Lanthanum-iron alloy

The invention discloses a lanthanum-iron alloy. The lanthanum-iron alloy comprises the following components including, by weight, 10.04%-50.05% of lanthanum, 59.97%-95.06% of lanthanum and the balance of iron and inevitable impurities with the total amount of less than 0.5%, wherein the content of oxygen is less than or equal to 0.01%, the content of carbon is less than or equal to 0.01%, the content of phosphorus is less than or equal to 0.01%, and the content of sulfur is less than or equal to 0.005%. Compared with a rare earth iron alloy prepared by a consumable cathode method, the lanthanum-iron alloy has the advantages that the components are more uniform, and the lanthanum content can be accurately controlled. 本发明公开了一种镧铁合金，镧的含量为10.04～50.05wt％以及59.97～95.06wt％，余量是铁以及总量小于0.5wt％的不可避免的杂质，其中氧≤0.01wt％，碳≤0.01wt％，磷≤0.01wt％，硫≤0.005wt％。本发明的镧铁合金，与自耗阴极法制备的稀土铁合金相比，本发明得到的镧铁合金成分更加均匀，镧含量可精确控制。