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GB/T 42513.1-2023: Methods for chemical analysis of nickel alloys - Part 1: Determination of chromium content - Potentiometric titration method with ammonium iron(II) sulfate
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Methods for chemical analysis of nickel alloys - Part 1: Determination of chromium content - Potentiometric titration method with ammonium iron(II) sulfate
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GB/T 42513.1-2023
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Basic data | Standard ID | GB/T 42513.1-2023 (GB/T42513.1-2023) | | Description (Translated English) | Methods for chemical analysis of nickel alloys - Part 1: Determination of chromium content - Potentiometric titration method with ammonium iron(II) sulfate | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.40 | | Word Count Estimation | 15,182 | | Date of Issue | 2023-05-23 | | Date of Implementation | 2023-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42513.1-2023: Methods for chemical analysis of nickel alloys - Part 1: Determination of chromium content - Potentiometric titration method with ammonium iron(II) sulfate
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ICS 77:120:40
CCSH13
National Standards of People's Republic of China
Chemical Analysis Methods of Nickel Alloys
Part 1: Determination of chromium content
Ferrous Ammonium Sulfate Potentiometric Titration
Released on 2023-05-03 Implemented on 2023-12-01
State Administration for Market Regulation
Released by the National Standardization Management Committee
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"
drafting:
This document is part 1 of GB/T 42513 "Methods for Chemical Analysis of Nickel Alloys": GB/T 42513 has issued the following parts:
--- Part 1: Determination of chromium content Potentiometric ferrous ammonium sulfate titration method:
This document is modified to adopt ISO 7529:2017 "Determination of Chromium Content in Nickel Alloys by Ferrous Ammonium Sulfate Potentiometric Titration": This document is related to
Compared with ISO 7529:2017, there are many structural adjustments: Appendix A lists the structure number comparison between this document and ISO 7529:2017
list:
There are technical differences between this document and ISO 7529:2017, and a vertical single line is used in the outer margin of the terms involved
(|) are marked: See Appendix B for a list of these technical differences and their causes:
The following minimal editorial changes have been made to this document:
--- In order to coordinate with the existing standards, the name of the standard is changed to "Methods for Chemical Analysis of Nickel Alloys Part 1: Determination of Chromium Content Sulfuric acid
Ferric Ammonium Potentiometric Titration":
Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by China Nonferrous Metals Industry Association:
This document is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243):
This document is drafted by: Jiuquan Iron and Steel (Group) Co:, Ltd:, Beikuang Testing Technology Co:, Ltd:, National Standard (Beijing) Inspection Certification
Securities Co:, Ltd:, Shenzhen Zhongjin Lingnan Nonferrous Metals Co:, Ltd:, Guangxi Zhuang Autonomous Region Analysis and Testing Research Center, Shanxi Taigang
Rust Steel Co:, Ltd:, Guangdong Academy of Sciences Industrial Analysis and Testing Center, Fujian Zijin Mining and Metallurgy Testing Technology Co:, Ltd:, Gansu Hongji Testing
Ltd:
The main drafters of this document: Ge Shuhai, Kang Kaibin, Zhu Xianxue, Wang Lei, Zhu Weihua, Zhuang Lili, Ruan Guise, Li Fengyan, Zhang Yu, Chen Guiluan,
Tan Xiuli, Xu Jieyu, Kong Haiying, Ma Zhenyuan, Chen Xiongfei, Pan Yangchang, Lin Yingling, Liao Guiping, Xu Yefeng, Huang Yifan, Lu Junya:
Introduction
Nickel alloys are widely used in instruments and meters, electronic communications, pressure vessels, corrosion-resistant devices, and are widely used in aerospace and high-end special-purpose
Machinery and equipment manufacturing and other industries are one of the important metal raw materials for industrial development: Chromium is an important component in nickel alloys, and its content determines the
The performance of nickel alloys has produced products with various uses: The determination of chromium content in nickel alloys is of great significance to the production and use of nickel alloys: nickel
International standards for alloy chemical analysis methods have existed for decades: With the progress of my country's industry, the production and import of nickel alloys
Therefore, the transformation of international standards into national standards is of great significance to help the development and upgrading of the non-ferrous industry and the development of the domestic manufacturing industry:
righteous: GB/T 42513 aims to establish a complete and practicable set of tests for chromium, phosphorus, niobium, molybdenum, aluminum, vanadium, silicon, cobalt, copper and other elements in nickel alloys
standard method, transformed into the following international standards:
---ISO 7592:2017 Determination of chromium content in nickel alloys - ferrous ammonium sulfate potentiometric titration method;
---ISO 9388:1992 Determination of Phosphorus Content in Nickel Alloy Molybdenum Blue Molecular Absorption Spectrometry;
--- ISO 7530-1:2015 Flame atomic absorption spectroscopic analysis of nickel alloys Part 1: Determination of cobalt, chromium, copper, iron and manganese;
---ISO 11435:2011 Determination of Molybdenum Content in Nickel Alloys Inductively Coupled Plasma Atomic Emission Spectrometry;
---ISO 7530-7:1992 Flame atomic absorption spectroscopic analysis of nickel alloys - Part 7: Determination of aluminum content;
---ISO 7530-8:1992 Flame atomic absorption spectroscopic analysis of nickel alloys - Part 8: Determination of silicon content;
---ISO 7530-9:1993 Nickel Alloy Flame Atomic Absorption Spectroscopy Part 9: Determination of Vanadium Content;
---ISO 22033:2011 Determination of Niobium Content in Nickel Alloys Inductively Coupled Plasma/Atomic Emission Spectrometry;
---ISO 11436:1993 Determination of total boron content in nickel and nickel alloys Curcuma molecular absorption spectrometry:
GB/T 42513 is proposed to consist of 9 parts:
--- Part 1: Determination of chromium content Potentiometric ferrous ammonium sulfate titration method: The purpose is to establish the determination of chromium content in nickel alloy
method:
--- Part 2: Determination of phosphorus content Molybdenum blue spectrophotometry: The purpose is to establish the determination method of phosphorus content in nickel alloy:
--- Part 3: Determination of cobalt, chromium, copper, iron and manganese content flame atomic absorption spectrometry: The purpose is to establish the cobalt,
Method for determination of chromium, copper, iron and manganese content:
--- Part 4: Determination of molybdenum content Inductively coupled plasma atomic emission spectrometry: The purpose is to establish the content of molybdenum in nickel alloy
Quantitative method:
--- Part 5: Determination of aluminum content Nitrous oxide - flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry
Law: The purpose is to establish the determination method of aluminum content in nickel alloy:
--- Part 6: Determination of silicon content Nitrous oxide - flame atomic absorption spectrometry and molybdenum blue spectrophotometry: The purpose is to establish the nickel
Method for determination of silicon content in alloys:
--- Part 7: Determination of vanadium content Nitrous oxide - flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry
Law: The purpose is to establish the determination method of vanadium content in nickel alloy:
--- Part 8: Determination of niobium content Inductively coupled plasma atomic emission spectrometry: The purpose is to establish the content of niobium in nickel alloy
Quantitative method:
--- Part 9: Determination of total boron content Curcumin spectrophotometry: The purpose is to establish the determination of total boron content in nickel alloy
method:
This document can ensure the advanced nature of national standards, promote the progress of my country's nickel alloy detection technology, and ensure that industry practitioners are in production,
There are standards to follow in the process of application, scientific research, and testing, and it fills the gap in the chemical analysis method for the determination of chromium content in nickel alloys in my country:
Chemical Analysis Methods of Nickel Alloys
Part 1: Determination of chromium content
Ferrous Ammonium Sulfate Potentiometric Titration
WARNING --- Personnel using this document should have formal laboratory work experience: This document does not address all possible security issues
question: It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations:
1 Scope
This document describes a method for the determination of chromium in nickel alloys by potentiometric titration of ferrous ammonium sulfate:
This document is applicable to the determination of chromium content in nickel alloy, the determination range (mass fraction) 1:00% ~ 22:00%:
This document does not apply to the detection of nickel alloys containing insoluble chromium carbides:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: dated citations
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
GB/T 12805 Laboratory glass instrument burettes (GB/T 12805-2011, ISO 385:2005, NEQ)
GB/T 12806 Laboratory Glass Instruments Single Marked Line Volumetric Flasks (GB/T 12806-2011, ISO 1042:1998, NEQ)
GB/T 12808 Laboratory glassware single-marked pipette
3 Terms and Definitions
This document does not have terms and definitions that need to be defined:
4 principles
Dissolve the sample with hydrochloric acid or nitric acid, smoke from sulfuric acid or sulfur-phosphorus mixed acid to drive away chloride ions, and dissolve salts in water: Catalyst with silver nitrate and persulfur
Ammonium acid oxidizes chromium to chromium (VI), boils to remove excess persulfate, and dilute hydrochloric acid reduces manganese (VII): Titration of Chromium with Ferrous Ammonium Sulfate Standard Solution
(Ⅵ), potentiometric method to determine the titration end point:
For samples containing vanadium, based on the vanadium content obtained through accurate measurement, the interference of vanadium was corrected by theoretical calculation:
5 reagents
Unless otherwise stated, only approved reagents of analytical grade and distilled water or water of equivalent purity were used during the analysis:
5:1 Ammonium persulfate:
5:2 Hydrochloric acid, ρ=1:19g/mL:
5:3 Nitric acid, ρ=1:41g/mL:
5:4 Sulfuric acid, ρ=1:84g/mL:
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