Corrosion of anhydrous hydrogen chloride 1

[etsen]

Can anhydrous hydrogen chloride gas and liquid be corrosive to SA-333 steel and stainless steel at low temperature? Could anyone be kind to provide some references about them? Thanks.

 

[cloa]

Just using Corrosion Engineering by Mars G. Fontana, provided you have a low moisture environment then you should never have an issue with HCL corrosion at low temperatures- it is just a covalent gas like nitrogen.

 

[strider6]

At low temperature if there is no water then it's not corrosive either for Carbon Steel or Stainless Steel. At high temp there could eb some prolems..

this is a good reference for Ni alloy and Stainless Steels.

Nickel Resistance (279)
Previews of service experience plus numerous laboratory and plant corrosion tests on the performance of nickel and nickel alloys in contact with chlorine, hydrogen chloride and hydrochloric acid. Discusses organic chlorinations, synthetic resins and rubber, petroleum refining, and pickling solutions.

http://www.enia.org/index.cfm/ci_id/15786/la_id/1/ci_doc_id/3143/search_keyword/metal/method/.html

Corrosion Resistance Data


S.

Corrosion Prevention & Corrosion Control

 

[moltenmetal]

Just don't forget for a moment that these materials will ONLY be resistant to dry HCl while the system remains absolutely DRY...

Upset conditions, start-up etc. will all have to take this into account. The least little bit of water present in the line WILL become aggressive hydrochloric acid in this service...