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Calculate the corrosion resistance of your stainless steel with our PREN calculator

Last Updated: 20/11/20 at 1:58pm

Author: Jamie Hunt

Anzor Corrosion Resistance Calculator

A grade's resistance to pitting corrosion can be estimated and calculated by a PRE value or PREN (Pitting Resistance Equivalent Number). This number is an approximate guide for the corrosion resistance of each Stainless grade.

Our range of articles listed below gives you a good understanding of how to maintain your stainless steel and also calculate the resistance of your stainless steel.

Stainless Steel PREN Calculator

Which is better 304 or 316?

Dos and Don'ts of Stainless Steel

Super Duplex 2507 Stainless Steel


Stainless Steel PREN Calculator


Calculate your own PRE value by selecting your stainless grade and entering the element percentages. Your PRE value will appear below:

  Chromium (Cr)
  Molybdenum (Mo)
  Nitrogen (N)

PREN =


About Jamie Hunt

Jamie Hunt is the CEO of Anzor Fasteners LLP ,with 23 years for procurement and supply of Stainless Steel Fasteners and Hardware under his belt. He also has Olympic yachting experience and is a Certified ISSF Stainless Specialist.

Jamie is a member of the Australian Stainless Steel Development Association and has written many articles including "The Stainless Steel Guide", "Can you paint stainless steel?" and "Are stainless fasteners OK with treated timber?". Check out Jamie on his LinkedIn profile for more information.

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