Fe based (Fe<TEX>$_{68.2}$</TEX>C<TEX>$_{5.9}$</TEX>Si<TEX>$_{3.5}$</TEX>B<TEX>$_{6.7}$</TEX>P<TEX>$_{9.6}$</TEX>Cr<TEX>$_{2.1}$</TEX>Mo<TEX>$_{2.0}$</TEX>Al<TEX>$_{2.0}$</TEX>) amorphous powder, which is a composition of iron blast cast slag, were produced by a gas atomization process, and sequently mixed with ductile Cu powder by a mechanical ball milling process. The Fe-based amorphous powders and the Fe-Cu composite powders were compacted by a spark plasma sintering (SPS) process. Densification of the Fe amorphous-Cu composited powders by spark plasma sintering of was occurred through a plastic deformation of the each amorphous powder and Cu phase. The SPS samples milled by AGO-2 under 500 rpm had the best homogeneity of Cu phase and showed the smallest Cu pool size. Micro-Vickers hardness of the as-SPSed specimens was changed with the milling processes.