B-1 Corrosion & Materials of Construction
Selecting the right pump type and sizing it correctly are critical to the
success of any pump application. Equally important is the selection
of materials of construction. Choices must be made between metals
and/or non-metals for pump components that come into contact with
the pumpage. In addition, gaskets and O-ring material selections
must be made to assure long leak-free operation of the pump's
dynamic and static sealing joints. To assist in proper selection,
included in this section is a brief discussion of specific types of
corrosion and a general material selection guide.
Corrosion
Corrosion is the destructive attack of a metal by chemical or electra-chemical
reaction with its environment. It is important to understand
the various types of corrosion and factors affecting corrosion rate to
properly select materials.
TYPES OF CORROSION