高纯钨粉技术规格见下表：ChemicalElementsTypeHW5NHW6NW（wt%）≥99.999％≥99.9999％NVRElementsMaximumContent(ppm)TotalNVR≤10ppm≤1ppmLi0.050.01Na0.50.5K0.10.07U0.00080.0005Th0.00080.0005Fe、Cr0.50.3Mo、Re、Ba10.5B,Pb,Sb,Be,Bi,Cd,Ge,Nb,Pt,Mg,Zr,Au,In,Ga,Ag0.10.1P,As,Se,Ca,Si,Cu,Ni,Al,Zn,Sn,Mn,Co,Hg,V0.20.2Othertraceelement0.10.1GasElementMaximumContent(ppm)O500500N5050C3030S2510H5050Fsss:1.9~3.5µm所有粉末过200目筛)