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Steel Glossary A-Z
Select the alphabetic index from the list below to appropriate section of the glossary or search from a term below.  
P
Pickling 
The removal of scales or oxides from the surface of a steel with the use of chemical or electrochemical reactions. The most frequently used method is by dipping the steel in an acid bath or spraying the surface of the material with acid.

Pig iron 
Molten iron produced in a blast furnace. Has a minimum carbon content of 1.5 percent. Pig iron is very brittle due to its high carbon content and is not used as a finished steel, but as a raw material. Name originated when the molten steel was poured into sand holes and solidified looking like suckling piglets.

Preheating 
Heating that is applied before other thermal or mechanical treatments. This is done in order to get rid of moisture as well as for the prevention of thermal shock.

  

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