 8 and 12.4.12. Inspection and Certification12.1 Inspection and certification of the material suppliedwith reference to a specification based on this

41、classificationsystem shall be for conformance to the requirements specifiedherein.12.2 Lot-acceptance inspection shall be the basis on whichacceptance or rejection of the lot is made. The lot-acceptanceinspection shall consist of:12.2.1 _.12.2.2 _.12.3 Periodic check inspection with reference to a s

42、pecifi-cation based upon this classification system shall consist of thetests for all requirements of the material under the specifica-tion. Inspection frequency shall be adequate to ensure thematerial is certifiable in accordance with 12.4.12.4 Certification shall be that the material was manufac-t

43、ured by a process in statistical control, sampled, tested, andinspected in accordance with this classification system, andthat the average values for the lot meet the requirements of thespecification (line callout).NOTE 8The ASTM publication Manual on Presentation of Data andControl Chart Analysis,

44、7th Edition, stock number MNL7A, providesdetailed information about statistical process control.12.5 A report of test results shall be furnished when re-quested. The report shall consist of results of the lot-acceptanceinspection for the shipment and the results of the most recentperiodic-check insp

45、ection.NOTE 9If recycled plastics are allowed in the standard, insert thefollowing phrase after the word “shipment” in the last sentence of 12.5:“;the percent by weight of recycled plastic, as defined in 3.1.47 of GuideD7209, if requested,”13. Packaging, Packing, and Marking13.1 The provisions of Pr

46、actice D3892 apply to packaging,packing, and marking of containers for plastic materials.D5740 16314. Keywords14.1 classification; classification system; line callout; plasticmaterialsAPPENDIXES(Nonmandatory Information)X1. LIST BY SECTIONS/EXPLANATORY INFORMATIONX1.1 ScopeModify 1.1 for material an

47、d processing.X1.2 Referenced DocumentsAdd documents as requiredand, if necessary, use footnotes in addition to those includedand renumber footnotes as required.X1.3 TerminologyInclude new terms, definitions, and ab-breviated terms as developed cooperatively between the writerof the standard and Subc

48、ommittee D20.92.X1.4 ClassificationModify for material, 4.1. Consult cur-rent Classification D4000 for listing.X1.5 SuffxesIf suffixes are needed that are specific to thematerials being classified, use the single-letter and two-digitsystem as found, for example, in Section 5 of ClassificationSystem

49、D5205.X1.6 General RequirementsIncludes basic requirementsas found in Classification D4000.X1.7 Detail Requirements.X1.8 Sampling.X1.9 Specimen PreparationExpand as required.X1.10 ConditioningModify for material.X1.11 Test Methods.X1.12 Inspection and Certification.X1.13 Packaging, Packing, and Marking.X1.14 Keywords.X2. GENERAL INFORMATIONX2.1 Fill in the material and examples for which thestandard applies.X2.2 The b