YS/T 539.6: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 539.6-2024 | English | RFQ |
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(Chemical analysis method for nickel-based alloy powder - Part 6: Determination of iron content - titanium trichloride-potassium dichromate titration method)
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YS/T 539.6-2024
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| YS/T 539.6-2009 | English | 239 |
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Methods for chemical analysis of nickel base alloy powder. Part 6: Determination of iron content. Titanium trichloride-potassium dichromate titration
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YS/T 539.6-2009
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| YS/T 539.6-2006 | English | 199 |
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Nickel base alloy powder. Determination of iron content. Titanium trichloride-potassium dichromate titrimetric method
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YS/T 539.6-2006
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Basic data | Standard ID | YS/T 539.6-2024 (YS/T539.6-2024) | | Description (Translated English) | (Chemical analysis method for nickel-based alloy powder - Part 6: Determination of iron content - titanium trichloride-potassium dichromate titration method) | | 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Standard | 77.16 | | Date of Issue | 2024-10-24 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | YS/T 539.6-2009 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the method for determining the iron content in nickel-based alloy powder by titanium trichloride-potassium dichromate titration. This standard is applicable to the determination of iron content in nickel-based alloy powder, with a determination range of 1.00% to 27.00%. | YS/T 539.6-2009: Methods for chemical analysis of nickel base alloy powder. Part 6: Determination of iron content. Titanium trichloride-potassium dichromate titration
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Methods for chemical analysis of nickel base alloy powder.Part 6. Determination of iron content.Titanium trichloride-potassium dichromate titration
ICS 77.120.40
H71
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 539.6-2006
Nickel-based alloy powder chemical analysis
Part 6. Determination of iron content
Titanium trichloride - potassium dichromate 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 YS/T 539 Part 6.
The partial replacement of YS/T 539.6-2006 "nickel-based alloy powder chemical analysis of titanium trichloride - potassium dichromate titration
The amount of iron. "
This portion of YS/T 539.6-2006 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. Li Na, Zhang Zhuo, Saline.
This part of the standard replaces the previous editions are.
--- GB/T 8638.6-1988;
--- YS/T 539.6-2006.
Nickel-based alloy powder chemical analysis
Part 6. Determination of iron content
Titanium trichloride - potassium dichromate titration
1 Scope
YS/T 539 This part specifies the method for determination of nickel-base alloy powder of iron content.
This section applies to the determination of nickel base alloy powder of iron content measurement range. 1% to 20%.
2 Method summary
The sample is dissolved by acid, perchloric acid smoke will take the Cr (Ⅲ) oxidized to Cr (Ⅵ). The precipitation of iron and chromium, nickel and other elements separated by ammonia. precipitation
Dissolution with hydrochloric acid, sodium tungstate as an indicator of titanium trichloride Fe (Ⅲ) reduction to Fe (Ⅱ), diphenylamine sulfonate as indicator with dichromate
Potassium standard solution titration.
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 ammonium chloride.
3.2 hydrochloride (ρ1.19g/mL).
Nitrate 3.3 (ρ1.42g/mL).
3.4 Hydrofluoric acid (ρ1.15g/mL).
3.5 perchloric acid (ρ1.67g/mL).
3.6 Ammonia (ρ0.90g/mL).
3.7 phosphoric acid (ρ1.69g/mL).
3.8 sulfate (ρ1.84g/mL).
3.9 Hydrogen peroxide (ρ1.10g/mL).
3.10 HCl (1 + 1).
3.11 HCl (1 + 9).
3.12 ammonia (1 + 1).
3.13 ammonia (19 + 1).
3.14 diphenylamine sodium solution (2g/L).
3.15 potassium dichromate solution (1g/L).
3.16 sodium tungstate (Na2WO4 · H2O) solution (250g/L). Weigh 25g sodium tungstate soluble in water, 5mL phosphoric acid (3.7), washed with water
Diluted to 100mL.
3.17 titanium trichloride Solution A. Pipette 25mL solution of titanium trichloride (150g/L ~ 200g/L), diluted to 100mL with hydrochloric acid (3.10),
Mix well.
A solution of titanium trichloride, 3.18 B. Pipette 10mL solution of titanium trichloride (150g/L ~ 200g/L), diluted to 200mL with hydrochloric acid (3.11),
Mix well.
3.19 sulfuric acid - phosphoric acid mixed. A 150mL sulfuric acid (3.8) while stirring the water injection 700mL, 150mL added phosphoric acid (3.7),
Mix well.
3.20 ferrous ammonium sulfate solution (20g/L). Weigh 2g ferrous ammonium sulfate, water and 5mL of sulfuric acid (3.8), was dissolved (such as the solution is cloudy with a filter
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