YS/T 539.7: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 539.7-2024 | English | RFQ |
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(Chemical analysis method for nickel-based alloy powder - Part 7: Determination of phosphorus content - Butanol-chloroform extraction spectrophotometry)
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YS/T 539.7-2024
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| YS/T 539.7-2009 | English | 239 |
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Methods for chemical analysis of nickel base alloy powder. Part 7: Determination of cobalt content. Nitroso-R salt spectrophotometry
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YS/T 539.7-2009
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| YS/T 539.7-2006 | English | 199 |
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Nickel base alloy powder. Determination of cobalt content. Nitroso-R salt spectrophotometric method
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YS/T 539.7-2006
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Basic data | Standard ID | YS/T 539.7-2024 (YS/T539.7-2024) | | Description (Translated English) | (Chemical analysis method for nickel-based alloy powder - Part 7: Determination of phosphorus content - Butanol-chloroform extraction spectrophotometry) | | 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Standard | 77.16 | | Date of Issue | 2024-10-24 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | YS/T 539.12-2009 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the method for determining the phosphorus content in nickel-based alloy powder by n-butanol-chloroform extraction spectrophotometry. This standard is applicable to the determination of phosphorus content in nickel-based alloy powder, with a determination range of 0.0005% to 0.050%. | YS/T 539.7-2009: Methods for chemical analysis of nickel base alloy powder. Part 7: Determination of cobalt content. Nitroso-R salt spectrophotometry
---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 7. Determination of cobalt content.Nitroso-R salt spectrophotometry
ICS 77.120.40
H71
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 539.7-2006
Nickel-based alloy powder chemical analysis
Part 7. Determination of cobalt content
Nitroso R salt spectrophotometric method
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 539 Part 7.
The partial replacement of YS/T 539.7-2006 "nickel-based alloy powder chemical analysis nitroso R salt spectrophotometric determination of cobalt content."
This portion of YS/T 539.7-2006 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, China Nonferrous Metals Industry Institute of Standards and Metrology and Quality.
This section is drafted. Beijing Nonferrous Metal Research Institute, Steel Research Institute.
The main drafters of this section. red Chen Yun, Yang Ping, Plant Protection].
This part of the standard replaces the previous editions are.
--- GB/T 8638.7-1988;
--- YS/T 539.7-2006.
Nickel-based alloy powder chemical analysis
Part 7. Determination of cobalt content
Nitroso R salt spectrophotometric method
1 Scope
YS/T 539 This part specifies the method for determination of nickel-base alloy powder of cobalt content.
This section applies to the determination of nickel base alloy powder in an amount of cobalt, measurement range. 0.1% to 3%.
2 Method summary
Sample was dissolved in a mixed acid, citric acid, ammonium, sodium nitrite in the presence of, at pH 5.5 to 7.5, Co (Ⅱ) is oxidized to
Co (Ⅲ), and nitroso -R red complex salt formation, measured at 530nm wavelength spectrophotometer absorbance.
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 sulfate (1 + 1).
3.5 sulfuric acid - phosphoric acid mixture. A 150mL sulfuric acid (ρ1.84g/mL) with stirring injection 700mL water, then add 150mL phosphate
(Ρ1.69g/mL), and mix.
3.6 ammonia ammonium citrate solution (250g/L). Weigh 62.5g ammonium citrate in 400mL beaker, add 200mL water dissolved, add
5mL ammonia (ρ0.90g/mL), diluted with water to 250mL, and mix.
3.7 sodium nitrite solution (5g/L).
3.8 nitroso -R salt (1-nitroso - 2 - naphthol-3,6-sodium) solution (5g/L), the time is now equipped with.
3.9 cobalt standard stock solution. Weigh 0.1000g pure cobalt (Co≥99.9%) in 250mL beaker, add 15mL sulfuric acid (3.4), cover
Table dish dissolved by heating. Cooled and transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 100μg cobalt.
3.10 Cobalt Standard Solution A. Pipette 50.00mL cobalt standard stock solution (3.9) in 250mL volumetric flask, dilute with water to volume, and mix.
This solution 1mL containing 20μg cobalt.
3.11 Cobalt standard solution B. Pipette 25.00mL cobalt standard stock solution (3.9) in 250mL volumetric flask, dilute with water to volume, and mix.
This solution 1mL containing 10μg cobalt.
4 Instrument
Spectrophotometer.
Step 5 Analysis
5.1 Sample
Weigh 0.20g sample, accurate to 0.0001g.
5.2 Determination of the number of
Independently measured twice and averaged.
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