1、Designation: D 6712 01Standard Specification forUltra-High-Molecular-Weight Polyethylene (UHMW-PE) SolidPlastic Shapes1This standard is issued under the fixed designation D 6712; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、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 defining Ultra-High-Molecular-Weight2Polyethylene(UHMW-PE) so
3、lid plastic shapes for commercial use.1. Scope1.1 This specification covers requirements and test methodsfor the material and properties of solid plastic shapes manu-factured from UHMW-PE.1.2 The properties included in this specification are thoserequired for the compositions covered and are derived
4、 frommolded samples or fabricated from sheet, rod and profiles.Requirements necessary to identify particular characteristicsimportant to specialized applications may be described byusing the classification system given in Section 4.1.3 This specification allows for the use of recycled plastics(as de
5、fined in Guide D 5033).1.4 The values are stated in SI units and are regarded as thestandard in all property tables. For reference purposes, Englishunits are also included in Table S-UHMW-PE and Table A.1.5 The following precautionary caveat pertains only to thetest method portions of this specifica
6、tion. This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory requirementsprior to use.NOTE 1There is no
7、 ISO equivalent standard.2. Referenced Documents2.1 ASTM Standards:D 618 Practice for Conditioning Plastics for Testing3D 638 Test Method for Tensile Properties of Plastics3D 883 Terminology Relating to Plastics3D 1600 Terminology for Abbreviated Terms Relating toPlastics3D 3892 Practice for Packagi
8、ng/Packing of Plastics4D 4000 Classification System for Specifying Plastic Mate-rials4D 4020 Specification for Ultra-High-Molecular-WeightPolyethylene Molding and Extrusion Materials4D 5033 Guide for Development of ASTM Standards Relat-ing to Recycling and Use of Recycled Plastic52.2 ISO Standard:IS
9、O 11542-2 Ultra-High-Molecular Weight Polyethylene(PE-UHMW) Moulding MaterialsPart 2: Preparation ofTest Specimens and Determination of Properties3. Terminology3.1 Definitions:3.1.1 For definitions of other technical terms pertaining toplastics used in this specification, see Terminology D 883,D 160
10、0, or Guide D 5033.3.2 Definitions of Terms Specific to This Standard:3.2.1 additive, nany material added to the polymer suchas processing aids, stabilizers, and colorants.3.2.2 recycled-plastic shape, na product made from up to100 % post-consumer material.3.2.3 regrind (plastic), na product or scra
11、p such as edgetrim that have been reclaimed by shredding and granulating foruse in-house.3.2.4 rod, nan extruded solid cylindrical shape with aminimum diameter of116 in.3.2.5 sheet, nflat stock greater than 10 mils thickness.3.2.6 solid plastic shape, na product of various geom-etries made up of UHM
12、W-PE, such as sheet, rod, and so forth.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.20 on Plastic Products(Section D20.20.02) .Current edition approved August 10, 2001. Published October 2001.2Ultra High Molecular
13、 Weight refers to a polyethylene resin meeting therequirements of Specification D 4020.3Annual Book of ASTM Standards, Vol 08.01.4Annual Book of ASTM Standards, Vol 08.02.5Annual Book of ASTM Standards, Vol 08.03.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, P
14、A 19428-2959, United States.TABLE S-UHMW-PE Physical Property Requirements for Ultra High Molecular Weight Polyethylene Solid Plastic ShapesDescription Type Class Description GradeApplicableSpecificationCalloutDescriptionIzod impact, Test Methodfor D 4020,min,kJ/m2(ft-lbs/in.2)Elongational Stress,Te
15、st Method forISO 11542-2 (Annex 1),min, MpaTensile Elongation,Test Method for D 638,% at break, minUHMW-PE 01 1 unfilled 1 ASTM D 4020 General purpose 37 (18) 0.20 2002 see Table A Recycled . . . . . . . . .00 as specified 1 see Table A General purpose . . . . . . . . .2 see Table A Recycled . . . .
16、 . . . . .0Other UHMW-PE 00 0 . . . 0 . . . . . . . . . . . . . . .4. Classification and Material4.1 Product shape and size as defined in the applicablepurchase order.4.2 This standard covers product as listed in TableS-UHMW-PE.4.2.1 The type of UHMW-PE product may be categorizedby grade and type de
17、pending on resin and additives present, asdefined in Table S-UHMW-PE.4.2.2 Every type of UHMW-PE solid plastic shape may becategorized into one of two grades as follows:4.2.2.1 Grade l: General Purpose (Virgin) UHMW-PEUHMW-PE solid plastic shapes are made using only 100 %virgin UHMW polyethylene res
18、in which meets the require-ments of Specification D 4020. If appropriate, the resin maycontain additives, such as processing aids, stabilizers andcolorants. Virgin product should not contain materials ofunknown origin or composition.4.2.2.2 Grade 2: Recycled/Regrind UHMW-PEUHMW-PE solid plastic shap
19、es are made using any amount upto 100 percent of recycled, or regrind UHMW-PE plastic, orboth.TABLE A Additional Requirements for UHMW-PE Solid PlasticShapesNOTEThe values listed in Table A are minimum values.DesignationOrderNumberProperty 0 1 91 Izod impact, Test Methodfor D 4020,minKJ/m2(ft-lbs/in
20、.2)Unspecified 30 (14) Specifyvalue2 Elongational stress, TestMethod for ISO 11542-2(Annex 1), min, MPaUnspecified 0.20 Specifyvalue3 Elongation at break, TestMethod for D 638,%,minUnspecified 200 Specifyvalue4 To be determined . . . . . . . . .4.3 Property Tables:4.3.1 Table S-UHMW-PE may be used t
21、o describeUHMW-PE solid plastic shapes.4.3.2 To facilitate the incorporation of future UHMW-PE orspecial UHMW-PE formulations not covered by Table A, the“as specified” category (00) for grade is shown on the tablewith the basic properties to be obtained from Table S-UHMW-PE, as they apply.4.4 Callou
22、t DesignationA one-line system shall be usedto specify polyethylene materials covered by this specification.4.4.1 The system uses pre-defined cells to refer to specificaspects of this specification as illustrated below in Examples13:4.4.2 Example 1Product made from virgin TypeUHMW-PE resin.CELL CALL
23、OUT: S-UHMW-PE0111where:S-UHMW-PE01 = product made from general purposeresin per Table S-UHMW-PE,1 = unfilled class, and1 = general purpose.4.4.3 Example 2Product made using virgin resin, orregrind/recycled UHMW-PE, or both, with an Izod impact 30kJ/m2(14 ft-lb/m2), minimum and elongation at break m
24、orethan 200 %.CELL CALLOUT: S-UHMW-PE0112A101where:S-UHMW-PE01 = product made from general purposeresin per Table S-UHMW-PE,1 = unfilled class,2 = product made using virgin resin, orreprocessed/recycled UHMW-PE, orboth, per Table S-UHMW-PE,A = Table A properties,1 = Izod impact, 30 kJ/m2(14 ft-lb/in
25、.2),min,0 = unspecified, and1 = elongation at break, 200 %, min.4.4.4 Example 3Product made using virgin UHMW-PEresin and having an Izod impact strength of 105 kJ/m2(50)ft-lb/in.2.CELL CALLOUT: S-UHMW-PE0101A911PX105where:FIG. 1 Callout Designation LayoutD6712012S-UHMW-PE01 = product made from virgi
26、n resin perTable S-UHMW-PE,0 = as specified,1 = general purpose,A = Table A properties,9 = specify value,1 = elongational stress $0.2 (MPa),1 = elongation at break, 200 %,PX = D 4020 suffix P, and105 = 105 kJ/m2(50 ft-lb/in.2) (for 9 above).4.4.5 The three examples illustrate how a one-line, alpha-n
27、umeric sequence can identify the product composition, com-mercial parameters and physical characteristics of UHMW-PEsheet and rod product.5. Physical Property Requirements5.1 The data listed within this specifications tables are to beconsidered minimum values. Any requirement for specific testdata f
28、or a given production lot should be specified at the timeof order. All physical property data listed in TableS-UHMW-PE shall be provided by the supplier of the solidplastic shapes on demand. Physical property data for productsnot yet included in Table S-UHMW-PE may be specified usingTable A for UHMW
29、-PE solid plastic shapes.6. Dimensional Requirements6.1 Products shall be supplied in the unfinished condition,unless otherwise specified at the time of order, sufficient tofinish to the nominal dimension ordered.7. Workmanship, Finish, and Appearance7.1 AppearanceThe color of products shall be as p
30、ub-lished by the manufacturer, within commercial tolerances.They shall be uniform in color throughout the thickness.Specific colors and color matching only as agreed to by order.Physical properties may be affected by colors.7.2 FinishAll products shall have a finish consistent withcurrent manufactur
31、ing processes.8. Sampling8.1 Sampling shall be statistically adequate to satisfy therequirements of this standard.9. Number of Tests9.1 The criteria listed in these product tables and definitionsare sufficient to establish conformity of the sheet to thisspecification. When the number of test specime
32、ns is not statedin the test method, single determination may be made. If morethan single determinations and separate portions of the samesample are made, the results shall be averaged. The final resultshall conform to the requirements prescribed in this specifica-tion.10. Test Conditions10.1 Conditi
33、oning of SpecimensThe specification valuesand dimensions are based on conditioning techniques outlinedin Practice D 618 Procedure A.10.2 Testing of SpecimensThe tests shall be conducted atthe standard laboratory conditions at (23C 6 2C).11. Test Methods11.1 Elongation at break per Test Method D 638,
34、 at the rateof 2.0 in./min 6 10 %.11.2 Izod impact per Specification D 4020,14-in. thickspecimen.11.3 Elongational stress per ISO 11542-2.12. Certification12.1 When requested at the time of order, the purchasershall be furnished a certification that the lot is made fromUHMW-PE plastic and meets the
35、requirements of this stan-dard.13. Packing, Packaging and Marking13.1 All packing, packaging, and marking provisions ofPractice D 3892 shall apply to this specification.14. Ordering Information14.1 All solid plastic shapes that are covered by thisstandard shall be ordered using the proper callout de
36、signation(see 4.4).15. Keywords15.1 recycled UHMW-PE; reprocessed UHMW-PE; sheetUHMW-PEASTM International takes no position respecting 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
37、the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard 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. Y
38、our comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your commen
39、ts have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.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).D6712013
