ASTM_D_530_-_81_1985_scan.pdf

ASTM D530 81 M 0757510 0038765 4=H-&c-/9 Designation:D 530-81(Reapproved 1985)Standard Methods of Testing HARD RUBBER PRODUCTS?This standard is issued under the fixed designation D 530:the number immediately following the designation indicates the year of original adoption of,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 ediforial change since the last revision or reapproval.These nieihods liave beeti approveby ageticies o f lie Deparinieni of Defitise i o replacemeihods 11221(part)and 11231(pari)of Federal Tesi Meiliod No.601 andfor fisrittg in the DoD Index o f Spec$caiions and Siandards.1.Scope 1.1 These methods cover procedures suitable for the measurement of chemical,mechanical,and electrical properties of hard rubber and sim-ilar hard,low-elongation,vulcanized materials.1.2 The values stated in SI u are to be regarded as the standard.1.3 T%is standard may involve hazardoils ma-terials,operations,and equipment.This standard does not purport to address all o f the safely prob-lems associated with its tue.It is the responsibil-ity o f whoever uses this standard to consitlt and establish appropriate safety and health pracices and determine the applicnbility o f regulatory Iiini-tations prior?to use.2.Applicable Documenfs 2.1 ASTM Standards:D 149 Test Methods for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commer-cial Power Frequencies?D 150 Test Methods for A-C Loss Character-istics and Permittivity(Dielectric Constant)of Solid Electrical Insulating Materials2 D256 Test Methods for Impact Resistance of Plastics and Electrical Insulating Materials2 D257 Test Methods for D-C Resistance or Conductance of Insulating Materials*D 297 Methods for Rubber Products-Chem-ical Analysis3 D570 Test?Method for Water Absorption of Plastics4 D618 Method for Conditioning Plastics and Electrical Insulating Materials for Testing?D 62 1 Test Methods for Deformation of Pias-tics Under Load4 D 790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials4 D2135 Classification of Hard Rubbers3 D2240 Test Method for Rubber Property-Durometer Hardness3 D2707 Test Method for Hard Rubber in Tension3 E 18 Test Methods for Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials6 3.Descriptions of Terms Specific to This Stand-ard 3.1 The term?hard rubber?as used in these methods shall be understood to denote the rigid,crosslinked polymeric products obtained by vu-canization of a diene rubber with sulfur under conditions sufficienf to cause chemical combi-nation of at least 15 parts sulfur per 100 parts hydrocarbon.3.2 The term?hard rubber compound?as used in these methods shall be understood to denote-a rigid,crosslinked polymer mixture con-sisting of hard rubber in essentially homogeneous admixfure with other materials,the hard rubber comprising the greater amount by mass of the polymeric portion of the mixture.?These methods are under the jurisdiction of ASTM Com-mittee D-I 1 on Rubber and are the direct responsibility of Subcommittee DI 1.10 on Physical Testing.-Current edition approved March 27,198 I.Published May I98 I,Originally published as D 530-39.Last previous edition D 530-68(1974).Atitiiral Book o f ASTM Siatidards,Vol 09.02.Atmiral Book o f ASTM Standards,Vol 09.01.Atinrrol Book o f ASTM Siatidards,Vol 08.01.Atiiiiiaf Book ofASThf Siatldards,Vol 10.01.6Anniial Book ofASTM Standards,Vol 03.01.125.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 D530 81 W 0759510 O038766 6 D 530 4.Significance and Use 4.1 This standard consists of a collection of test methods that may be used in the hard rubber industry.5.Interfaces 5.1 Classification of hard rubber products in terms of chemical,mechanical,and electrical properties is detailed in Classification D 2135.6.Sampling 6.1 The method of sampling shall be per-formed as agreed upon between customer and supplier.7.Chemical Composition 7.1 The chemical analysis of hard rubber,hard rubber compounds,or similar hard,low-elongation,vulcanized materials shall be made in accordance with the procedures described in Methods D 297.7.2 Chemical analysis in accordance with the recommended methods shall form a valid basis for categorizing a material for specification pur-poses.8.Meclianical Properties 8.1 Mechanical properties of hard rubber,hard rubber compounds,and similar hard,low-elongation,vulcanized materials shall be deter-mined in accordance with the following methods,modified as stated herein:NOTE i-Elaborate conditioning routines,such as those specified for come thermoplastic polymers and for lightly vulcanized soft rubber,are not necessary for hard rubber,which may be tested after conditioning only long enough to assure temperature equilibrium i