GB 223.37-1989 English Version, GB 223.37-1989 Methods for Chemical Analysis of Iron, Steel and Alloy - the Indophenol Blue Photometric Method for the Determination of Nitrogen Content after Distillation Separation (English Version)

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GB 223.37-1989 Methods for Chemical Analysis of Iron, Steel and Alloy - the Indophenol Blue Photometric Method for the Determination of Nitrogen Content after Distillation Separation (English Version)
Standard No.:	GB 223.37-1989	Status:	superseded remind me the status change Email:
Language:	English	File Format:	PDF
Word Count:	3000 words	Price(USD):	60.0 remind me the price change Email:
Implemented on:	1990-7-1	Delivery:	via email in 1 business day

Standard No.:	GB 223.37-1989
English Name:	Methods for Chemical Analysis of Iron, Steel and Alloy - the Indophenol Blue Photometric Method for the Determination of Nitrogen Content after Distillation Separation
Chinese Name:	钢铁及合金化学分析方法蒸馏分离-靛酚蓝光度法测定氮量
Chinese Classification:	H11 Steel and iron alloy analysis method
Professional Classification:	GB National Standard
Issued by:	the Ministry of Metallurgical Industry
Issued on:	1989-02-21
Implemented on:	1990-7-1
Status:	superseded
Superseded by:	GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
Superseded on:	2021-1-1
Superseding:	GB 223.37-1985
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	60.0
Delivery:	via email in 1 business day

GB 223.37-1989 is referred in:

* GB 6654-1996 Steel Plates for Pressure Vessels
* GB/T 9711.2-1999 Petroleum and natural gas industries-Steel pipe for pipelines-Technical delivery conditions-Part 2:Pipes of requirements class B
* GB 713-1997 Steel Plates for Boilers
*GB/T 983-1995 Stainless steel covered electrodes

Standard

GB 223.37-1989 Methods for Chemical Analysis of Iron, Steel and Alloy - the Indophenol Blue Photometric Method for the Determination of Nitrogen Content after Distillation Separation (English Version)
Standard No.	GB 223.37-1989
Status	superseded
Language	English
File Format	PDF
Word Count	3000 words
Price(USD)	60.0
Implemented on	1990-7-1
Delivery	via email in 1 business day

Detail of GB 223.37-1989

Standard No.

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Introduction of GB 223.37-1989

This standard specifies the indophenol blue photometric method for the determination of nitrogen content after distillation separation. This standard is applicable to the determination of nitrogen content in pure iron, carbon steel, alloy steel, high temperature alloy and precious alloy and is not applicable the determination of nitrogen content in silicon steel remolded without aluminum and its sectional materials. Determination range: 0.0010%~0.050%.

Contents of GB 223.37-1989

1 Subject and Aspects Covered 1 2 Method Summaries 1 3 Reagents 1 4 Instruments 2 5 Analysis Procedures 3 6 Calculation (Expression) of Analytic Result 5 7 Precision 5 Appendix A Source Data of Common Precision Test 6

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