外观：***金属粉末应用：铼元素标样；各类高温合金的铼元素添加剂；各类铼部件的基料粒度：费氏平均粒度平均粒径：1-100nm,可根据客户要求定制。执行标准：YS/T1017-2015杂质含量（%，≤）元素ElementRe-4N级Re-4NGradeRe-5N级Re-5NGrade元素ElementRe-4N级Re-4NGradeRe-5N级Re-5NGradeNa0.00050.0001Ni0.00010.00001Mg0.00010.00005Cu0.00010.00001Al0.00010.00005Zn0.00050.00001Si0.00050.0001As0.00010.00001P0.00050.0001Zr0.00010.00001K0.00050.0001Mo0.00050.0001Ca0.00050.00005Cd0.00010.00001Ti0.00010.00001Sn0.00010.00001V0.00010.00001Sb0.00010.00001Cr0.00010.00001Ta0.00010.00001Mn0.00010.00001W0.00050.00005Fe0.00050.0005Pb0.00010.00001Co0.00010.00001Bi0.00010.00001)