#Brainstorming on carbon steel - preventing corrosion - surface preservation
#Brainstorming on carbon steel - preventing corrosion - surface preservation
(OP)
To all Experts 
, please…
I'd like to harvest your experience - knowledge
therefore I need your input on the following:
carbon steel (simple C45 / 1045) needs to be stored and delivered, without forming any rust/visual defects:
my own thought:
-) Increase in surface quality, maybe etching (finish with low roughness, cleaned of residuals)
-) High degree of purity within the steel, right heat treatment condition (…if possible, segregations/precipitations down)
-) Chlorides down (avoiding contact with road salt, dust…)
-) Low humidity storage (relative humidity <60%, low Temp …corrosion rate down)
-) Packaging under low relative humidity / low Temp (maybe with additional VCI)
…my battleplan. I'd like to exclude oiling or coating for now (saving costs)
The main issue is optics: Even if the functionality is not affected, no customer wants rust stains.
Please give me your ideas, thoughts or links to older posts/summaries
…hopefully this post can become a collection for everyone with similar challenges
Thank You!
, please… I'd like to harvest your experience - knowledge
therefore I need your input on the following:carbon steel (simple C45 / 1045) needs to be stored and delivered, without forming any rust/visual defects:
my own thought:
-) Increase in surface quality, maybe etching (finish with low roughness, cleaned of residuals)
-) High degree of purity within the steel, right heat treatment condition (…if possible, segregations/precipitations down)
-) Chlorides down (avoiding contact with road salt, dust…)
-) Low humidity storage (relative humidity <60%, low Temp …corrosion rate down)
-) Packaging under low relative humidity / low Temp (maybe with additional VCI)
…my battleplan. I'd like to exclude oiling or coating for now (saving costs)
The main issue is optics: Even if the functionality is not affected, no customer wants rust stains.
Please give me your ideas, thoughts or links to older posts/summaries
…hopefully this post can become a collection for everyone with similar challenges
Thank You!
Talk To Other Members
RE: #Brainstorming on carbon steel - preventing corrosion - surface preservation
While it is true if you keep the atmosphere dry enough you will not get serious rust it is almost impossible to prevent some surface 'blushing'.
This is why people often use Vapor Phase Corrosion Inhibitors.
The volatile chemicals leave a microscopic surface film that will resist rusting.
These really only work in enclosed spaces.
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P.E. Metallurgy, Plymouth Tube
RE: #Brainstorming on carbon steel - preventing corrosion - surface preservation
Material will be packaged, ...and while I'm reading your post: also enclosed and with additional VCI
...are there more dimensions to it / any ones that I didn't mention?
RE: #Brainstorming on carbon steel - preventing corrosion - surface preservation
Steve Jones
Corrosion Management Consultant
www.linkedin.com/in/drstevejones
All answers are personal opinions only and are in no way connected with any employer.
RE: #Brainstorming on carbon steel - preventing corrosion - surface preservation
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P.E. Metallurgy, Plymouth Tube
RE: #Brainstorming on carbon steel - preventing corrosion - surface preservation
"the four fundamental corrosion control methodologies"
is it:
changing material (other alloy, like**), environment (surrounding medium, VCI... no Dew), treated surface (oil, painted...phosphating) & lower temperature
(& active protection** with battery (here not possible))
??
...VCI I will talk to our contact person about residuals;
thanks, other aspect?
(I don't want to forget anything
RE: #Brainstorming on carbon steel - preventing corrosion - surface preservation
1. Change the material
2. Change the environment
3. Apply a coating
4. Apply cathodic protection
Like I said, 1, 3, and 4 are out given the stipulated requirements.
Steve Jones
Corrosion Management Consultant
www.linkedin.com/in/drstevejones
All answers are personal opinions only and are in no way connected with any employer.
RE: #Brainstorming on carbon steel - preventing corrosion - surface preservation
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P.E. Metallurgy, Plymouth Tube