95.99 Withdrawal of Standard Dec 10, 2013
ISO
ISO/TC 132 Ferroalloys
Technical Report
77.100 Ferroalloys
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.
WITHDRAWN
ISO/TR 7955:1982
95.99
Withdrawal of Standard
Dec 10, 2013