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标准名称：	信息技术 系统间远程通信和信息交换50插针接口连接器配合性尺寸和接触件编号分配
英文名称：	Information technology--Telecommunications and information exchange between systems--50-pole interface connector mateability dimensions and contact number assignments
中标分类：	电子元器件与信息技术 >> 信息处理技术 >> 数据信息
ICS分类：	信息技术、办公机械设备 >> 开放系统互连(OSI) >> 物理层
发布部门：	中华人民共和国国家质量监督检验检疫总局
发布日期：	2000-01-03
实施日期：	2000-08-01
首发日期：	2000-01-03
作废日期：	1900-01-01
主管部门：	国家标准化管理委员会
归口单位：	全国信息技术标准化技术委员会
起草单位：	中国电子技术标准化研究所
出版社：	中国标准出版社
出版日期：	2004-04-16
页数：	12页
书号：	155066.1-16890

本标准规定了在数据终端设备(DTE）和数据电路终接设备(DCE）之间的接口处使用的50插针连接器，包括必要的配合性尺寸和接触件编号的分配。该连接器适用于接口功能特性符合GB/T3454《数据终端设备(DTE）和数据电路终接设备(DCE）之间的接口电路定义表》，并且接口电气特性符合ITU-Ｔ建议V.12的场合。

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Product Code:SAE USCAR5-2
Title:Avoidance of Hydrogen Embrittlement of Steel
Issuing Committee:
Scope:This standard outlines the conditions that enhance the risk of hydrogen embrittlement of steel and define the relief procedures required to minimize the risk of hydrogen embrittlement. It is intended to control the process. 1.1 Hydrogen embrittlement of steel, which can cause brittle fractures under stress, occurs as a result of the absorption of hydrogen during cleaning, phosphate coating and plating processes. The susceptibility to hydrogen embrittlement increases with increasing stress (internal or externally applied stress) and increasing material strength. 1.2 Hardness readings in this specification are in Vickers scale. SAE J417 should be referred to for conversion to other scales. NOTE 1: All references to temperatures relate to part core temperature and not the indicated oven air temperature. Statistical data of verifications in temperature at the center of the oven load and oven temperature shall be established to develop the oven profile. The temperature of parts in a batch type of baking furnace shall be monitored with a thermocouple placed in the middle of the load. For continuous bake ovens a temperature trace through the oven must be run with a calibrated thermocouple in the lowest temperature position, at least once a year.