Factors that can influence corrosion:

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Environment

Chemical Natural Storage, transit

Stress

Residual stress from fabrication

Static, variable and alternating operating stresses

Shape

Joints and flanges Crevices and deposits Trapped and contained  liquid

 

Compatibility

Metals with metals

Metals with other materials

Quality control of materials

 

Movement

Flowing fluids

Parts moving in fluids

Two- and three-phase flow

Entrained solids

Vibration and pulsing

 

Temperature

Oxidation, scales and tarnishes

Heat-transfer effects Molten deposits Condensation and dewpoints

 

Control

Surface cleaning and preparation

Coatings

Cathodic protection

Inhibitors Data logging Inspection

Planned maintenance