1、Designation: D 6261 98 (Reapproved 2003)Standard Specification forExtruded and Compression Molded Basic Shapes Madefrom Thermoplastic Polyester (TPES)1This standard is issued under the fixed designation D 6261; the number immediately following the designation indicates the year oforiginal adoption o
2、r, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis specification is intended to be a means of calling out mechanical grade
3、plastic product used inthe fabrication of end items or parts.1. Scope1.1 This specification covers requirements and test methodsfor the material, dimensions, and workmanship, and the prop-erties of extruded and compression molded plate, rod andtubular bar manufactured from thermoplastic polyester.1.
4、2 The properties included in this specification are thoserequired for the compositions covered Requirements necessaryto identify particular characteristics important to specializedapplications may be described by using the classificationsystem given in Section 4.1.3 This specification allows the use
5、 of recycled plastics2(see Section 4).1.4 The values are stated in inch-pound units and areregarded as the standard in all property and dimensional tables.For reference purposes, SI units are also included in Table 1and Table S-TPES only.1.5 The following precautionary caveat pertains only to thetes
6、t method portions sections of this specification. This stan-dard does not purport to address all of the safety concerns, ifany, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulat
7、ory limita-tions prior to use.NOTE 1There is no similar or equivalent ISO Standard.2. Referenced Documents2.1 ASTM Standards:D 256 Test Method for Determining the Pendulum ImpactResistance of Notched Specimens of Plastics3D 618 Practice for Conditioning Plastics for Testing3D 638 Test Method for Ten
8、sile Properties of Plastics3D 790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Materials3D 883 Terminology Relating to Plastics3D 3892 Practice for Packaging/Packing of Plastics4D 4507 Specification for Thermoplastic Polyester (TPES)Unfilled and Reinforc
9、ed Material4D 4000 Classification System for Specifying Plastics Mate-rials4D 5033 Guide for the Development of Standards Relating tothe Proper Use of Recycled Plastics5D 5927 Specification for Thermoplastic Polyester (TPES)Injection and Extrusion Materials Based on ISO TestMethods42.2 ANSI Standard
10、:Z1.4-1993 Sampling Procedures and Tables for Inspectionby Attributes63. Terminology3.1 Definitions:3.1.1 For definitions of other technical terms pertaining toplastics used in this specification, see Terminology D 883 orGuide D 5033.3.2 Definitions of Terms Specific to This Standard:3.2.1 plate, nf
11、lat stock14 in. 6.4 mm or greater.3.2.2 recycled-plastic shape, na product made from up to100 % recycled plastic.3.2.3 rod, nan extruded solid cylindrical shape with aminimum diameter of18 in. 3.2 mm.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct res
12、ponsibility of Subcommittee D20.20 on Plastic Products(Section D20.20.02).Current edition approved March 10, 2003. Published May 2003. Originallyapproved in 1998. Last previous edition approved in 1998 as D 6261 - 98.2As defined in Guide D 5033.3Annual Book of ASTM Standards, Vol 08.01.4Annual Book
13、of ASTM Standards, Vol 08.02.5Annual Book of ASTM Standards, Vol 08.03.6Available from American National Standards Institute, 11 W. 42nd St., 13thFloor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2.4 tubular
14、 bar, nan extruded annular shape with mini-mum inside diameter of38 in. 9.6 mm and minimum wallthickness of116 in. 1.6 mm.4. Classification and Material4.1 Product shape and size as defined in the applicablepurchase order.4.2 This specification covers product extruded and compres-sion molded as list
15、ed in Table S-TPES. Products included inthe designations reference Specification D 4507 or Specifica-tion D 5927 callouts where applicable.4.2.1 The type of thermoplastic polyester shape productmay be categorized by type, grade and class depending on resinand filler compositions as defined in Table
16、S-TPES.4.2.2 Each type of thermoplastic polyester shape may becategorized into one of several grades as follows:4.2.2.1 Grade 1General PurposeExtruded or compres-sion molded product made using only 100 % virgin thermo-plastic polyester resin.4.2.2.2 Grade 2RecycledExtruded or compressionmolded produ
17、ct made using any amount up to 100 % recycledthermoplastic polyester plastics.4.3 The type, class and grade is further differentiated basedon dimensional stability (elevated temperature excursion test),Table S-TPES, and dimensional requirements, Tables A and B.4.4 Property Tables:4.4.1 Table S-TPES
18、may be used to describe both extrudedor compression molded products.4.4.2 Table 1 may also be used to describe extruded orcompression molded products not included in Table S-TPESvia a cell callout that includes the applicable Table S-TPESthermoplastic polyester type and specific properties (Designa-
19、tions 1 through 7).4.4.3 To facilitate the incorporation of future or specialmaterials not covered by the Table S-TPES, the “as specified”category (00) for type, class and grade is shown in the tablewith the basic properties to be obtained from Table 1, as theyapply.4.4.4 Reinforcements and Additive
20、 MaterialsA symbol(single-letter) will be used for the major reinforcement orcombination, or both, along with two numbers that indicate thepercentage of addition by mass with the tolerances as tabulatedbelow. This must be included in all Table 1 callouts.Symbol MaterialTolerance(Based on the Total M
21、ass)C Carbon and graphite fiberreinforced6 2%G Glass-reinforced15 % glass content 6 3%L Lubricants (for example,PTFE, graphite andsiliconeby agreement between the supplierand the userM Mineral 6 2%R Combinations of rein-forcements or fillers, orboth6 3 % for the total reinforcement4.5 Callout Design
22、ationA one-line system shall be usedto specify thermoplastic polyester materials covered by thisspecification. The system uses pre-defined cells to refer tospecific aspects of this specification as illustrated below:4.5.1 Examples:4.5.1.1 Example 1Product made from general purposePBTCELL CALLOUT: S-
23、TPES0111S-TPES01 = Product made from PBT in accordance with TableS-TPES1 = Unfilled class1 = General purpose grade product4.5.1.2 Example 2Product made from general purposePETCELL CALLOUT: S-TPES0211S-TPES02 = Product made from PET in accordance with TableS-TPES1 = Unfilled class1 = General purpose
24、grade product4.5.2 These two examples illustrate how a one-line, alpha-numeric sequence can identify the product composition, com-mercial parameters and physical characteristics of extruded orcompression molded product. A space must be used as aseparator between the specification number and the type
25、designation. No separators are needed between type, class andgrade. When special notes are to be included, such informationshould be preceded by a comma. Special tolerances must benoted at time of order and are inserted after the grade inparentheses and preceded by a comma.5. Ordering Information5.1
26、 All shapes covered by this specification shall be orderedusing the proper callout designation (see 4.5).6. Physical Property Requirements6.1 The physical property values listed within this specifi-cations tables are to be considered minimum specificationvalues. Any requirement for specific test dat
27、a for a givenproduction lot should be specified at the time of order. Physicalproperties for products not yet included in Table S-TPES maybe specified using Table 1 for extruded or compression moldedproducts.7. Dimensional Requirements7.1 The type, class and grade is differentiated based ondimension
28、al stability (elevated temperature excursion test), asindicated in Table S-TPES.7.2 Products shall be produced within commercial toler-ances and with the lowest stress levels for machined parts asdelineated in Tables A and B.7.3 Tubular bar dimensions shall be supplied in the unfin-ished condition,
29、unless otherwise specified at time of order,sufficient to finish to the nominal dimension ordered.7.4 The maximum allowable camber or bow or both, shallbe within the limits referenced in Tables A and B.8. Workmanship, Finish and Appearance8.1 AppearanceThe resin material color is white to off-white.
30、 The product color shall be as published by the shapesmanufacturer. They shall be uniform in color throughout thethickness. Specific colors and color matching only as agreed toby order. Physical properties may be affected by other colors.D 6261 98 (2003)28.2 FinishAll products shall be free of blist
31、ers, 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.8.3 DefectsAll products shall be free of voids, dirt,foreign material and embedded particles exceeding132 in. 0.8mm maxim
32、um diameter as defined in 8.3.1.8.3.1 The criteria for determining the internal cleanlinessshall be external visual inspection. A maximum number of twointernal defects per square foot of plate and one foot length ofrod and tubular bar are allowed. Clusters of defects less than132 in. 0.8 mm diameter
33、 are to be counted as a single defect.9. Sampling9.1 Sampling shall be statistically adequate to satisfy therequirements of this specification as applicable (see ANSIZ1.4-1993).9.2 For purposes of sampling, an inspection lot for exami-nation and tests shall consist of all material of the same type,c
34、lass, grade and nominal size submitted for inspection at onetime.10. Number of Tests10.1 Routine lot inspection shall consist of all the criteriaspecified in the applicable product tables.10.2 The criteria listed in these product tables and defini-tions are sufficient to establish conformity of the
35、sheet, plate,rod or tubular bars to this specification. When the number oftest specimens is not stated in the test method, a singledetermination may be made. If more than single determinationsand separate portions of the same sample are made, the resultsshall be averaged. The final result shall conf
36、orm to therequirements prescribed in this specification.11. Test Conditions11.1 Conditioning of SpecimensThe specification valuesand dimensions are based on conditioning techniques outlinedin Procedure A of Practice D 618.11.2 Standard TemperatureThe tests shall be conducted atthe standard laborator
37、y temperature of 73.4 6 3.6F 23 62C and 50 6 5 % relative humidity.12. Test Methods12.1 Tensile stress break, elongation at break, and tensilemodulus (tangent) are in accordance with Test Method D 638,at the rate of 0.2 in. 5 mm/min.12.1.1 All plate specimens are in accordance with TestMethod D 638,
38、 Type I.12.1.2 All rod specimens are in accordance with TestMethod D 638.12.1.3 All tubular bar specimens are in accordance with TestMethod D 638.12.2 Dimensional Stability:12.2.1 Specimen Preparation (a Minimum of Three TestSamples Required):12.2.1.1 Rods and Tubular BarPrepare each specimen bycutt
39、ing a 1.5 in. 35 mm long slice from the shape to be tested.Machine the slice using a coolant and good machining prac-tices to a length of 1000 6 0.005 in. 25 6 0.13 mm. Each endof the specimen shall have a machined surface.12.2.1.2 PlateEach specimen shall consist of a 2 in. 50mm diameter disc machi
40、ned from the flat (diameter shall equaltest specimen thickness with a minimum of 2.0 in. 50 mm).The same care shall be used in the machining as described in12.1.1. The thickness of the specimen shall be that of theoriginal flat from which it was cut, no machining being done onthe top or bottom faces
41、.12.2.2 Testing ProcedureMeasure the outside diameterand thickness or length of the specimen as applicable at 73.4 61.8F 23 6 1C to the nearest 0.0001 in. 0.0025 mm. Allmeasurements shall be done on the centerline and 90 from thecenter line for plate. Also take measurements for thicknesshalfway to c
42、enter, and for diameter at mid-point. Place thespecimen in a bath consisting of polyalkylene glycol or an aircirculating oven heated to the temperatures shown below. After6 hrs, allow the specimen to slowly cool to room temperatureat a rate not to exceed 40F 22C/h. Measure the specimen at73.4 6 1.8F
43、 23 6 1C and calculate the percent change ineach dimension:300 6 5F 149 6 3C# (1)12.2.3 ReproducibilityInter-laboratory reproducibility isbeing determined and will be added within one year. PrecisionStatement will be finalized and included within two years.12.3 Lengthwise Camber and Widthwise Bow:12
44、.3.1 Make all measurements for camber and bow usingthe maximum distance rod, sheet or plate deviates from thestraight line extended from edge to edge when measured inaccordance with 12.3.2. The shape shall be oriented such thatthe weight of the product doesnt influence the results.12.3.2 Rod and Pla
45、te:12.3.2.1 RodLay each rod on its side and measure it withconcave side facing a straight edge. Measure camber from thestraight edge to the maximum concave point on the rod.Camber may not exceed the values of Table A.12.3.2.2 PlatePlate shall not exceed the requirements ofTable B on the lengthwise e
46、nds and widthwise edges when laidon a flat surface (crown side up).12.3.3 ReproducibilityInter-laboratory reproducibility isbeing determined and will be added within one year. Precisionstatement will be finalized and included within two years.12.4 Squareness (Based ona4ftNominal Length):12.4.1 Measu
47、re and compare diagonal lengths (corner tocorner). Accept the product if the difference is116 in. 0.4 mmor less and the measured minimums diagonal meets thefollowing requirements12.4.1.1 1 ft wide is 49-12 in. 125.5 cm minimum.12.4.1.2 2 ft wide is 53-34 in. 136.5 cm minimum.12.4.1.3 4 ft wide is 68
48、 in. 1463.0 cm minimum.12.4.2 If the diagonal difference exceeds116 in. 0.4 mm,proceed to measure the gap (which is the deviation froma2ftsquare). The maximum allowable gap shall not exceed18 in.0.7 mm except for the 1 ft 25.4 cm wide sizes of sheet andplate which should not exceed116 in. 0.4 mm.12.
49、4.3 ReproducibilityInter-laboratory reproducibility isbeing determined and will be added within one year. Precisionstatement will be finalized and included within two years.D 6261 98 (2003)312.5 Flexural modulus are in accordance with Test MethodD 790, specimen14 in. 1.4 mm thick maximum, testing speed0.11 in. 2.9 mm/min.12.6 Izod impact, are in accordance with Test MethodD 256, Method A, Fig. 4, notched,14 in. 1.4 mm thickmaximum specimen.13. Certification13.1 When requested at
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1