GB/T 223.20-1994 English Version, 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)

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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 Email:
Language:	English	File Format:	PDF
Word Count:	2000 words	Price(USD):	110.0 remind me the price change Email:
Implemented on:	1994-10-1	Delivery:	via email in 1 business day

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

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

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
Status	valid
Language	English
File Format	PDF
Word Count	2000 words
Price(USD)	110.0
Implemented on	1994-10-1
Delivery	via email in 1 business day

Detail of GB/T 223.20-1994

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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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Keywords:
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