1、Designation: D7293 12Standard Specification forExtruded and Compression-Molded Shapes Made fromPolyetherimide (PEI)1This standard is issued under the fixed designation D7293; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、 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.INTRODUCTIONThis specification is intended to be a means of calling out plastic shapes used in the fabrication ofend items or
3、parts.1. Scope*1.1 This specification covers requirements and test methodsfor the dimensions, workmanship, and the properties of ex-truded and compression-molded sheet, plate, rod and tubularbar manufactured from polyetherimide (PEI) resins.1.2 The properties included in this specification are those
4、required for the compositions covered. It is possible that otherrequirements will be necessary to identify particular character-istics important to specialized applications. These shall bespecified by using the suffixes as given in Section 5.1.3 This specification does not allow for the use of recyc
5、ledplastics (as defined in Guide D7209).1.4 The values stated in English units are regarded asstandard in all property and dimensional tables. For referencepurposes, SI units are also included in Table 1 and Table S-PEI.1.5 This standard does not purport to address all of thesafety concerns, if any,
6、 associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE 1There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standar
7、ds:2D256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-
8、alsD883 Terminology Relating to PlasticsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD7209 Guide for Waste Reduction, Resource Recovery, andUse of Recycled Polymeric Materials and ProductsD5205 Classification System and Basis for Specif
9、ication forPolyetherimide (PEI) MaterialsIEEE/ASTM SI-10 American National Standard for Use ofthe International System of Units (SI): The Modern MetricSystem2.2 ANSI Standard:3Z1.4-1993 Sampling Procedures and Tables for Inspectionby Attributes3. Terminology3.1 DefinitionsFor definitions of other te
10、chnical termspertaining to plastics used in this specification, see Terminol-ogy D883.3.2 Definitions of Terms Specific to This Standard:3.2.1 rod, nextruded solid cylindrical shape with a mini-mum diameter of116 in. (1.6 mm).3.2.2 sheet, nflat stock with thickness greater than14-in.(6.4-mm).3.2.3 t
11、ubular bar, nextruded annular shapes with mini-mum inside diameter of38 in. (0.5 mm) and minimum wallthickness of116 in. (1.6 mm).1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current e
12、dition approved Aug. 1, 2012. Published October 2012. Originallyapproved in 2006. Last previous edition approved in 2006 as D7293 06. DOI:10.1520/D7293-06.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM
13、Standards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM
14、 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Classification4.1 This specification covers shapes extruded and compres-sion molded from polyetherimide (PEI) resins as listed in TableS-PEI. The PEI resin is included in the designation usingSpeci
15、fication D5205 callout.4.1.1 The type of PEI extruded shape shall be categorizedby composition.4.1.2 There shall be only one class of PEI shape, for virginproducts.4.1.2.1 Class 1General purpose product made using100 % virgin resin.4.2 The type and class shall be further differentiated basedon dimen
16、sional tolerances and dimensional stability (based onelevated temperature excursion testing). Grades 1 and 2 shapesare produced with the closest commercial tolerances andlowest stress levels for machined parts as delineated in Table Aand Table B. Any additional or custom tolerance requirementsare to
17、 be specified. Custom tolerances shall be noted followingthe grade designation.TABLE S-PEI Requirements for PEI Shapes, Dry-as-Manufactured (0.2 % Moisture)Type Description Class Description Grade ApplicableD5205CalloutADescription UltimateTensileStrength,min, psi (MPa)TensileElongation,% at Break,
18、minTensileModulus,min, psi (MPa)DimensionalStability,%, max01 1 Unfilled 1 D5205PEI 0113Generalpurpose14 000(97)50 425 000(2930)0.41 Unfilled 0 Other02 Glass filled 1 10 % glassreinforced1 . Generalpurpose14 500(100)2 500 000(3447)0.4Glass filled 1 20 % glassreinforced2 . Generalpurpose15 000(103)2
19、600 000(4137)0.4Glass filled 1 30 % glassreinforced3 D5205PEI0110BGeneralpurpose16 000(110)2 800 000(5516)0.4Glass filled 1 Glass rein-forced0 Other00 Other 1 Other 0 OtherAApplicable Classification System D5205 resin type to be specified on purchase order.BG30A99169TABLE A Dimensional Requirements
20、for Natural and Glass-Filled Extruded PEI RodASize, in.BDiameter Tolerance, in. Roundness TIR, in. Camber, in./ft116 +0.0020.001 0.002 212 /818 +0.0020.001 0.002 212 /8316 +0.0020.001 0.002 212 /814 +0.0030.001 0.002 212 /838 +0.0030.001 0.002 212 /812 +0.0030.001 0.002 212 /858 +0.0030.001 0.002 21
21、2 /834 +0.0030.001 0.002 212 /878 +0.0030.001 0.002 212 /81 +0.0030.001 0.002 114 /8118 +0.0050.000 0.005 114 /8114 +0.0050.000 0.005 114 /8138 +0.0050.000 0.005 114 /8112 +0.0050.000 0.005 114 /8158 +0.0050.000 0.005 114 /8134 +0.0050.000 0.005 114 /8178 +0.0050.000 0.005 114 /82 +0.0050.000 0.010
22、114 /8218 234 +0.0050.000 0.030 114 /83 +0.2500.000 0.060 1/4/4ABased on dry-as-manufactured condition and proper product storage and handling.BTo convert inches to millimetres, multiply by 25.40.D7293 122TABLE B Dimensional Requirements for Natural and Glass-Filled Extruded and Compression-Molded P
23、EI Sheets and Plates(Squareness Requirement Listed in 11.4)ASize, in.B,CThickness Tolerances, in. Length Camber, in./ft Width Bow, in./ft116 0.00534 /4316 /2332 0.00534 /4316 /218 +0.0250.00034 /4316 /2316 +0.0250.00034 /4316 /214 +0.0250.00034 /4316 /2516 +0.0250.00034 /4316 /238 +0.0250.00034 /431
24、6 /2716 +0.0250.00034 /4316 /212 +0.0250.00034 /4316 /258 +0.0250.00034 /4316 /234 +0.0250.00034 /4316 /278 +0.0250.00034 /4316 /21 +0.0250.00014 /4116 /2118 +0.0250.00014 /4116 /2114 +0.0250.00014 /4116 /2138 +0.0250.00014 /4116 /2112 +0.0250.00014 /4116 /2158 +0.0250.00014 /4116 /2134 +0.0250.0001
25、4 /4116 /2178 +0.2500.00014 /4116 /22 +0.0250.00014 /4116 /2Over 2 +0.1250.00014 /4116 /2ABased on dry-as-manufactured condition and proper product storage and handling.BTo convert inches to millimetres, multiply by 25.40.CWidth 24in. sheet (+0.5 in.-0). Length 48-in. sheet (+1.0 in.-0).4.3 The type
26、, class, and grade is further differentiated basedon dimensional stability (elevated temperature excursion test),Table S-PEI and dimensional requirements, Tables A and B.4.4 Property Tables4.4.1 Table S-PEI shall be used to describe both extruded orcompression-molded products.4.4.2 Table 1 shall be
27、used to describe extruded orcompression-molded products not included in Table S-PEI byway of a cell callout that includes the applicable Table S-PEItype and specific properties (Designations 1-7).4.4.3 To facilitate the incorporation of future or specialmaterials not covered by Table S-PEI, the othe
28、r category fortype, class, and grade (0010) is shown on the table with thebasic properties to be obtained from Table 1, as they apply (see4.5).4.4.4 Reinforcements and Additive MaterialsA symbol(single letter) shall be used for the major reinforcement orcombination or both along with two numbers tha
29、t indicate thepercentage of addition by mass with the tolerances as tabulatedbelow. This shall be included in all Table 1 callouts (see 4.5,Example 5).Symbol Material Tolerance(Based on the Total Mass)C Carbon andgraphite fiber2 %G Glass 2 %L Lubricants(for example,PTFE, graphite,silicone, andmolybd
30、enum disulfide)Depends uponmaterial andprocessto be specifiedM Mineral 2 %R Combinations ofreinforcements orfillers or both3 % for the total reinforcement4.5 Callout DesignationAone-line system shall be used tospecify materials covered by this specification. The systemuses predefined cells to refer
31、to specific aspects of thisspecification as illustrated in the following examples:4.5.1 Description:4.5.1.1 Example 1Product made from general purposePEI 0111:CELL CALLOUT: D7293 S-PEI01114.5.1.2 Example 2Product made from extruded PEI, 30 %glass-reinforced:CELL CALLOUT: D7293 S-PEI02134.5.1.3 Examp
32、le 3Product made from extruded PEI, 15 %graphite-filled with tensile strength greater than 8000 psi andelongation greater than 5 %:CELL CALLOUT: D7293 S-PEI0100 C15 230000004.5.2 The examples illustrate how a one-line, alphanumericsequence can identify the product composition, commercialparameters,
33、and physical characteristics of extruded product. Aspace shall be used as a separator between the specificationnumber and the type designation. No separators are neededbetween type, class, and grade. When special notes are to beincluded, such information shall be preceded by a comma.Special toleranc
34、es shall be noted in parentheses following acomma after the specification.5. Physical Properties5.1 The physical property values listed within this specifi-cations tables are to be considered minimum specificationvalues. Any requirement for specific test data for a givenproduction lot shall be speci
35、fied at the time of order. Physicalproperties for products not yet included in Table S-PEI shall bespecified using Table 1 for extruded products.D7293 1236. Dimensions6.1 The type, class, and grade shall be further differentiatedbased on dimensional stability (elevated temperature excursiontest), Ta
36、ble S-PEI, and dimensional requirements, Tables A andB. Grade 1 and 2 products shall be produced within commer-cial tolerances and with the lowest stress levels for machinedparts as delineated in Tables A and B for compression-moldedand extruded products. The manner in which the tolerances areobtain
37、ed is not relevant. These shall be designated in eachcallout as referenced in 4.5.2.6.2 Tubular bar dimensions shall be supplied in the unfin-ished condition, unless otherwise specified at time of order,sufficient to finish to the nominal dimension ordered.6.3 The maximum allowable camber or bow or
38、both shall bewithin the limits referenced in Tables A and B.7. Workmanship, Finish, and Appearance7.1 AppearanceThe color of products shall be as pub-lished by the shapes manufacturer. They shall be uniform incolor throughout the thickness. Specific colors and colormatching only as agreed to by orde
39、r. In some cases, physicalproperties are affected by colors.7.2 FinishAll products shall be free of blisters, wrinkles,cracks, gouges, and defects that restrict commercial use of theproduct. Special surface finish shall be supplied only whenspecified in the purchase order or contract.7.3 DefectsAll
40、products shall be free of voids, dirt,foreign material, and embedded particles exceeding132-in.(0.8-mm) maximum diameter as defined in 7.3.1.7.3.1 The criteria for determining the internal cleanlinessshall be external visual inspection. A maximum number of twointernal defects per square foot of plat
41、e/sheet and 1-ft (0.3-m)length of rod and tubular bar. Clusters of defects less than132-in. (0.8-mm) diameter shall be counted as a single defect.8. Sampling8.1 Sampling shall be statistically adequate to satisfy therequirements of this specification as applicable.8.2 For purposes of sampling, an in
42、spection lot for exami-nation and tests shall consist of all material of the same type,class, grade, and nominal size submitted for inspection at onetime.9. Number of Tests9.1 Routine lot inspection shall consist of all the criteriaspecified in the applicable product tables.9.2 The criteria listed i
43、n these product tables and definitionsare sufficient to establish conformity of the sheet, plate, rod, ortubular bars to this specification. When the number of testspecimens is not stated in the specification, a single determi-nation shall be made. If more than single determinations andseparate port
44、ions of the same sample are made, the results shallbe averaged. The final result shall conform to the requirementsprescribed in this specification.10. Test Conditions PEI10.1 Conditioning of SpecimensThe specification valuesand dimensions are based on Practice D618, Procedure A.10.2 Standard Tempera
45、tureThe tests shall be conducted atthe standard laboratory temperature of 73.4 6 3.6F (23 62C) and 50 6 10 % relative humidity (RH).11. Test Methods11.1 Tensile strength at break, elongation at break, andtensile modulus (tangent) in accordance with Test MethodD638, at the rate of 0.2 in./min:11.1.1
46、All plate and sheet specimens in accordance withTest Method D638, Type I.11.1.2 All rod specimens in accordance with Test MethodD638.11.1.3 All tubular bar specimens in accordance with TestMethod D638.11.2 Dimensional Stability:11.2.1 Specimen Preparation (a minimum of three testsamples required).11
47、.2.1.1 Rods and Tubular BarEach specimen shall beprepared by cutting a 1.5-in. (4-cm) long slice from the shapeto be tested. The slice shall then be machined using a coolantand good machining practices to a length of 1.000 6 0.005 in.(2.54 6 0.013 cm). Each end of the specimen shall have amachined s
48、urface.11.2.1.2 Plate and SheetThis test is not applicable to sheetunder316 in. (0.48 mm) thick. Each specimen shall consist ofa 2-in. (5-cm) diameter disk machined from the flat (diametershall equal test specimen thickness with a minimum of 2.0 in.(5 cm). The same care shall be used in the machinin
49、g asdescribed in 11.2.1.1. The thickness of the specimen shall bethat of the original flat from which it was cut, no machiningbeing done on the top or bottom faces.11.2.2 Testing ProcedureThe outside diameter and thick-ness or length of the specimen as applicable shall be measuredat 73.4 6 1.8F (23 6 1C) to the nearest 0.0001 in. (0.000254cm).All measurements shall be done on the center line and 90fro
