1、Designation: D6712 17Standard Specification forUltra-High-Molecular-Weight Polyethylene (UHMW-PE) SolidPlastic Shapes1This standard is issued under the fixed designation D6712; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the ye
2、ar 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 defining Ultra-High-Molecular-Weight2Polyethylene(UHMW-PE) solid
3、 plastic shapes for commercial use.1. Scope*1.1 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 f
4、rommolded samples or fabricated from sheet, rod and profiles.Requirements necessary to identify particular characteristicsimportant to specialized applications are described by using theclassification system given in Section 4.1.3 This specification allows for the use of recycled plastics(as defined
5、 in Guide D5033).1.4 The values are stated in SI units and are to be regardedas the standard in all property tables. For reference purposes,English units are also included in Table S-UHMW-PE andTable A and are not necessarily exact equivalents.1.5 The following precautionary caveat pertains only to
6、thetest method portions of this specification. 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 r
7、equirementsprior to use.NOTE 1There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:3D618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms
8、 Relating to Plas-ticsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD4020 Specification for Ultra-High-Molecular-Weight Poly-ethylene Molding and Extrusion MaterialsD5033 Guide for Development ofASTM Standards Relatingto Recycling and Us
9、e of Recycled Plastics (Withdrawn2007)42.2 ISO Standard:ISO 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 toplasti
10、cs used in this specification, see Terminology D883,D1600, or Guide D5033.3.2 Definitions of Terms Specific to This Standard:3.2.1 additive, nany material added to the polymer such asprocessing aids, stabilizers, and colorants.1This specification is under the jurisdiction of ASTM Committee D20 onPla
11、stics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved March 1, 2017. Published March 2017. Originallyapproved in 2001. Last previous edition approved in 2009 as D6712 - 01(2009).DOI: 10.1520/D6712-17.2Ultra High Molecular Weight refers to a
12、polyethylene resin meeting therequirements of Specification D4020.3For 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 Document Summary page onthe ASTM web
13、site.4The last approved version of this historical standard is referenced onwww.astm.org.*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 d
14、eveloped in accordance with internationally recognized 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.13.2.2 recycled-
15、plastic shape, na product made from up to100 % post-consumer material.3.2.3 regrind (plastic), na product or scrap 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
16、 stock greater than 10 mils thickness.3.2.6 solid plastic shape, na product of various geom-etries made up of UHMW-PE, such as sheet, rod, and so forth.TABLE S-UHMW-PE Physical Property Requirements for Ultra High Molecular Weight Polyethylene Solid Plastic ShapesDescription Type Class Description G
17、radeApplicableSpecificationCalloutDescriptionIzod impact, TestMethodfor D4020,min,kJ/m2(ft-lbs/in.2)Elongational Stress,Test Method forISO 11542-2 (Annex 1),min, MpaTensile Elongation,Test Method forD638,% at break, minUHMW-PE 01 1 unfilled 1 ASTM D4020 General purpose 37 (18) 0.20 2002 see Table A
18、Recycled . . . . . . . . .00 as specified 1 see Table A General purpose . . . . . . . . .2 see Table A Recycled . . . . . . . . .0OtherUHMW-PE00 0 . 0 . . . . .4. Classification and Material4.1 Product shape and size as defined in the applicablepurchase order.4.2 This standard covers product as list
19、ed in TableS-UHMW-PE.4.2.1 The type of a UHMW-PE product is categorized bygrade and type depending on resin and additives present, asdefined in Table S-UHMW-PE.4.2.2 Every type of UHMW-PE solid plastic shape arecategorized into one of two grades as follows:4.2.2.1 Grade l: General Purpose (Virgin) U
20、HMW-PEUHMW-PE solid plastic shapes are made using only 100 %virgin UHMW polyethylene resin which meets the require-ments of Specification D4020. Virgin product shall not containmaterials of unknown origin or composition.NOTE 2If appropriate, the resin can contain additives, such asprocessing aids, s
21、tabilizers, and colorants.4.2.2.2 Grade 2: Recycled/Regrind UHMW-PEUHMW-PE solid plastic shapes are made using any amount upto 100 percent of recycled, or regrind UHMW-PE plastic, orboth.TABLE A Additional Requirements for UHMW-PE Solid Plastic ShapesNOTE 1The values listed in Table A are minimum va
22、lues.DesignationOrderNumberProperty 0 1 91 Izod impact, Test Methodfor D4020,minKJ/m2(ft-lbs/in.2)Unspecified 30 (14) Specifyvalue2 Elongational stress, TestMethod for ISO 11542-2(Annex 1), min, MPaUnspecified 0.20 Specifyvalue3 Elongation at break, TestMethod for D638,%,minUnspecified 200 Specifyva
23、lue4 To be determined . . . . . . . . .4.3 Property Tables:4.3.1 Table S-UHMW-PE is to be used to 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
24、the tablewith the basic properties to be obtained from Table S-UHMW-PE, as they apply.4.4 Callout DesignationAone-line system shall be used tospecify polyethylene materials covered by this specification.4.4.1 The system uses pre-defined cells to refer to specificaspects of this specification as illu
25、strated below in Examples13:4.4.2 Example 1Product made from virgin TypeUHMW-PE resin.CELL CALLOUT: S-UHMW-PE0111where:S-UHMW-PE01 = product made from general purpose resinper Table S-UHMW-PE,1 = unfilled class, and1 = general purpose.4.4.3 Example 2Product made using virgin resin, orregrind/recycle
26、d UHMW-PE, or both, with an Izod impact 30kJ/m2(14 ft-lb/m2), minimum and elongation at break morethan 200 %.CELL CALLOUT: S-UHMW-PE0112A101where:S-UHMW-PE01 = product made from general purpose resinper Table S-UHMW-PE,1 = unfilled class,FIG. 1 Callout Designation LayoutD6712 1722 = product made usi
27、ng 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.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
28、/m2(50)ft-lb/in.2.CELL CALLOUT: S-UHMW-PE0101A911PX105where:S-UHMW-PE01 = product made from virgin resin per TableS-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 = D4020 suffix P, and105 = 105
29、 kJ/m2(50 ft-lb/in.2) (for 9 above).4.4.5 The three examples illustrate how a one-line, alpha-numeric 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 sp
30、ecifications tables are to beconsidered minimum values. If specific test data is required fora given production lot, it shall be specified at the time of order.All physical property data listed in Table S-UHMW-PE shallbe provided by the supplier of the solid plastic shapes ondemand. Physical propert
31、y data for products not yet included inTable S-UHMW-PE is to be specified using Table A forUHMW-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
32、ordered.7. Workmanship, Finish, and Appearance7.1 AppearanceThe color of products shall be as pub-lished by the manufacturer, within commercial tolerances.They shall be uniform in color throughout the thickness. Ifrequired, specific colors and color matching shall be agreed toby order.NOTE 3Physical
33、 properties may be affected by colors.7.2 FinishAll products shall have a finish consistent withcurrent manufacturing 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 de
34、finitionsare sufficient to establish conformity of the sheet to thisspecification. When the number of test specimens is not statedin the test method, a single determination is acceptable. If morethan single determinations and separate portions of the samesample are made, the results shall be average
35、d. The final resultshall conform to the requirements prescribed in this specifica-tion.10. Test Conditions10.1 Conditioning of SpecimensThe specification valuesand dimensions are based on conditioning techniques outlinedin Practice D618 Procedure A.10.2 Testing of SpecimensThe tests shall be conduct
36、ed atthe standard laboratory conditions at (23C 6 2C).11. Test Methods11.1 Elongation at break per Test Method D638, at the rateof 2.0 in./min 6 10 %.11.2 Izod impact per Specification D4020,14-in. thickspecimen.11.3 Elongational stress per ISO 11542-2.12. Certification12.1 When requested at the tim
37、e of order, the purchasershall be furnished a certification that the lot is made fromUHMW-PE plastic and meets the requirements of this stan-dard.13. Packing, Packaging and Marking13.1 All packing, packaging, and marking provisions ofPractice D3892 shall apply to this specification.14. Ordering Info
38、rmation14.1 All solid plastic shapes that are covered by thisstandard shall be ordered using the proper callout designation(see 4.4).15. Keywords15.1 recycled UHMW-PE; reprocessed UHMW-PE; sheetUHMW-PED6712 173SUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to this st
39、andard since the last issue(D6712 - 01(2009) that may impact the use of this standard. (March 1, 2017)(1) Removal of permissive language and minor editorialchanges.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this
40、standard. Users of this standard are expressly advised that determination of 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 r
41、eviewed every five years andif not revised, either reapproved or withdrawn. Your 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 therespon
42、sible technical committee, which you may attend. If you feel that your comments 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
43、 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 174
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