YS/T 656-2007 Designation and composition of wrought niobium and niobium alloy

YS/T 656-2015 Designation and composition of wrought niobium and niobium alloy

GB/T 15076.10-1994 Methods for chemical analysis of tantalum and niobium—Determination of iron, nickel, chromium, titanium, zirconium, aluminum and manganese contents in niobium GB/T 15076.11-1994 Methods for chemical analysis of tantalum and niobium—Determination of arsenic antimony、lead、tinand bismuth contents in niobium GB/T 15076.1-1994 Methods for chemical analysis of tantalum and niobium—Determination of tantalum content in niobium GB/T 15076.12-1994 Methods for chemical analysis of tantalum and niobium—Determination of carbon content GB/T 15076.13-1994 Methods for chemical analysis of tantalum and niobium—Determination of nitrogen content in tantalum GB/T 15076.14-1994 Methods for chemical analysis of tantalum and niobium—Determination of oxygen content GB/T 15076.15-1994 Methods for chemical analysis of tantalum and niobium—Determination of hydrogen content GB/T 15076.2-1994 Methods for chemical analysis of tantalum and niobium—Determination of niobium content in tantalum GB/T 15076.3-1994 Methods for chemical analysis of tantalum and niobium—Determination of copper content GB/T 15076.4-1994 Methods for chemical analysis of tantalum and niobium—Determination of iron content GB/T 15076.5-1994 Methods for chemical analysis of tantalum and niobium—Determination of molybdenum and tungsten contents GB/T 15076.6-1994 Methods for chemical analysis of tantalum and niobium—Determination of silicon content in tantalum GB/T 15076.7-1994 Methods for chemical analysis of tantalum and niobium—Determination of phospherus content in niobium GB/T 15076.8-1994 Methods for chemical analysis of tantalum and niobium—Determination of sulphur content in niobium GB/T 15076.9-1994 Methods for chemical analysis of tantalum and niobium—Determination of iron, chromium, nickel, manganese, titanium, aluminum, copper and zirconium contents in tantalum GB/T 15076.12-2008 Methods for chemical analysis of tantalum and niobium—Determination of phosphorus content in tantalum GB/T 15076.14-2008 Methods for chemical analysis of tantalum and niobium—Determination of oxygen content GB/T 15076.15-2008 Methods for chemical analysis of tantalum and niobium—Determination of hydrogen content GB/T 15076.16-2008 Methods for chemical analysis of tantalum and niobium—Determination of sodium and potassium contents GB/T 15076.8-2008 Methods for chemical analysis of tantalum and niobium—Determination of carbon and sulphur contents GB/T 15076.9-2008 Methods for chemical analysis of tantalum and niobium—Determination of iron,chromium,nickel,manganese,titanium,aluminum,copper,tin,lead and zirconium contents in tantalum GB/T 15076.1-2017 Methods for chemical analysis of tantalum and niobium—Part 1:Determination of tantalum content in niobium—Inductively coupled plasma atomic emission spectrometry GB/T 15076.13-2017 Methods for chemical analysis of tantalum and niobium—Part 13:Determination of nitrogen content—Inert gas fusion thermal conductivity method GB/T 15076.5-2017 Methods for chemical analysis of tantalum and niobium—Part 5:Determination of molybdenum and tungsten contents—Inductively coupled plasma atomic emission spectrometry GB/T 15076.3-2019 Methods for chemical analysis of tantalum and niobium—Part 3:Determination of copper content—Flame atomic absorption spectrometry GB/T 15076.10-2019 Methods for chemical analysis of tantalum and niobium—Part 10:Determination of iron,nickel,chromium,titanium,zirconium,aluminum and manganese contents in niobium—Direct current arc atomic emission spectrometry GB/T 15076.2-2019 Methods for chemical analysis of tantalum and niobium—Part 2:Determination of niobium content in tantalum—Inductively coupled plasma atomic emission spectrometry and stratography gravimetry GB/T 15076.11-2020 Methods for chemical analysis of tantalum and niobium—Part 11:Determination of arsenic,antimony,lead,tin and bismuth contents in niobium—Direct current arc atomic emission spectrometry GB/T 15076.4-2020 Methods for chemical analysis of tantalum and niobium—Part 4:Determination of iron content—1,10-Phenanthroline spectrophotometry GB/T 15076.6-2020 Methods for chemical analysis of tantalum and niobium—Part 6:Determination of silicon content—Inductively coupled plasma atomic emission spectrometry GB/T 15076.7-2020 Methods for chemical analysis of tantalum and niobium—Part 7:Determination of phospherus content in niobium—4-Formyloxy-pentyl ketone-[2]extraction separation phosphomolybdate blue spectrophotometry and inductively coupled plasma atomic emission spectrometry