Mercury Corrosion

[nickypaliwal]

Does mercury cause any corrosion to steels? API 571 only indicates LME to Copper, Aluminium and ALloy 400 from mercury.

Also some papers discuss about corrosion of SS316 from mercury and sodium amalgam.

 

[metengr]

Review this information

http://www.twi-global.com/technical...nd-what-are-common-embrittling-metal-couples/

You can also search on your own to learn.

 

[SJones]

http://files.engineering.com/downlo...94f4&file=Mercury_Interaction_With_Metals.pdf

I don't see TWI giving any references for their 'embrittlement at low temperatures' postulation. ConocoPhillips have done a lot of work to investigate LME, and concluded in NACE Corrosion 2010, Paper 10294, that neither A516, nor A193 B7 suffered any ill effects from exposure to liquid mercury in slow strain rate tests.

There is still the issue of whether liquid mercury might give rise to bimetallic corrosion should it drop out in carbon steel equipment, but I haven't seen much on that. I'd also like to know how sodium almagam is synthesised and gets into oil & gas production equipment.



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.

 

[metengr]

Further information by searching

http://www.mercurynetwork.org.uk/wp-content/uploads/2009/10/Pawel.pdf

 

[EdStainless]

Hg combines with so may other elements to form liquid or low melting alloys or amalgams that it almost always causes problems. Steels are some of the least effected materials by Hg.

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P.E. Metallurgy, Plymouth Tube

 

[dik]

thanks... another great thread... I was not aware of LME.

Dik

 

[SJones]

Follow up on the galvanic corrosion question:

http://www.jcse.org/viewpreprint.php?vol=11&pap=6

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.

 

[dik]

Steve:

Get an error:

Program Error - Preprint Not Published

Thanks for the effort, Dik

 

[SJones]

@Dik - you have to register and then the download link appears

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.

 

[dik]

Thanks, Steve...

 

[nickypaliwal]

Thanks to both of you....