Relation between hardness and Corrosion

[shughes123]

What is relation between hardness and subsequently the corrosion of material.....Also need point of views w.r.t NACE for this

 

[mcguire]

In the absence of phase changes there is none. Corrosion resistance is a function of local composition, not dislocation structure.

Michael McGuire

http://stainlesssteelforengineers.blogspot.com/

 

[Compositepro]

There is a good article in the latest issue of Professional Boatbuilder Magazine about designing with aluminum alloys and how cold working and heat treatment affect corrosion resistance. You need to register to get access.

 

[berkshire]

Compositepro (Chemical)
I just got that edition of PB and will second your recommendation.
B.E.

You are judged not by what you know, but by what you can do.

 

[SJones]

need point of views w.r.t NACE for this

By this statement it is assumed that the focus is on cracking mechanisms rather than general weight loss corrosion. The hardness limitations quoted in NACE MR0175, MR0103 and SP0472 paint a ready picture of the observed effects of material hardness on the likelihood of cracking in various environments.

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

 

[Ripz]

Hardness doesn't usually affect wall loss.
Higher hardness metals are more resistant to erosion.
Specific cracking mechanisms are affected by high hardness values.