ASTM_D_1788_-_81_scan.pdf

ASTM DL788 43 I 0757530 0023233 2 I-Designation:D 1788-81 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard Specification for RIGID ACRYLONITRILE-BUTADIENE-STYRENE(ABS)PLASTICS?This standard is issued under the fixed designation D 1788;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(E)indicates an editorial change since the last revision or reapproval.1.Scope 1.1 This specification covers rigid thermo-plastic compositions which are made from polymers or blends of polymers,or both,produced from the monomers acrylonitrile,butadiene,and styrene(ABS)or their closely related chemical derivatives and which con-tain a minimum of 13%acrylonitrile,5%butadiene,and 15%styrene.ABS plastics may also contain a maximum of 10%of other monomeric or polymeric components.Other necessary compounding ingredients may also be present.These plastic compositions are suitable for injection or compression molding,calendering,and extrusion.1.2 The values stated in SI units are to be regarded as the standard.NOTE 1-This specification includes commer-cially available compounds meeting the composition requirements given herein and only those cell com-binations that are applicable thereto.Materials avail-able at the time of publication,listed by their cell classification,can be found in the appendix.Periodic updating of this listing w i l l be at the request of the seller.1.3 For pipe applications,other minimum composition requirements for acrylonitrile,bu-tadiene,and styrene apply.For example,see Specification D 1527.1.4 This specification provides for the di-vision of ABS polymers into groups based on three properties:Izod impact strength,deflec-tion temperature under load,and tensile stress at yield point.These three properties are the most significant in characterizing dif-ferences between ABS eompounds.NOTE 2-The properties included in this specifi-cation are those required to identify the types and grades of materials covered.There may be other requiremenfs necessary to identify particular char-acteristics.These will be added to the specification as their inclusion becomes generally desirable and the necessary test data and methods become avail-able.2.Applicable Documents 2.1 ASTM Standards:D 256 Tests for Impact Resistance of Pias-tics and Electrical Insulating Materials2 D 618 Conditioning Plastics and Electrical Insulating Materials for Testing3 D638 Test for Tensile Properties of Plas-tics4 D 648 Test for Deflection Temperature of Plastics Under Flexural Load4 D 792 Tests for Specific Gravity and Den-sity of Plastics by Displacement4 D883 Definitions of Terms Relating to Plastics5 D 1013 Test for Total Nitrogen in Resins and Plastics.6 D 1527 Specification for Acrylonitrile-Buta-diene-Styrene(ABS)Plastic Pipe,Sched-ules 40 and 807 D 1897 Recommended Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion Materials4 This specification is under the jurisdiction of ASTM Comfittee D-20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials.Materials defined in this specification are the basis of pipe and sheeting specifications which are under the juris-diction of Committee F-17 on Plastic Piping Systems and Subcommittee D20.19.Current edition approvedJune 26,1981.Published Octo-ber 1981.Originally published as D 1788-60 T.Last pre-vious edition D 1788-78a.?Annual Book of ASTMStandards,Parts 35.37,and 39.i Annual Book of ASTM Standards,Parts 22,35,and 39.Annual Book of ASTM Standards,Part 35.Annual Book of ASTM Standards,Parts 34,35,and 36.Annual Book of ASTM Standards,Part 28.?Annual Book of ASTM Standards,Part 34.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.ASTM DL788 83 M 0753530 0023232 4 H D 1898 Recommended Practice for Sampling D 3892 Practice for Packaging/Packing of 2.2 Military Standard MIL-STD-105 Sampling Proceduresand Ta-of Plastics4 Plastics4 bles for Inspection by Attributes 3,Classification 3.1 ABS compounds will be classified in accordance with Table 1.Type is based on Izod impact strength;grade is based on e-flection temperature under load;and class is determined by tensile stress at yield point.For each material there will be an identifying number made up of three digits using the cell numbers in the order of type,grade,and class.For example,a material falling into impact strength cell 1,deflection temperature under load cell 2,and tensile stress at yield point cell 1 would be called an ABS 1-2-1.The designations used in the previous issue of this document to identify compounds,are i