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GB/T 223.4-2008 English PDF

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GB/T 223.4-2008: Iron, steel and alloy -- Determination of manganese content -- Potentiometric or visual titration method
Status: Valid

GB/T 223.4: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 223.4-2008	English	229	Add to Cart	3 days [Need to translate]	Iron, steel and alloy -- Determination of manganese content -- Potentiometric or visual titration method	Valid	GB/T 223.4-2008
GB/T 223.4-1988	English	199	Add to Cart	2 days [Need to translate]	Methods for chemical analysis of iron, steel and alloy--The volumetric method for determination of manganese content by ammonium nitrate oxidation	Obsolete	GB/T 223.4-1988

PDF similar to GB/T 223.4-2008

Standard similar to GB/T 223.4-2008

GB/T 223.37 GB/T 223.5 GB/T 223.31 GBZ/T 223 GB/T 223.11 GB/T 223.23

Basic data

Standard ID	GB/T 223.4-2008 (GB/T223.4-2008)
Description (Translated English)	Iron, steel and alloy -- Determination of manganese content -- Potentiometric or visual titration method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H11
Classification of International Standard	77.080.20
Word Count Estimation	10,150
Date of Issue	2008-05-30
Date of Implementation	2008-12-01
Older Standard (superseded by this standard)	GB/T 223.4-1988
Quoted Standard	GB/T 6379.1; GB/T 6379.2; GB/T 20066; ISO 385-1; ISO 648; ISO 1042; ISO 3696; ISO 4942; ISO 4947; ISO 5725-3; ISO 9647
Regulation (derived from)	National Standard Approval Announcement 2008 No.9 (Total No.122)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the determination of manganese content by potentiometric titration or visual titration. This section applies to steel for the determination of the mass fraction of 2% to 25% manganese content. Vanadium, cerium interference measurement results if the sample is less than 0. 01% cerium or vanadium content of less than 0. 005%, the interference can be ignored. If the sample is greater than 0. 01% cerium or vanadium content greater than 0. 005% of the theoretical value can be corrected.

GB/T 223.4-2008: Iron, steel and alloy -- Determination of manganese content -- Potentiometric or visual titration method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Iron, steel and alloy.Determination of manganese content.Potentiometric or visual titration method ICS 77.080.20 H11 National Standards of People's Republic of China Replacing GB/T 223.4-1988 Determination of manganese steel and alloy Potentiometric titration or visual titration method Posted 2008-05-30 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This section GB/T 223 instead of GB/T 223.4-1988 "steel and alloy chemical analysis method for the determination of ammonium nitrate oxidation capacity Manganese content. " This portion of the GB/T 223.4-1988 compared primarily with the following modifications. --- Modify the name of this section, an increase of potentiometric titration; --- Increasing the analysis of reagent water and help content, modify the concentration of representation and removed by titration correction vanadium, cerium Interfere with the reagents; --- Modify Weigh test and modify the quantity expressed vanadium, vanadium free samples and cerium, cerium sample analysis steps related provisions, increasing vanadium and cerium Theoretical correction content; --- Modify the results of the calculation formula, and the formula in the amount of the unit; --- Standardized precision functional description. This section of the Appendices A and B are informative appendices. This part is proposed by the China Iron and Steel Association. This part of the National Steel Standardization Technical Committee. This section is responsible for drafting units. China Iron and Steel Research Institute Group. The main drafters of this section. Wang Xiaohui, Yu Silver Valley, Luoqian Hua, Ke Ruihua. This part of the standard replaces the previous editions are. GB/T 223.4-1981, GB 223.4-1988. Determination of manganese steel and alloy Potentiometric titration or visual titration method Warning. Use of this section shall be a person experiences regular laboratory work. This section does not indicate that all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This section provides the determination of manganese content by potentiometric titration or visual titration. This section applies to steel in order to determine the mass fraction of 2% to 25% manganese content. Vanadium, cerium interference measurement results. If the sample is less than 0.01% cerium or vanadium content is less than 0.005%, the interference can be ignored. in case Samples or cerium content greater than 0.01% vanadium content greater than 0.005%, the theoretical value correction.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 6379.1 measurement methods and results of Accuracy (trueness and precision) --- Part 1. General principles and definitions GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) --- Part 2. Determine weight standard measurement method Refolding and basic methods of reproduction GB/T 20066 Steel and iron - Sampling and determination of chemical composition of the preparation of samples (GB/T 20066-2006ISO 14284 with. 1996, IDT) ISO 385-1 Laboratory glassware Burettes --- --- - Part 1. General requirements ISO 648 Laboratory glassware --- single reticle pipette ISO 1042 laboratory glassware --- single reticle flask ISO 3696 for analytical laboratory use specifications and test methods --- ISO 4942 Determination of vanadium content in steel --- --- N-BPHA spectrophotometry ISO 4947 Determination of vanadium content in steel --- --- potentiometric titration ISO 5725-3 measurement methods and results of Accuracy (trueness and precision) --- Part 3. standard methods of measurement precision Intermediate measure ISO 9647 Determination of vanadium content in steel --- --- flame atomic absorption spectrometry Principle 3 Sample with a suitable acid dissolved, add phosphoric acid. In the micro-phosphate smoking status, with ammonium nitrate to manganese oxide to trivalent. In N- benzene on behalf o Amino acid as indicator, with ferrous ammonium sulfate standard solution visual titration of trivalent manganese, or potential drop of ferrous ammonium sulfate standard solution set. If the sample containing vanadium, cerium, manganese response correction.

4 Reagents

Analysis, unless otherwise stated, use only two water recognized analytical reagent and ISO 3696 requirements. 4.1 Ammonium nitrate, NH4NO3. 4.2 urea.

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