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GB/T 5121.21-2008 English PDF

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Q: Should I purchase the latest version GB/T 5121.21-2008?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5121.21-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 5121.21-2008: Methods for chemical analysis of copper and copper alloys -- Part 21: Determination of titanium content
Status: Valid

GB/T 5121.21: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 5121.21-2008	169	Add to Cart	3 days	Methods for chemical analysis of copper and copper alloys -- Part 21: Determination of titanium content	Valid
GB/T 5121.21-1996	199	Add to Cart	2 days	Copper and copperr alloys--Determination of titanium content	Obsolete

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Basic data

Standard ID: GB/T 5121.21-2008 (GB/T5121.21-2008)
Description (Translated English): Methods for chemical analysis of copper and copper alloys -- Part 21: Determination of titanium content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.30
Word Count Estimation: 7,799
Date of Issue: 2008-06-17
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 5121.21-1996
Regulation (derived from): National Standard Approval Announcement 2008 No.10 (Total No.123)
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 method for determination of copper and copper alloy titanium content. This section applies to the determination of copper and copper alloy titanium content. Measuring range: 0. 050% to 0. 30%.

GB/T 5121.21-2008: Methods for chemical analysis of copper and copper alloys -- Part 21: Determination of titanium content

---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 copper and copper alloys Part 21. Determination of titanaum content ICS 77.120.30 H13 National Standards of People's Republic of China Replacing GB/T 5121.21-1996 Copper and copper alloys - Part 21. Determination of titanium content Posted 2008-06-17 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 5121 "Copper and copper alloy chemical analysis method" a total of 27 sections. --- Part 1. Determination of copper content; --- Part 2. Determination of phosphorus content; --- Part 3. Determination of lead content; --- Part 4. Carbon, Determination of sulfur content; --- Part 5. Determination of nickel content; --- Part 6. Determination of bismuth content; --- Part 7. Determination of arsenic content; --- Part 8. Determination of oxygen content; --- Part 9. Determination of iron content; --- Part 10. Determination of tin content; --- Part 11. Determination of zinc content; --- Part 12. Determination of antimony content; --- Part 13. Determination of aluminum content; --- Part 14. Determination of manganese content; --- Part 15. Determination of cobalt content; --- Part 16. Determination of chromium content; --- Part 17. Determination of beryllium content; --- Part 18. Determination of magnesium content; --- Part 19. Determination of silver content; --- Part 20. Determination of zirconium content; --- Part 21. Determination of titanium content; --- Part 22. Determination of cadmium content; --- Part 23. Determination of silicon content; --- Part 24. selenium, tellurium content was measured; --- Part 25. Determination of boron content; --- Part 26. Determination of mercury content; --- Part 27. Inductively coupled plasma atomic emission spectrometry. This is Part 21. This Part replaces GB/T 5121.21-1996 "Copper and copper alloys - Determination of titanium content." This section compared with the GB/T 5121.21-1996, the main changes are as follows. --- Omitted "reference standard" one; --- Original standard text format has been revised; --- Supplementary terms of quality assurance and control, increased precision terms. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This section Chinalco Luoyang Copper Co., Ltd., Beijing General Research Institute of Mining and Metallurgy, China Nonferrous Metals Industry is responsible Institute of Standards Metrology and Quality Drafted. This section Chinalco Luoyang Copper Co. drafted. This part by the Beijing Nonferrous Metal Research Institute, Beijing General Research Institute of Mining and Metallurgy participated in the drafting. The main drafters of this section. Yaoqiao Ping, Ji Haifeng, former Huai Bao. This part certifier. Tong Jian, Liu Chunfeng, Tong Ling, Zhang Lianxiang. This part of the standard replaces the previous editions are. --- GB/T 5121.21-1996. Copper and copper alloys - Part 21. Determination of titanium content

1 Scope

This section specifies the determination of copper and copper alloys in the titanium content. This section applies to the determination of copper and copper alloys in the titanium content. Measurement range. 0.050% to 0.30%.

2 principle of the method

Sample was dissolved in nitric acid, sulfuric acid solution, the hydrogen peroxide is added to form a yellow complex with the titanium so that, at the wavelength of the spectrophotometer Absorbance was measured at 410nm.

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 nitric acid (1 + 1). 3.2 sulfate (1 + 1). 3.3 Hydrogen peroxide (1 + 9). 3.4 Titanium standard solution. Weigh 0.1666g previously burned by 950 ℃ to constant weight and titanium dioxide (excellent pure) after cooling in a dryer, In a dry 250mL beaker, add 30mL sulfuric acid (ρ1.84g/mL), heated to dissolve, when close to dissolve completely, adding 5g Solubilization of ammonium sulfate, dissolved completely, and cooled to room temperature. Moved into 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL Containing 100μg titanium.

4 Instrument

Spectrophotometer.

5 Sample

Thickness of less than 1mm debris. Step 6 Analysis 6.1 Sample Weigh 0.400g sample (5). Accurate to 0.0001g. 6.2 Determination of the number of Independent secondary measurement averaged. 6.3 blank test 6.3.1 along with sample blank test with water as a reference measuring absorbance. 6.3.2 Weigh a sample, but without addition of hydrogen peroxide, other steps according to analysis, the solution for the sample solution as reference solution. 6.4 Determination 6.4.1 The sample (6.1) was placed in 150mL beaker, was added 5mL of nitric acid (3.1), cover sheet pan, heated to dissolve completely, in addition to boil To nitrogen oxides. Washed with a little water table dish and cup wall. Added 10mL sulfuric acid (3.2), low temperature evaporation to take the white smoke of sulfur trioxide, remove Cooled, washed with water and dish table Beibi. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 5121.21-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 5121.21-2008_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 GB/T 5121.21-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 5121.21-2008_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. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 5121.21-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5121.21-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.