The table shows how the various metals are been denoted noble and less noble.

• *Ranges in acidic water, e.g. in crevices, stagnant, low velocity or poorly aerated water
• The closer 2 metals in the table are to each other, the less prone they are to corrode
• The further away 2 metals in the table are, the greater the risk of corrosion of the less noble (anode)
• The higher the potential the more noble a specific material will be
  
  Example:
  - Stainless steel AISI 304 is more noble than aluminum
  - Stainless steel AISI 316 is more noble than AISI 304
  - Titanium of any grade is more noble than AISI 316