1、Designation: D3965 16Standard Classification System and Basis for Specifications forRigid Acrylonitrile-Butadiene-Styrene (ABS) Materials forPipe and Fittings1This standard is issued under the fixed designation D3965; the number immediately following the designation indicates the year oforiginal ado
2、ption or, in the case 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.1. Scope*1.1 This classification system covers materials made fromonly virgin ABS p
3、olymers and blends of ABS polymerssuitable for use in the extrusion of pipe and molding of fittings.1.2 The requirements of this classification system are appli-cable only to the ABS polymers and blends of ABS polymersas classified and do not address the requirements of the finishedpipe or fittings.
4、 The applicable ASTM standard specificationfor pipe or fittings shall be consulted for their requirements.1.3 This classification system excludes ABS polymers andblends of ABS polymers made from reprocessed, regrind,reclaimed, or recycled materials. ABS rework, generated in-house by the original pla
5、stic manufacturer, is allowed to beused by that original manufacturer, provided the ABS productshipped meets the physical and mechanical properties requiredby its callout in Table 1.1.4 This classification system and subsequent line callout(specification) provides a means for describing ABS material
6、sused in the manufacture of pipe and fittings. It is not intendedfor the selection of materials. Material selection shall be madeby those having expertise in the plastics field after carefulconsideration of the design and the performance required of thepart, the environment to which it will be expos
7、ed, the fabrica-tion process to be employed, the inherent properties of thematerial other than those covered by this classification system,and the economics.1.5 This classification system and subsequent line callout(specification) provides for the classification of ABS polymersand blends of ABS poly
8、mers into groups based on fiveproperties: Izod impact strength at room temperature, Izodimpact strength at low temperature, deflection temperatureunder load, tensile stress at yield point, and modulus ofelasticity in tension. The properties included are those requiredto identify the ABS material by
9、the cell classifications.NOTE 1Other requirements necessary to identify particular character-istics of ABS polymers and blends of ABS polymers will be added as testmethods become available or the need is identified.NOTE 2Due to pipe and fitting standards requirements a separatestandard is planned fo
10、r recycled materials.1.6 The values stated in SI units are to be regarded asstandard. The values given in parentheses are for informationonly.1.7 The following safety hazards caveat pertains only to thetest methods portion, Section 13, of this classification system:This standard does not purport to
11、address all of the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.NOTE 3This standard and ISO 7245-1984 address the same su
12、bjectmatter, but differ in technical content.2. Referenced Documents2.1 ASTM Standards:2D256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflectio
13、n Temperature of PlasticsUnder Flexural Load in the Edgewise PositionD792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3641 Practice for Injection Molding
14、 Test Specimens ofThermoplastic Molding and Extrusion MaterialsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD5947 Test Methods for Physical Dimensions of SolidPlastics Specimens1This classification system is under the jurisdiction ofAST
15、M Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Sept. 1, 2016. Published September 2016. Originallyapproved in 1980. Last previous edition approved in 2011 as D3965 - 11. DOI:10.1520/D3965-16.2For referenced ASTM s
16、tandards, 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 website.*A Summary of Changes section appears at the end of this standardCopyright ASTM Int
17、ernational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsF412 Terminology Relating to Plastic Piping Systems2.2 ISO Standard:ISO 7245-1984 Pipes and Fittings of Ac
18、rylonitrile-Butadiene-Styrene (ABS)General Specification forMoulding and Extrusion Materials33. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nologies D883 and F412 and abbreviations are in accordancewith Terminology D1600, unless otherwise indicated. Theabbreviation for acrylon
19、itrile-butadienestyrene plastic is ABS.3.2 Definitions of Terms Specific to This Standard:3.2.1 blenda homogenous mixture of polymers preparedby melt compounding or physical combination.3.2.2 lota unit of manufacture; can consist of a blend oftwo or more production runs or batches of material.3.2.3
20、natural materiala polymer as it exists when initiallymade by the original producer without addition of colorants.3.2.4 reprocessed plastica thermoplastic prepared fromusually melt-processed scrap or reject parts by a plasticsprocessor or from purchased nonstandard or nonuniform virginmaterial.3.2.5
21、original plastic manufacturera company that pro-duces ABS resin by polymerization of monomers or com-pounding of virgin styrene-acrylonitrile plastic (SAN) andvirgin polybutadiene rubber, which meets the requirements ofthis classification system.4. Classification4.1 ABS polymers and blends of ABS po
22、lymers shall beclassified in accordance with Table 1. Each ABS polymer andblend of ABS polymers is given a five-digit cell classificationrepresenting the physical properties in the order in which theyare listed in Table 1.NOTE 4The manner in which selected materials are identified by thisclassificat
23、ion system is illustrated by an ABS Class 44222 material havingthe following requirements:4.2 Although the values listed are necessary to include therange of properties available in existing materials, users shallnot infer that every possible combination of the propertiesexists or can be obtained.4.
24、3 Mechanical properties of pigmented or colored materi-als can differ from the mechanical properties of naturalmaterial, depending on the choice of colorants and the concen-tration. The main property affected is ductility, as illustrated bya reduction in Izod impact strength and tensile elongationva
25、lues. ABS polymers and blends of ABS polymers containingcolorants or color concentrates, or both, shall meet the mini-mum ABS material cell classification from Table 1 for the pipeand fitting products specified.5. Materials and Manufacture5.1 The ABS material shall be produced by polymerizationof th
26、e monomers, acrylonitrile, butadiene, and styrene, or theirclosely related chemical derivatives, or from a blend of ABS3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.TABLE 1 Physical Property Requirements for ABS Pipe an
27、d Fitting MaterialsNOTE 1The minimum property value for any material will determine the cell number although the maximum expected value may fall within the nexthigher cell.ASTMTest MethodCell Limits012345Izod impact, min: D256, Test Method A, Cantile-ver Beam (Izod-Type) Testat 23C (73F), J/mA110 16
28、0 210 320 430(ft-lbf/in. of notch)A(2) (3) (4) (6) (8)at 30C (22F), J/mA50 110 160 210 270(ft-lbf/in. of notch)A(1) (2) (3) (4) (5)Deflection temperature under load,min, 1.82 MPa, (264 psi)annealed, 3.18 mm (0.125 in.)thickness:D648CA76 82 88 93 99(F)A(170) (180) (190) (200) (210)Tensile stress at y
29、ield point, min: D638MPaA24 31 38 45 52(psi)A(3500) (4500) (5500) (6500) (7500)Modulus of elasticity in tension,min:D638MPaA1380 1650 1930 2210 2480(psi)A(200 000) (240 000) (280 000) (320 000) (360 000)AUnspecified.D3965 162polymers from those monomers. The blend of ABS polymerscan be intimately mi
30、xed by melt compounding, or it can be ahomogenous physical mixture of discrete ABS polymers.5.2 TheABS polymer and eachABS polymer component ofa blend shall be uniform in physical properties, as defined by acell classification, and shall be of composition, size, and shapeas specified by its product
31、specification or purchase order orcontract. The color of the ABS plastic material with addedcolorants shall be as required in the product specification.5.3 The ABS material shall contain a minimum of 15 %acrylonitrile, 6 % butadiene, and 15 % styrene, or 15 % of acombination of styrene and substitut
32、ed styrene. Additive(s)necessary for compounding, impact modification, and coloringare allowed. The final composition of the ABS material shallmeet the minimum ABS cell class from Table 1 for the productspecified.6. Suffix Requirements6.1 When additional requirements are needed that are notcovered b
33、y the basic requirements or cell-table requirements,they shall be indicated through the use of suffixes.6.2 A list of suffixes can be found in Classification SystemD4000 (Table 33) and are to be used for additional require-ments as appropriate. Additional suffixes will be added to thatstandard as te
34、st methods and requirements are developed andrequested.7. Basic Requirements7.1 Basic requirements from Table 1 are always in effectunless these requirements are superseded by specific suffixrequirements, which always take precedence.8. Detail Requirements8.1 The material shall conform to the requir
35、ements in Table1 and suffix requirements as they apply.8.2 For purposes of determining conformance, all specifiedlimits for a specification (line callout) based on this classifica-tion system are absolute limits, as defined in Practice E29.8.2.1 With the absolute method, an observed value or acalcul
36、ated value is not rounded, but is to be compared directlywith the limiting value. Conformance or nonconformance isbased on this comparison.9. Sampling9.1 Sampling shall be statistically adequate to satisfy therequirements of 14.3.9.2 A batch or lot is construed as a unit of manufacture asprepared fo
37、r shipment and can consist of a blend of two ormore “production runs.”10. Number of Tests and Retests10.1 One set of specimens as prescribed in the test methodsshall be considered sufficient for each lot. The average resultfor the specimens tested shall meet the requirements of Table 1when tested in
38、 accordance with the test methods listed inSection 13.11. Specimen Preparation11.1 The test specimens shall be injection molded in accor-dance with Practice D3641 with melt temperature 215 6 15Cand mold temperature 40 6 15C. Average injection velocityshall be 200 6 100 mm/s as defined by the followi
39、ng formula:AIV 5 d2Va/4 ns (1)where:AIV = average injection velocity, mm/s,d = screw diameter, mm,Va= screw advance speed, mm/s,n = number of mold cavities, ands = cross-sectional area of the test specimen, mm2.Other molding conditions shall be as specified by themanufacturer. Test specimens shall b
40、e molded in one piece andshall not be a composite of thinner sections.12. Conditioning12.1 Anneal the molded test specimen for use with TestMethod D648 for a minimum of 16 h, but not more than 24 hat 85C for materials in Cells 1 through 3, and at 95C formaterials in Cells 4 and 5. Condition all othe
41、r molded testspecimens in accordance with Procedure A of Practice D618,prior to testing.12.2 Test ConditionsConduct tests in the standard labora-tory atmosphere of 23 6 2C and 50 6 10 % relative humidity,unless otherwise specified in Table 1.13. Test Methods13.1 All specimens shall be measured using
42、 techniques inTest Method D5947, where applicable.13.2 Impact TestingDetermine the impact strength of thematerial in accordance with the Cantilever Beam (Izod-Type)Test of Test Methods D256, employing a 3.18 6 0.38-mm(0.125 6 0.015-in.) thick specimen.13.3 Deflection Temperature Under LoadDetermine
43、thedeflection temperature under load, in accordance with TestMethod D648, employing a 3.18 by 12.7 by 127-mm (18 by12by 5-in.) specimen and a load of 1.82 MPa (264 psi).13.4 Tensile Stress at Yield PointDetermine the tensilestress at yield in accordance with Test Method D638, employ-ing a 3.2-mm (18
44、-in.) thick Type I specimen. Test the specimenat a speed of 5.1 to 6.4 mm (0.20 to 0.25 in.)/min.NOTE 5Most ABS plastics exhibit a true yield point. Tensile stress atyield generally is greater than tensile stress (nominal) at break.13.5 Modulus of Elasticity in TensionDetermine themodulus of elastic
45、ity in tension in accordance with TestMethod D638, employing the same specimen size and testspeed as for tensile stress indicated in 13.4.13.6 Specific GravityDetermine the specific gravity inaccordance with Test Method D792.14. Certification and Inspection14.1 Certification and inspection of the ma
46、terial suppliedunder this classification system shall be for conformance to therequirements specified herein.D3965 16314.2 Lot-acceptance inspection shall be the basis on whichacceptance or rejection of the lot is made. The lot-acceptanceinspection shall consist of those tests listed in Table 1.14.3
47、 Certification shall be that the material wasmanufactured, sampled, tested, and inspected in accordancewith this classification system, and that the average values forthe lot meet the requirements of the specification (line callout).NOTE 6The ASTM publication Manual on Presentation of Data andContro
48、l Chart Analysis, 8th Edition,4provides detailed information aboutstatistical process control.14.4 A report of test results shall be furnished when re-quested. The report shall consist of results of the lot-acceptanceinspection for the shipment.15. Packaging and Package Marking15.1 For packing, pack
49、aging, and marking, the provisions ofPractice D3892 apply.15.2 PackagingThe material shall be packaged in stan-dard commercial containers so constructed as to ensure accep-tance by common or other carriers for safe transportation at thelowest rate, to the point of delivery, unless otherwise specifiedin the contract or order.15.3 Package MarkingUnless otherwise agreed upon be-tween the seller and the purchaser, shipping containers shallidentify the material and its supplier, the batch or lot number,and the quantity contained.16. Keywords16.1
