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Iron for the production of iron-based powder metallurgy products,Website:http://www.sairui2009.com, iron, its quality indicators generally include: chemical composition, such as iron, carbon, oxygen, sulfur, phosphorus and acid insoluble content, oxygen content available hydrogen loss (reduction in hydrogen the weight loss) approximated; physical and technological properties, such as screen size composition, bulk density, flowability, compressibility and sintering dimensional stability. Such as the manufacture of high-density, high-strength mechanical parts use, the oxygen content of the iron