热钢或铸钢指定化学分析的产品分析允许偏差
详细信息
- 中文主题词：合金 ; 分析 ; 机动车工程 ; 碳 ; 化学分析和试验 ; 化合物 ; 组分 ; 不锈的 ; 钢 ; 运载工具
- 标准号：SAE J 409-1995
- 发布日期：1995-02-01
- 英文题名：Product Analysis Permissible Variations from Specified chemical analysis of a Heat or Cast of Steel
- 英文主题词：Alloys ; Analysis ; Automotive engineering ; Carbon ; Chemical analysis and testing ; Chemicals ; Composition ; Stainless ; Steels ; Vehicles
- 标准状态：现行
- 发布单位：US-SAE
- 国际标准分类号：77.040.30
- 载体形态：9P.;A4
- 中国标准分类号：H11
- 国别：美国机动车工程师协会
文摘
Supplementary to the heat or cast analysis, a product analysis may be made on steel in the semifinished or finished form. For definitions and methods of sampling steel for product chemical analysis, refer to sAE J408. A product analysis is a chemical analysis of the semifinished or finished steel to determine conformance to the specification requirements. The range of the specified chemical composition is normally expanded to take into account deviations associated with analytical reproducibility and the heterogeneity of the steel. Individual determinations may vary from the specified heat or cast analysis ranges or limits to the extent shown in Tables 1 through 5. The several determinations of any element in a heat or cast may not vary both above and below the specified range except for lead. Tables 1 through 5 provide permissible limits for various steel forms and composition types. Rimmed or capped steels are not subject to product analysis limits because they are characterized by an inherently large variation in chemical composition. Also, for rephosphorus and sulfur because of the degree to which these elements segregate. Boron is not subject to product analysis tolerances.