GB/T 4137-2015 Rare earth ferrosilicon alloy

GB/T 4137-2004 Rare earth ferrosilicon alloy

GB/T 4137-2024 Rare earth ferrosilicon alloy

GB/T 3650-1995 The general rules for inspection、 packing、storing transportation、marking and certification of ferroalloy GB/T 3650-2008 The general rules for inspection,packing,storing,transportation,marking and certification of ferroalloy GB/T 4010-1994 Ferroalloys—Sampling and preparation of samples for chemical analysis GB/T 4010-2015 Ferroallys sampling and preparation of samples for chemical analysis GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 13247-1991 Ferroalloys—Sampling and testing methods for determination of grain size GB/T 13247-2019 Methods for sampling and testing the grain size of ferroalloys products GB/T 16477.1-1996 Methods for chemical analysis of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Determination of total rare earth content GB/T 16477.1-2010 Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Part 1:Determination of total rare earth content GB/T 16477.1-2024 Chemical analysis methods of silicon-based composite rare earth ferroalloy and RE-Mg ferro-silicon alloy—Part 1:Determination of total rare earth and fifteen rare earth elements contents GB/T 16477.2-1996 Methods for chemical analysis of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Determination of calcium, magnesium, and manganese contents GB/T 16477.2-2010 Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Part 2:Determination of calcium,magnesium and manganese contents—Inductively coupled plasma atomic emission spectrometry GB/T 16477.3-1996 Methods for chemical analysis of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Determination of magnesia content GB/T 16477.3-2010 Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Part 3:Determination of magnesia content—Inductively coupled plasma atomic emission spectrometry GB/T 16477.4-1996 Methods for chemical analysis of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Determination of silica content GB/T 16477.4-2010 Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Part 4:Determination of silicon content GB/T 16477.5-1996 Methods for chemical analysis of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Determination of titanium content GB/T 16477.5-2010 Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Part 5:Determination of titanium content—Inductively coupled plasma atomic emission spectrometry GB/T 17803-1999 Designation system for rare earth products GB/T 17803-2015 Designation system for rare earth products GB/T 24194-2009 Ferrosilicon—Determination of aluminium,calcium,manganese,chromium,titanium,copper,phosphorus and nickel content—Inductively coupled plasma atomic emission spectrometric method GB/T 24194-2024 Ferrosilicon—Determination of multi-element contents—Inductively coupled plasma atomic emission spectrometric method