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A heat treatment that increases strength and wear resistance at moderate cost. Carburizing increases strength and wear resistance by diffusing carbon into the surface of the steel creating a “case” while retaining a substantially lesser hardness in the “core”. This treatment is applied to low carbon steels after machining. Strong and very hard-surface parts of intricate and complex shapes can be made of relatively lower cost materials that are readily machined or formed prior to heat treatment.
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