In the powder metallurgy industry, the production of reduced iron powder and products accounts for a large proportion. The variety, quality, cost and production scale of iron powder have an important influence on the development of P / M industry, which is an important sign to measure the development level of P / M Industry in a country.

In order to manufacture mechanical parts for different purposes, iron powder with various properties has been developed. There are iron powder with high-pressure billet strength and specific strength distribution for the manufacture of oil bearing; high compressibility iron powder for the manufacture of high-density parts; high loose density iron powder for the preparation of slender parts; low loose density and high specific surface iron powder for the manufacture of friction materials; iron powder with super pure and super soft compressibility for the manufacture of soft magnetic parts, etc.

The ideal reduced iron powder for manufacturing mechanical parts shall have the following properties:

1. Stable and good powder fluidity;

2. Good compressibility;

3. High billet strength;

4. Small and stable size change during sintering;

5. Sintered parts have high strength and good toughness.