1、Designation: D5204 17Standard Classification System and Basis for Specification forPolyamide-Imide (PAI) Molding and Extrusion Materials1This standard is issued under the fixed designation D5204; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript 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 c
3、lassification system covers polyamide-imide ma-terials suitable for injection molding and extrusion.1.2 The properties included in this classification system arethose required to identify the compositions covered. It ispossible that other requirements are necessary to identifyparticular characterist
4、ics important to specialized applications.The use of suffixes as shown in Section 5 is one way ofspecifying these requirements.1.3 This standard allows for the use of recycled materialsprovided that specification requirements based upon this clas-sification system are met.1.4 This classification sys
5、tem and subsequent line call-out(specification) is intended to be a means of calling out plasticsmaterials used in the fabrication of end items or parts. It is notintended for the selection of materials. Material selection needsto be made by those having expertise in the plastics field aftercareful
6、consideration of the design and the performancerequired of the part, the environment to which it will beexposed, the fabrication process to be employed, the inherentproperties of the material other than those covered by thisclassification, and the economics.1.5 The values stated in SI units are to b
7、e regarded as thestandard. (Reporting in inch-pound units is acceptable.)1.6 The following precautionary caveat pertains only to thetest methods portion, Section 11, of this classification system:This standard does not purport to address all of the safetyconcerns, if any, associated with its use. It
8、 is the responsibilityof the user of this standard to establish appropriate safety,health, and environmental practices and determine the appli-cability of regulatory limitations prior to use.NOTE 1There is no known ISO equivalent to this standard.1.7 This international standard was developed in acco
9、r-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 AST
10、M Standards:2D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and Permit-tivity (Dielectric Constant) of Solid Electrical InsulationD256 Test Methods for Deter
11、mining the Izod PendulumImpact Resistance of PlasticsD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD618 Practice for Conditioning Plastics for TestingD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD792 T
12、est Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD883 Terminology Relating to PlasticsD1525 Test Method for Vicat Softening Temperature ofPlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1708 Test Method for Tensile Properties of Plastic
13、s by Useof Microtensile SpecimensD2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics (Oxygen Index)D3641 Practice for Injection Molding Test Specimens ofThermoplastic Molding and Extrusion MaterialsD3892 Practice for Packaging/Packing of Plast
14、icsD4000 Classification System for Specifying Plastic Materi-als1This classification system is under the jurisdiction ofASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Dec. 1, 2017. Published January 2018. Origi
15、nallyapproved in 1991. Last previous edition approved in 2013 as D5204 - 13. DOI:10.1520/D5204-17.2For 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 Docu
16、ment Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recogniz
17、ed principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1E29 Practice for Using Significant Digits in Test Data toDetermine
18、Conformance with SpecificationsIEEE/ASTM SI-10 Standard for Use of the InternationalSystem of Units (SI): The Modern Metric System2.2 Military and Federal Specifications and Standards:3MIL-P-46179A Plastic Molding and Extrusion Materials,Polyamide-Imide (PAI)NOTE 2MIL-P-46179A property requirements
19、are the basis of Clas-sification System D5204. The Department of Defense adopted Classifica-tion System D5204 on July 27, 1994, and canceled MIL-P-46179A.2.3 SAE Specifications:4AMS 3670B Polyamide-Imide Bar, Rod, and ShapesMolded or ExtrudedAMS 3670/1B Unfilled Polyamide-Imide Bar, Rod andShapesAMS
20、 3670/2B Polyamide-Imide Bar, Rod and Shapes 20-Graphite-3-Polytetrafluoroethylene FilledAMS 3670/3B Polyamide-Imide Bar, Rod and Shapes 12-Graphite-3-Polytetrafluoroethylene FilledAMS 3670/4C Polyamide-Imide Bar, Rod and Shapes 30Glass FiberAMS 3670/5C Polyamide-Imide Bar, Rod and Shapes 30Carbon G
21、raphite Fiber3. Terminology3.1 The terminology used in this classification system is inaccordance with Terminology D883 and D1600.3.2 Definitions of Terms Specific to This Standard:3.2.1 polyamide-imide (PAI), na polymer that is com-posed of linkages of all random, or all block, or all alternating,o
22、r any combination thereof, amide and imide units in thestructural backbone.4. Classification4.1 The polyamide-imide materials are designated PAI, asspecified in Terminology D1600.4.2 Polyamide-imide materials are classified into groupsthat are subdivided into classes and grades as shown in TablePAI.
23、4.2.1 An example of this classification system is as follows:The designation PAI012L23 would indicate from Table PAI:PAI = Polyamide-imide as found in Terminology D1600,01 (Group) = Injection molding material,2 (Class) = Wear resistance PAI, andL23 (Grade) = Nominal 20 % graphite and 3 % PTFE with t
24、he require-ments given in Table PAI.4.2.2 To facilitate the incorporation of special materials notcovered in Table PAI, the “other” category (0) for group, class,and grade is shown on the table with the basic properties to beobtained from Table A.4.3 Use Table A to specify physical property requirem
25、entsfor other PAI materials. These properties are shown by asix-character designation. The designation consists of the letterA and the five digits comprising the cell numbers for theproperty requirements in the order as they appear in Table A.4.3.1 Although the values listed are necessary to include
26、 therange of properties available in existing materials, not everypossible combination of the properties exists or can be ob-tained.4.3.2 Asingle letter is used to identify the grade and indicatethe major reinforcement or combinations, or both, along withtwo digits that indicate the percentage of ad
27、ditive(s) by totalmass. The reinforcement and additive letter designations andassociated tolerance levels are shown in Table 1.TABLE 1 Reinforcement-Filler Symbols and TolerancesCategory Material ToleranceC Carbon or graphite fiber reinforced 3 percentage pointsG Glass fiber reinforced 3 percentage
28、pointsL Lubricants 3 percentage pointsM Minerals 3 percentage pointsR Combinations of reinforcements orfillers, or both5 percentage points4.3.3 This part of the classification system uses the type andpercentage of additive to designate the modification of thebasic material. To facilitate this design
29、ation, the type andpercentage of additive is frequently shown on the supplierstechnical data sheet. If necessary, additional requirements areindicated by use of the suffix part of the system, as given inSection 5.4.3.4 Reinforced, filled, and lubricated versions of PAImaterials that are not in Table
30、 PAI are classified in accordancewith Tables PAI and A. Table PAI is used to specify the Groupor group and class of PAI and Table A is used to specify theproperty requirements. An example of this classification sys-tem for a polyamide-imide material containing 40 % glass is asfollows:The designation
31、 PAI0130G40A61550PAI0130 = polyamide-imide from Table PAI,G40 = glass reinforced at 40 % nominal level,A = Table A physical-property requirements,6 = tensile strength, 172 MPa, min,1 = elongation, 4 %, min,5 = flexural strength, 269 MPa, min,5 = flexural modulus, 11700 MPa, min, and0 = unspecified p
32、roperty.If no properties are specified, the designation would be PAI0130G40A00000.5. Suffixes5.1 When additional requirements are needed, based onapplication, that are not covered by the basic requirements(Table PAI) or cell-table requirements (Table A), they areindicated through the use of suffixes
33、.5.2 Use the suffixes found in Classification System D4000(Table 3) for additional requirements as appropriate.Additionalsuffixes will be added to Classification System D4000 as testmethods and requirements are developed and requested.5.2.1 An example of this classification system using a suffixis a
34、s follows:3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.4Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,PA 15096-0001, http:/www.sae.org.D5204 172The designation PAI0
35、13G30CBXXXPAI013G30 = polyamide-imide material as described in Table PAI,C = melting point / softening point from Classification SystemD4000B = Test Method D1525, Rate A (Vicat), andXXX = three digit number indicating minimum value, C.5.3 Suffixes for electrical properties, if required, are foundin
36、Table SE in the Supplementary Requirements section of thisstandard.6. General Requirements6.1 Basic requirements from Table A, as they apply, arealways in effect unless these requirements are superseded byspecific suffix requirements, which always take precedence.6.1.1 The material composition shall
37、 be uniform and shallconform to the requirements specified herein.7. Detail Requirements7.1 Test specimens for the various materials shall conformto the requirements prescribed in Table A and the suffixrequirements as they apply.7.2 For the purpose of determining conformance, all speci-fied limits i
38、n this specification (line callout) based on thisclassification system, are absolute limits, as defined in PracticeE29.7.2.1 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 witha spe
39、cification based on this classification system is based onthis comparison.8. Sampling8.1 Sampling shall be statistically adequate to satisfy re-quirements of 12.2. A batch or lot of material is defined asmaterial produced in a single compound blend.9. Test Specimen9.1 Dry pellets before molding test
40、 specimens. Pellets driedon trays at 149C (300F) in a desiccant air drier for aminimum of 24 h have been found to be satisfactory forinjection molding.9.2 Unless otherwise specified, prepare injection and extru-sion resins test specimens by injection molding in accordancewith Practice D3641.NOTE 3Ty
41、pical conditions for molding are melt temperature of 315 to370C (600 to 700F) and mold temperature of 195 to 215C (380 to420F), depending on the product. Because of the equipment requirementsand difficulty associated with molding PAI, the manufacturer normallydoes all molding of parts.10. Conditioni
42、ng10.1 Postcure all test specimens in accordance with themanufacturers instructions.10.2 Condition all test specimens for a minimum of 40 h at23C and 50 % relative humidity in accordance with 3.1.2 ofPractice D618 after postcuring and before testing.11. Test Methods11.1 Determine the properties enum
43、erated in this classifica-tion system in accordance with the relevant methods as theyapply.11.2 Specify methods for reinforcement and additive con-centration.12. Certification and Inspection12.1 Inspection and certification of the material suppliedwith reference to a specification based on this clas
44、sificationsystem 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 and shall consist ofthe tests listed, as they apply, as follows: tensile strength atbreak, tensile elongation at break, a
45、nd specific gravity.12.3 Periodic check inspection shall consist of the testsspecified for all requirements of the material under thisclassification system. Inspection frequency shall be adequate toensure that the material is certifiable in accordance with 12.4NOTE 4If any failure occurs, it is acce
46、ptable to retest the material toestablish conformity.12.4 Certification shall state that the material was manufac-tured by a process in statistical control, sampled, tested, andinspected in accordance with this classification system, andthat the average values meet the requirements of the specifi-ca
47、tion (line call-out).12.5 A report of the test results shall be furnished whenrequested. The report shall consist of the lot-acceptance inspec-tion for the shipment. The results of the most recent periodic-check inspection shall also be furnished when requested by thepurchaser.13. Packaging and Pack
48、age Marking13.1 For packing, packaging, and package marking, theprovisions of Practice D3892 shall apply.14. Keywords14.1 extrusion material; line call-out; molding material;polyamide-imideD5204 173TABLE PAI Requirements for Polyamide-Imide PlasticsGroup Description Class Description Grade Descripti
49、onTensile Strength,Test MethodD1708,MPa (psi), minTensile Elongation,Test MethodD1708,%,minSpecific Gravity,Test Method D79201 Injection Molding 1 general purpose M00 0 % mineral 158 (23 000) 9 1.36 to 1.39M03 3 % mineral 158 (23 000) 9 1.39 to 1.430 other2 wear resistance L15 12 % graphite, 3 % PTFE 124 (18 000) 5 1.44 to 1.48L23 20 % graphite, 3 % PTFE 124 (18 000) 5 1.48 to 1.52L20 12 % graphite, 8 % PTFE 97 (14 000) 4 1.48 to 1.52R30 30 % filled 69 (10 000) 4 1.52 to 1.59R35 35 % filled 110 (16 000) 3 1.56 to 1.60R45 45 % filled 96 (14 000) 3
