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.【英文标准名称】:Preparationofsteelsubstratesbeforeapplicationofpaintsandrelatedproducts-Visualassessmentofsurfacecleanliness-InformativesupplementtoPart1:Representativephotographicexamplesofthechangeofappearanceimpartedtosteelwhenblast-
【原文标准名称】:涂料和有关产品使用前钢衬底的制备.表面清洁度的视觉评价.第1部分的补充信息:用不同磨料喷砂处理时钢表面变化的典型摄影实例
【标准号】:ISO8501-1Supplement-1994
【标准状态】:作废
【国别】:国际
【发布日期】:1994-12
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC35
【标准类型】:()
【标准水平】:()
【中文主题词】:磨料;精整;外观;变更;颜色变化;钢;评定;覆层;表面预处理;摄影记录;锈蚀度
【英文主题词】:
【摘要】:Providesrepresentativephotographicexamplesofthecolourchangesimpartedtosteelthatisdryblast-cleanedtopreparationgradeSa3,withdifferentmetallicandnon-metallicabrasives.
【中国标准分类号】:A29
【国际标准分类号】:25_220_10
【页数】:90P;A4
【正文语种】:英语