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Secondary Operations

Since the tolerance for the MIM process falls within ±0.3%–0.5%, many parts are sintered to final dimensions. If tighter tolerances are required for a certain feature, a secondary metalworking operation can be performed. MIM materials can be machined, tapped, drilled, broached, sized, ground, or welded like their wrought counterparts. MIM components can also be heat treated to improve strength, hardness, and wear resistance. And because MIM typically limits a part’s interconnected porosity to less than 0.2%, standard coloring and plating techniques can be applied without the need for special surface preparation.