YS/T 539.4: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 539.4-2024 | English | RFQ |
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(Chemical analysis method for nickel-based alloy powder - Part 4: Determination of chromium content - Edge Edge controller)
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YS/T 539.4-2024
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| YS/T 539.4-2009 | English | 199 |
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Methods for chemical analysis of nickel base alloy powder. Part 4: Determination of chromium content. Ammonium persulfate oxidation titration
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YS/T 539.4-2009
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| YS/T 539.4-2006 | English | 199 |
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Nickel base alloy powder. Determination of chromium content. Persulfate oxidation titrimetric method
| Obsolete |
YS/T 539.4-2006
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Basic data | Standard ID | YS/T 539.4-2024 (YS/T539.4-2024) | | Description (Translated English) | (Chemical analysis method for nickel-based alloy powder - Part 4: Determination of chromium content - Edge Edge controller) | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H16 | | Classification of International Standard | 77.16 | | Date of Issue | 2024-10-24 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | YS/T 539.4-2009 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the method for determining the chromium content in nickel-based alloy powder by ammonium persulfate oxidation titration. This standard is applicable to the determination of chromium (excluding vanadium) content in nickel-based alloy powder, with a determination range of 2.00% to 35.00%. | YS/T 539.4-2009: Methods for chemical analysis of nickel base alloy powder. Part 4: Determination of chromium content. Ammonium persulfate oxidation titration
---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.
Methods for chemical analysis of nickel base alloy powder.Part 4. Determination of chromium content.Ammonium persulfate oxidation titration
ICS 77.120.40
H71
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 539.4-2006
Nickel-based alloy powder chemical analysis
Part 4. Determination of chromium content
Ammonium persulfate oxidation titration
Posted 2009-12-04
2010-06-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 539 "nickel-based alloy powder chemical analysis method" is divided into 13 parts.
--- Part 1. Determination of the amount of boron acid-base titration;
--- Part 2. Determination of the amount of chrome aluminum Azure S Spectrophotometry;
--- Part 3. Determination of silicon content of perchloric acid dehydration gravimetric method;
--- Part 4. Determination of chromium content of ammonium persulfate oxidation titration;
--- Part 5. Determination of manganese content of sodium periodate (K) oxidation spectrophotometry;
--- Part 6. Determination of iron content of titanium trichloride - potassium dichromate titration;
--- Part 7. Determination of cobalt content nitroso R salt spectrophotometric method;
--- Part 8. Determination of copper content Neocuproine - chloroform extraction spectrophotometric method;
--- Part 9. Determination of copper content of sodium thiosulfate iodometry;
--- Part 10. Determination of molybdenum content - Thiocyanate spectrophotometric method;
--- Part 11. Determination of cinchonine gravimetric method tungsten content;
--- Part 12. Determination of phosphorus content of n-butyl alcohol - chloroform extraction spectrophotometric method;
--- Part 13. Determination of oxygen pulse heating inert gas fusion - infrared absorption method.
This section is YS/T Section 4539 of.
The partial replacement of YS/T 539.4-2006 "nickel-based alloy powder chemical analysis of ammonium persulfate oxidation titration method for the determination of chromium content."
This portion of YS/T 539.4-2006 with more significant changes are as follows.
--- Increasing the foreword;
--- Complements the repeatability limit.
The non-ferrous metal part by the National Standardization Technical Committee and centralized.
This section is responsible for drafting unit. Beijing Nonferrous Metal Research Institute, West An Ruijian metal limited liability company.
This section is drafted. Beijing Nonferrous Metal Research Institute, Steel Research Institute.
The main drafters of this section. Liu Pengyu, Plant Protection], Zheng Guanghe.
This part of the standard replaces the previous editions are.
--- GB/T 8638.4-1988;
--- YS/T 539.4-2006.
Nickel-based alloy powder chemical analysis
Part 4. Determination of chromium content
Ammonium persulfate oxidation titration
1 Scope
YS/T 539 This part specifies the method for determination of nickel-base alloy powder chromium.
This section applies to the determination of chromium in nickel-base alloy powder (without vanadium) content measurement range. 2% to 30%.
2 Method summary
The sample is dissolved in acid in sulfuric acid - phosphoric acid, silver nitrate as a catalyst, ammonium persulfate to Cr (Ⅲ) oxidized to Cr (Ⅵ), sulfur
Ferrous ammonium acid solution was titrated.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 hydrochloride (ρ1.19g/mL).
Nitrate 3.2 (ρ1.42g/mL).
3.3 Hydrofluoric acid (ρ1.15g/mL).
3.4 phosphoric acid (ρ1.67g/mL).
3.5 sulfate (1 + 1).
3.6 silver nitrate solution (10g/L). Weigh 1g silver nitrate dissolved in water, a few drops of nitric acid (3.2) and diluted with water to 100mL, mix,
Store in a brown bottle.
3.7 solution of ammonium persulfate (250g/L), the time is now equipped with.
3.8 manganese sulfate solution (5g/L).
3.9 sodium chloride solution (50g/L).
3.10 diphenylamine solution of sodium (2g/L).
3.11 N- benzene-generation anthranilic acid solution (2g/L). Weigh 0.2gN- benzene on behalf of anthranilic acid aqueous solution of sodium carbonate dissolved in 100mL
(2g/L), and dissolved by heating.
3.12 potassium dichromate standard solution. Weigh 5.6582g baseline potassium dichromate (previously after 105 ℃ drying 1h, placed in a desiccator, cooled
To room temperature) was placed in 300mL beaker, dissolved in water and transferred to 2000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL
Chromium containing 1mg.
3.13 ammonium ferrous sulfate standard titration solution
3.13.1 preparation. Weigh 10g ferrous ammonium sulfate, adding the right amount of water and 100mL of sulfuric acid (3.5) dissolved and transferred to 1000mL volumetric flask,
Dilute with water to volume, and mix.
3.13.2 Calibration. Pipette 25.00mL potassium dichromate standard solution (3.12) 3 parts, were placed in 500mL beaker, add 4mL phosphorus
Acid (3.4), 30mL sulfuric acid (3.5), dilute with water to 200mL. Ferrous ammonium sulfate standard titration solution (3.13) titration until the solution pale
Yellow, add 3 drops of benzene on behalf of N- anthranilic acid solution (3.11) and continue titration to the solution from red to bright green rose as the end point. 3 parts of chromium
Ferrous ammonium sulfate standard titration solution (3.13) standard solution consumed does not exceed the difference between the volume of 0.05mL, averaged.
According to formula (1) calculate the standard ferrous ammonium sulfate titration solution titer of chromium.
T = ρ
· V0
Vp 1 ×
10-3 (a)
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