Iron powder produced by reducing mill scale (iron oxide) with coke (carbon material), followed by heat treatment in a hydrogen atmosphere. Has a porous structure.

Iron powder produced by atomizing and cooling molten steel with high pressure water, followed by heat treatment in a hydrogen atmosphere. Not porous and has higher purity than reduced iron powder.

Iron powder produced by atomizing alloyed molten steel. Has a uniform alloy composition in particles.

Alloyed powder produced by partially alloying an alloyed powder, which is made to adhere around pure iron powder. Because the interior consists of soft pure iron powder, this type has high compressibility.

Premixed powder consisting of a mixture of a pure iron powder or alloyed steel powder and additives. The powder can be compacted in this condition.

JFE’s segregation-free treatment causes graphite powder or copper powder to adhere to the iron powder, preventing scattering of additives during handling. Contributes to a clean work environment, and enables production of sintered parts with minimal segregation of additives.