"This classification system tabulates the properties of vulcanized rubber materials (natural rubber@ reclaimed rubber@ synthetic rubbers@ alone or in combination) that are intended for@ but not limited to@ use in rubber products for automotive applications. NOTE 1 - The SAE Committe on Automotive Rubber Specifications (CARS) has the sole responsibility for SAE J200. CARS Works closely with and receives input from ASTM Subcommittee D11.30 on Classification of Rubber Compounds with the goal to keep SAE J200 and ASTM D 2000 technically equivalent. Candidate materials presented for development of new tables or for inclusion in Tables A1 or A2 of SAE J200 or Table X1.1 of ASTM D 2000 shall be initiated with the SAE CARS Committee. The procedure to be followed is detailed in Appendix C of SAE J200. NOTE 2 - This document may serve many of the needs of other industries in much the same manner as SAE numbered steels. It must be remembered@ however@ that this system is subject to revision when required by automotive needs. It is recommended that the latest revision always be used. This document is based on the premise that all rubber materials intended for use in rubber products can be arranged into characteristic designations. These designations are determined by types@ based on resistance to heat aging@ and classes@ based on resistance to swelling by oil. Basic levels are thus established which@ together with values describing additional requirements@ permit complete description of the quality of all rubber materials. In all cases where provisions of this document would conflict with those of the detailed specifications for a particular product@ the latter shall take precedence. NOTE 3 - When the rubber product is to be used for purposes where the requirements are too specific to be completely prescribed by this classification system@ it is necessary for the purchaser to consult the supplier in advance to establish the appropriate properties@ test methods@ and specification test limits. Purpose The purpose of this document is to provide guidance to the engineer in the selection of practical@ commercially available rubber materials@ and further to provide a method for specifying these materials by the use of a simple line call-out designation. This document was developed to permit the addition of descriptive values for future rubber materials without complete reorganization of the classification system and to facilitate the incorporation of future new methods of test to keep pace with changing industry requirements. Rationale Corrected Metric to English conversions for Tensile Strength in Basic Requirements Tables 6.DH@ 6.EE@ and 6.EH. This change makes these English reference values consistent with the conversion format used throught the rest of the tables. Corrected tensile strength in Basic Requirement Table 6.CE for last 70 durometer entry. Was 17 in 1978. Sometime after that point the value was inadvertently changed to 27. The English reference units indicate that 27 was a wrong value. ASTM D2000 has always been 17. Corrected Suffix Table 6.DH@ EO16 elongation loss property for grade 3 to ?30%. This was originally ?30@ was inadvertently changed after 1978 to ?40. ASTM D2000 has always been ?30%. Needed for consistency between ASTM D2000 and SAE J200. Suffix tables 6.FC@ 6.FE and 6.GE list different requirements for tear strength@ based on tensile strength. Currently reads ""under 7.0 MPa"" and ""7.0 to 10.0"". Change the latter to read ""7.0 and above"". This would cover any future changes to the basic requirements table for higher tensile materials. Basic Requirements Table 6.GE@ 80 durometer 5 MPa row@ elongation limit inadvertently changed after 1978 to 100%. ASTM has 150%@ and 1978 J200 version has 150%. Change back to 150% to agree with ASTM and previous J200 version."
J200-2005由SAE - SAE International 发布于 2005-01-01，并于 2006-11-02 实施。
非常抱歉，我们暂时无法提供预览，您可以试试： 免费下载 J200-2005 前三页，或者稍后再访问。
点击下载后，生成下载文件时间比较长，请耐心等待......
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证：京ICP证110310号