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SN-101C is a "Yttria" doped materia. It is Hot Isostatically Pressed (HIP) and meets the demanding requirements of ball bearing and check valve applications. Due to the HIP processing, it has zero porosity, fine grain microstructures, minimal level of dopant, and appropriate levels of strength, hardness, toughness, and rolling contact fatigue behavior to work exceptionally well in ball bearing and check valve applications.

The dopant or "sintering aid" is the controlling factor concerning corrosion resistance. Magnesia based silicon nitrides are highly inert in most liquids and gases.