YS/T 539.4-2024 English PDFYS/T 539.4: Historical versions
Basic dataStandard 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of International Standard: 77.16 Date of Issue: 2024-10-24 Date of Implementation: 2025-05-01 Older Standard (superseded by this standard): YS/T 539.4-2009 Issuing agency(ies): Ministry of Industry and Information Technology Summary: This standard specifies the method for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 ForewordYS/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 titration1 ScopeYS/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 summaryThe 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 ReagentsUnless 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) ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of YS/T 539.4-2024_English be delivered?Answer: Upon your order, we will start to translate YS/T 539.4-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of YS/T 539.4-2024_English with my colleagues?Answer: Yes. The purchased PDF of YS/T 539.4-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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