元素规格铌12-18%钽28-32%铝余量铁0.30% max.硅0.30% max.碳0.15% max.氧0.15% max.粒度:0.25mm~6.35mm &nbs……
元素规格铌5-9%钽43-47%铝余量铁0.30% max.硅0.30% max.碳0.15% max.氧0.15% max.粒度:0.25mm~6.35mm ……