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GB/T 223.20-1994   Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content (English Version)
Standard No.: GB/T 223.20-1994 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 2000 words Price(USD):110.0 remind me the price change

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Implemented on:1994-10-1 Delivery: via email in 1 business day
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Standard No.: GB/T 223.20-1994
English Name: Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content
Chinese Name: 钢铁及合金化学分析方法 电位滴定法测定钴量
Chinese Classification: H11    Steel and iron alloy analysis method
Professional Classification: GB    National Standard
Issued by: AQSIQ
Issued on: 1994-1-17
Implemented on: 1994-10-1
Status: valid
Superseding:GB 223.20-1982 Chemical analysis of iron, steel and alloy--The determination of cobalt by the potentiometric titration method
Language: English
File Format: PDF
Word Count: 2000 words
Price(USD): 110.0
Delivery: via email in 1 business day
1 Subject Content and Application Scope This Standard specifies a method for the determination of the cobalt content using a potentiometric titration method. This Standard is applicable to the determination of cobalt content in alloy steel, high temperature alloy and precious alloy. Determination range: above 3.00%. 2 Principle Cobalt is oxidized using potassium ferricyanide in the ammoniacal medium in the presence of ammonium citrate and excessive potassium ferricyanide is subject to back titration with cobalt sulfate standard solution. No more than 30 mg of chromium, 5mg of copper and 3mg of manganese in the titrated solution has no influence on its determination.
GB/T 223.20-1994 is referred in:
* JB/T 4385.1-1999 General specifications for open die forgings on hammer
* NB/T 47018.5-2011 Technical permission of welding materials for pressure equipment - Part 5: Stainless steel strip electrodes and fluxes for overlay welding
* GB/T 19345-2003 Amorphous and nanocrystalline soft magnetic alloy strips
* GB/T 25825-2010 Rolls for hot strip mill and plate mill
* GB/T 9943-2008 High-speed tool steels
*GB/T 14986-2008 High saturation magnetic induction magnetic compensate alloys depending on temperature variation corrosion-resisting iron-aluminium Permanent permeability soft magneticalloys
*YB/T 5241-2014 Iron-nickel and iron-nickel-cobalt alloys with low expansion
*YB/T 5231-2014 Sealed iron-nickel-cobalt alloys with pe rmanent expansion
*GB/T 26025-2010 Specifications for copper mould plates of continuous casting
*GB/T 14986.3-2018 Soft magnetic alloys—Part 3:Iron-cobalt alloys
*GB/T 32286.1-2015 Soft magnetic alloys—Part 1:Nickel-iron alloys
*GB/T 1503-2008 Cast steel rolls
*YB/T 5092-2016 Stainless steel wires for welding
Code of China
Standard
GB/T 223.20-1994  Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content (English Version)
Standard No.GB/T 223.20-1994
Statusvalid
LanguageEnglish
File FormatPDF
Word Count2000 words
Price(USD)110.0
Implemented on1994-10-1
Deliveryvia email in 1 business day
Detail of GB/T 223.20-1994
Standard No.
GB/T 223.20-1994
English Name
Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content
Chinese Name
钢铁及合金化学分析方法 电位滴定法测定钴量
Chinese Classification
H11
Professional Classification
GB
ICS Classification
Issued by
AQSIQ
Issued on
1994-1-17
Implemented on
1994-10-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB 223.20-1982 Chemical analysis of iron, steel and alloy--The determination of cobalt by the potentiometric titration method
Language
English
File Format
PDF
Word Count
2000 words
Price(USD)
110.0
Keywords
GB/T 223.20-1994, GB 223.20-1994, GBT 223.20-1994, GB/T223.20-1994, GB/T 223.20, GB/T223.20, GB223.20-1994, GB 223.20, GB223.20, GBT223.20-1994, GBT 223.20, GBT223.20
Introduction of GB/T 223.20-1994
1 Subject Content and Application Scope This Standard specifies a method for the determination of the cobalt content using a potentiometric titration method. This Standard is applicable to the determination of cobalt content in alloy steel, high temperature alloy and precious alloy. Determination range: above 3.00%. 2 Principle Cobalt is oxidized using potassium ferricyanide in the ammoniacal medium in the presence of ammonium citrate and excessive potassium ferricyanide is subject to back titration with cobalt sulfate standard solution. No more than 30 mg of chromium, 5mg of copper and 3mg of manganese in the titrated solution has no influence on its determination.
Contents of GB/T 223.20-1994
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