JB/T 6237.5-2008Methods for chemical analysis of silver powder for contact materials - Part 5: Determination of sodium content by flame atomic absorption spectrometry (English PDF)
电触头材料用银粉化学分析方法 第5部分：火焰原子吸收光谱法测定钠量
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
March 12, 2008
Implementation date
September 1, 2008
Scope
JB/T 6237.5-2008 is the English-translated version of 电触头材料用银粉化学分析方法 第5部分：火焰原子吸收光谱法测定钠量.
JB/T 6237.5-2008 is a recommended Chinese machinery industry standard forming the fifth part of JB/T 6237 on the chemical analysis of the silver powder used in electrical contact materials.
It prescribes the determination of the sodium content of that silver powder by flame atomic absorption spectrometry. The method applies to the sodium content of silver for contact materials and covers a determination range of 0.002 % to 0.020 %.
Classified K14 in the Chinese system and 29.120.20 in the international one. It quotes GB/T 7728-1987.
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Document preview — JB/T 6237.5-2008
National Standard of the People's Republic of China
- ICS
- 29.120.20
- Replacing
- JB/T 6237.6-1992
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
1 Foreword
JB/T 6237.5-2008 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 12 March 2008 and has been in force since 1 September 2008.
It is one of 10 parts of the JB/T 6237 series.
2 Scope
This standard is a recommended Chinese machinery industry standard forming the fifth part of JB/T 6237 on the chemical analysis of the silver powder used in electrical contact materials. It prescribes the determination of the sodium content of that silver powder by flame atomic absorption spectrometry. The method applies to the sodium content of silver for contact materials and covers a determination range of 0.002 % to 0.020 %. Classified K14 in the Chinese system and 29.120.20 in the international one. It quotes GB/T 7728-1987.
3 Normative references
JB/T 6237.5-2008 cites the following standards, which apply in full or in part through the references made to them in its clauses.
GB/T 7728-1987
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 6237.1-2008 — Part 1: Determination of silver content
JB/T 6237.2-2008 — Part 2: Determination of copper content by cuprizone spectrophotometry
JB/T 6237.3-2008 — Part 3: Determination of iron content by phenanthroline spectrophotometry
JB/T 6237.4-2008 — Part 4: Determination of nickel content by flame atomic absorption spectrometry
JB/T 6237.6-2008 — Part 6: Determination of magnesium content by flame atomic absorption spectrometry
JB/T 6237.7-2008 — Part 7: Determination of moisture content by gravimetry
JB/T 6237.8-2008 — Part 8: Determination of pH value of aqueous solution
JB/T 6237.9-2008 — Part 9: Determination of nitrate content by benzidine visual colorimetry
JB/T 6237.10-2008 — Part 10: Determination of silver chloride content by gravimetry
6 Classification and status
International classification (ICS): 29.120.20
Chinese Standard Classification (CCS): K 14
Prefix JB/T: recommended standard.
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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
Similar standards
Editions of JB/T 6237.5
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 6237.5-2008 | Methods for chemical analysis of silver powder for contact materials - Part 5: Determination of sodium content by flame atomic absorption spectrometry | current edition | Current |
| JB/T 6237.6-1992 | Methods for chemical analysis of silver powder for contact materials - Part 5: Determination of sodium content by flame atomic absorption spectrometry | previous edition | Superseded |
This page sells the current edition, JB/T 6237.5-2008. Earlier editions are listed for reference only.
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Related Standards
GB/T 7728-1987 — Chemical analysis of metallurgical products. General rule for flame atomic absorption spectrometric methods
JB/T 6237.6-2008 — Methods for chemical analysis of silver powder for contact materials - Part 6: Determination of magnesium content by flame atomic absorption spectrometry
JB/T 6237.4-1992 — Electrical contact with the chemical analysis of silver spectrophotometric determination of nickel content Methyl 2- (5-bromo-2-pyridyl azo) -5 diethylaminophenol spectrophotometric
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JB/T 6237.5-2008
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