We have been puzzled what test should be performed to compare a non-passivated and a passivated 420 stainless steel component in order to tell the difference in corrosion resistance. We are afraid that salt spray will be too severe whereas humidity will take a long long time.
Any comment is welcome.
Thanks in advance. They should exhibit no sign of corrosion. Mr Chook, We are currently using this process for 300 series and PH17 series stainless steel with no problems. All information presented here is solely for general reference and does not represent a professional opinion nor the policy of an author's employer. If you have a question of your own, please post it on our 'new letter' form .