FeSiBa1: Ba1-3% Ca1-2% Si 70-72% Al 1-2% 2: Ba2-4% Ca1-2% Si 65-70% Al 1-2% 3: Ba4-6% Ca1-2% Si 65-70% Al 1-2% 4: Ba10-12% Ca1-2% Si 65-70% Al 1-2% standard size:0.1-0.4mm; 0.2-0.7mm; 1-3mm; 3-6mm;1-1

FeSiMg 1: Re 0.8-1.2% Mg 5.0-5.5% Ca 1.0-2.0% Si 43-48% Al

FeSiSrSr 0.6-1.0% Ca