JB/T 7520.2-2017Methods for chemical analysis of copper base brazing filler metals - Part 2: Determination of silver content (English PDF)
铜基钎料化学分析方法 第2部分：银量测定
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
November 7, 2017
Implementation date
April 1, 2018
Scope
JB/T 7520.2-2017 is the English-translated version of 铜基钎料化学分析方法 第2部分：银量测定.
JB/T 7520.2-2017 is the second part of the Chinese machinery industry series on methods of chemical analysis for copper base brazing filler metals, recommended in status, and it determines the silver content.
Its clauses set out the scope, the normative references, the general rules, the principle on which the determination rests, the reagents and equipment required, the test procedure, the handling of the test data and the permissible difference between results.
It quotes GB/T 6682, GB/T 12806, GB/T 12808, GB/T 12809 and GB/T 12810. It supersedes JB/T 7520.2-1994. The classifications carried are J33 and 25.160.20.
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Document preview — JB/T 7520.2-2017
National Standard of the People's Republic of China
- ICS
- 25.160.20
- Replacing
- JB/T 7520.2-1994
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
1 Foreword
JB/T 7520.2-2017 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 7 November 2017 and has been in force since 1 April 2018.
It replaces the earlier edition JB/T 7520.2-1994.
It is one of 11 parts of the JB/T 7520 series.
2 Scope
This standard is the second part of the Chinese machinery industry series on methods of chemical analysis for copper base brazing filler metals, recommended in status, and it determines the silver content. Its clauses set out the scope, the normative references, the general rules, the principle on which the determination rests, the reagents and equipment required, the test procedure, the handling of the test data and the permissible difference between results. It quotes GB/T 6682, GB/T 12806, GB/T 12808, GB/T 12809 and GB/T 12810. It supersedes JB/T 7520.2-1994. The classifications carried are J33 and 25.160.20.
3 Normative references
JB/T 7520.2-2017 cites the following standards, which apply in full or in part through the references made to them in its clauses.
GB/T 6682
GB/T 12806
GB/T 12808
GB/T 12809
GB/T 12810
4 About this standard
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
English translation: about 15 pages
5 Related standards
Other parts of this standard:
JB/T 7520.1-1994 — Methods for chemical analysis of copper-phosphorus brazing filler metals - Determination of copper content by EDTA volumetric method
JB/T 7520.1-2017 — Part 1: Determination of copper content
JB/T 7520.3-1994 — Methods for chemical analysis of copper-phosphorus brazing filler metals - Determination of phosphorus content by vanadomolybdate photometric method
JB/T 7520.3-2017 — Part 3: Determination of phosphorus content
JB/T 7520.4-1994 — Methods for chemical analysis of copper-phosphorus brazing filler metals - Determination of antimony content by potassium iodide photometric method
JB/T 7520.4-2017 — Methods for chemical analysis of copper-based brazing filler metals - Part 4: Determination of antimony content
JB/T 7520.5-1994 — Methods for chemical analysis of copper-phosphorus brazing filler metals - Determination of tin content by hypophosphite reduction volumetric method
JB/T 7520.5-2017 — Part 5: Determination of tin content
JB/T 7520.6-1994 — Methods for chemical analysis of copper-phosphorus brazing filler metals - Determination of nickel content by dimethylglyoxime photometric method
JB/T 7520.6-2017 — Part 6: Determination of nickel content
Other editions:
JB/T 7520.2-1994 (earlier edition)
6 Classification and status
International classification (ICS): 25.160.20
Prefix JB/T: recommended standard.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 6682Water for analytical laboratory use - Specification and test methods
- GB/T 12806Laboratory glassware -- One-mark volumetric flasks
- GB/T 12808Laboratory glassware - One mark pipettes
- GB/T 12809Laboratory glassware -- Principles of design and construction of volumetric glassware
- GB/T 12810Laboratory glassware - Capacity methods testing and use of volumetric instruments
Similar standards
Editions of JB/T 7520.2
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 7520.2-2017 | Methods for chemical analysis of copper base brazing filler metals - Part 2: Determination of silver content | current edition | Current |
| JB/T 7520.2-1994 | Methods for chemical analysis of copper base brazing filler metals - Part 2: Determination of silver content | previous edition | Superseded |
This page sells the current edition, JB/T 7520.2-2017. Earlier editions are listed for reference only.
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Related Standards
GB/T 12806-1991 — Laboratory glassware-one-mark volumetric flasks
GB/T 12806-2011 — Laboratory glassware -- One-mark volumetric flasks
GB/T 12808-1991 — Laboratory glassware. One-mark pipettes
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