Norm

ISO/TR 7955:1982 en

Ferroniobium - Determination of niobium content - Gravimetric method

  • Deze norm is ingetrokken sinds 24-12-2013

73,12

Over deze norm

Status Ingetrokken
Aantal pagina's 14
Commissie Chemische analyse van ijzer en staal
Gepubliceerd op 01-12-1982
Taal Engels
Specifies a photometric method for the determination of the titanium content (annex A), a gravimetric method for the determination of tantalum contents greater than 1 % (m/m) (annex B) and a photometric method for the determination of tantalum contents less than 1 % (m/m) (annex C). The methods are applicable to ferroniobium having niobium contents between 40 and 75 % (m/m), tantalum contents between 0,25 and 8,0 % (m/m) and titanium contents between 0,05 and 5,0 % (m/m). Interference may arise if bismuth or trivalent antimony are present.

Details

ICS-code 77.100
Nederlandse titel Ferroniobium - Determination of niobium content - Gravimetric method
Engelse titel Ferroniobium - Determination of niobium content - Gravimetric method

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