Glossary
Leaded Steel
Steel
Lead is added to steel to enhance its machinability, and is a key feature of premium low-carbon free-cutting (free-machining) steels. Lead’s much lower melting point and the fact that it is insoluble in steel, means that during machining it melts and forms a lubricating layer at the point of contact between machining tool and the steel being turned, milled or drilled. This lubrication allows faster machining through higher rotational and material feed speeds, and enhances cutting tool life. The lead in the steel also helps reduce deformation stresses.
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Anonymous
Very good overview of the weekly steel market.
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