基本信息
| 标准名称： | 锆及锆合金化学分析方法 蒸馏分离--奈斯勒试剂分光光度法测定氮量 |
| 英文名称： | Zirconium and zirconium alloys-Determination of nitrogen content-Distillation-Nessler reagent spectrophotometric method |
| 中标分类： |
冶金 >>
金属化学分析方法 >>
稀有金属及其合金分析方法 |
| ICS分类： |
冶金 >>
有色金属 >>
镉、钴及其合金
|
| 发布部门： | 国家技术监督局 |
| 发布日期： | 1992-01-01 |
| 实施日期： | 1993-06-01 |
| 首发日期： | 1992-11-05 |
| 作废日期： | 1900-01-01 |
| 主管部门： | 中国有色金属工业协会 |
| 提出单位： | 中国有色金属工业总公司 |
| 归口单位： | 全国有色金属标准化技术委员会 |
| 起草单位： | 西北有色金属研究院 |
| 起草人： | 王彦君 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1993-06-01 |
| 页数： | 3页 |
适用范围
本标准规定了锆及锆合金中氮含量的测定方法。
本标准适用于锆及锆合金中氮含量的测定。
前言
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目录
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引用标准
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所属分类： 冶金 金属化学分析方法 稀有金属及其合金分析方法 冶金 有色金属 镉 钴及其合金
Product Code:SAE J1442
Title:High-Strength, Hot-Rolled Steel Bars
Issuing Committee:Carbon And Alloy Steels Committee
Scope: This SAE Recommended Practice covers two levels of high strength structural low-alloy steel bars having minimum Yield Points of 345 MPa (50 ksi) and 450 MPa (65 ksi).The two strength levels are 345 and 450 MPa or 50 and 65 ksi minimum yield point. Different chemical compositions are used to achieve the specified mechanical properties. In some cases there are significant differences in chemical composition for the same strength level, depending on the fabricating requirements.It should be noted that although the mechanical properties for a steel grade sourced from different suppliers may be the same, the chemical composition may vary significantly. The fabricator should be aware that certain compositional differences may effect the forming, welding, and/or service requirements of the material. It is therefore recommended that the fabricator consult with the producer to understand the effect of chemical composition.The products within the scope of this document include bars of the following types and sizes:Rounds, squares, and hexagons of all sizes (cut length only), flats 5.2 mm (0.203 in) and greater in thickness but not greater than 150 mm (6 in) wide, and flats greater than 5.8 mm (0.229 in) thick and over 150 mm (6 in) to 204 mm (8 in) wide.This document previously covered plates, structural shapes, and bar size shapes of Grades 290A, 345A, 415A, 450A, 345W, 345F, 415F, 485F, and 550F as well as bars of Grades 290A, 415A, and 345W. These products are no longer covered; requirements for these products and grades can be found in ASTM Specifications as follows in Table 1:
Rationale: This SAE Recommended Practice covers two levels of high strength structural low-alloy steel bars having minimum Yield Points of 345 MPa (50 ksi) and 450 MPa (65 ksi).The two strength levels are 345 and 450 MPa or 50 and 65 ksi minimum yield point. Different chemical compositions are used to achieve the specified mechanical properties. In some cases there are significant differences in chemical composition for the same strength level, depending on the fabricating requirements.It should be noted that although the mechanical properties for a steel grade sourced from different suppliers may be the same, the chemical composition may vary significantly. The fabricator should be aware that certain compositional differences may effect the forming, welding, and/or service requirements of the material. It is therefore recommended that the fabricator consult with the producer to understand the effect of chemical composition.The products within the scope of this document include bars of the following types and sizes:Rounds, squares, and hexagons of all sizes (cut length only), flats 5.2 mm (0.203 in) and greater in thickness but not greater than 150 mm (6 in) wide, and flats greater than 5.8 mm (0.229 in) thick and over 150 mm (6 in) to 204 mm (8 in) wide.This document previously covered plates, structural shapes, and bar size shapes of Grades 290A, 345A, 415A, 450A, 345W, 345F, 415F, 485F, and 550F as well as bars of Grades 290A, 415A, and 345W. These products are no longer covered; requirements for these products and grades can be found in ASTM Specifications as follows in Table 1: