Standard No.:	GB/T 5121.8-2008
English Name:	Methods for chemical analysis of copper and copper alloys—Part 8:Determination of oxygen content
Chinese Name:	铜及铜合金化学分析方法 第8部分：氧含量的测定
Chinese Classification:	H13    Heavy metals and their alloys analysis method
Professional Classification:	GB    National Standard
ICS Classification:	77.120.30 77.120.30    Copper and copper alloys 77.120.30
Issued by:	AQSIQ; SAC
Issued on:	2008-06-17
Implemented on:	2008-12-1
Status:	superseded
Superseded by:	GB/T 5121.8-2024 Methods for chemical analysis of copper and copper alloys—Part 8 : Determination of oxygen, nitrogen and hydrogen contents
Superseded on:	2024-11-1
Abolished on:	2024-11-01
Superseding:	GB/T 5121.8-1996 Copper and copper alloys-Determination of oxygen content
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	110.0
Delivery:	via email in 1 business day

1 Scope This part specifies the determination methods for oxygen content in copper and copper alloys. This part is applicable to the determination of oxygen content in copper and copper alloys. The determination range is 0.00030% ~ 0.11%. 2 Principle Put the prepared test portion in to a carbon crucible that had been degassed at high temperature, and heat the portion until melting under helium (or argon) so that the oxygen in such portion is separated out of the metal as carbon monoxide or is separated out, passing through a 400℃ rare earth copper oxide furnace along with the helium (argon) for conversion, as carbon dioxide. Import into an infrared detector for the determination and the mass of oxygen is automatically indicated by the computer.

Foreword I 1 Scope 1 2 Principle 1 3 Reagents and Materials 1 4 Apparatus 2 5 Test Sample 3 6 Procedures 3 7 Calculation of Analysis Results 4 8 Precision 4 9 Quality Assurance and Control 5