Multimet Overseas is the most trusted and leading manufacturer, supplier and exporter of Leaded Copper. Leaded coppers are categorized as low lead alloys, or free machining alloys and high lead alloys. In the free machining alloys, the lead acts as chip breaker and lubricant making these alloys easier to machine than their non leaded counter parts. The high leaded copper alloys are used in bearing applications. In the bearing materials, the lead acts as a solid lubricant and the copper is the load bearing support. Lead is added to many of the copper alloys producing free machining brasses, bronzes and other copper alloys.
Lead is added to many copper alloys to make all types of free machining alloys. Lead does not affect the structure and properties of copper because it is practically insoluble in solid copper. Lead coppers are categorized as low lead alloys, or free-machining alloys and high lead alloys. In the free-machining alloys, the lead acts as chip breaker and lubricant which makes these alloys easier to machine than their non-leaded counter parts. High lead copper alloys are used in bearing applications.
The microstructure of the leaded copper alloys is similar to the structure of the unalloyed copper materials with the addition of almost pure lead particles in the grain boundaries. The size and amount of lead particles in the structures depends on the concentration of lead in the alloy. Contact us today with your requirement for the best prices.