GB/T 20255.2-2006 Methods for chemical analysis of hardmetals. Determination of cobalt,iron,manaanese and nickel contents. Flame atomic absorption spectrometric method (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 20255.2-2006
Scope
This part specifies the determination of carbides of chromium, niobium, tantalum, titanium, tungsten and vanadium, mixtures of the above carbides and bonding metals, and cemented carbides (including coated cemented carbides with completely removed coatings) by flame atomic absorption spectrometry. ) Determination of the amount of cobalt, iron, manganese and nickel. This section applies to carbides of chromium, niobium, tantalum, titanium, tungsten, vanadium, mixtures of the above carbides and bonding metals, and cobalt, iron, Determination of manganese and nickel content. Measuring range: 0.01% to 0.05%.
GB/T 20255.2-2006 history
2006GB/T 20255.2-2006 Methods for chemical analysis of hardmetals. Determination of cobalt,iron,manaanese and nickel contents. Flame atomic absorption spectrometric method