Red Brass (conductive) in H2, H2S atmosphere 2

[etownsend]

I am trying to evaluate the use of Red Brass (UNS C23000) as a conductive material in a gas plant atmosphere that is 70% H2, 14% CH4, 5% C2H6, 3%C3H8, and has <50ppm of H2S.

I have found lots of information on mechanical stresses and corrosion and stressing/fracturing of the brass due to this type of environment. But was looking for direction on where to find information that relates to the surface condition (mainly electrical properties) due to the corrosion. Of particular interest would be data on rates of corrosion (and depth of penetration over time).

A side note: Any advice on Copper Graphite material use in this atmosphere?

Thanks!

 

[EdStainless]

A Cu alloy and any H2S is not a good mix. Cracking would be very detrimental to conductivity, to say the least. Conductors in this kind of environment are often lead sheathed in order to protect them.

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.

http://www.trenttube.com/Trent/tech_form.htm

 

[rorschach]

Actually copper alloys are blanket approved (grandfathered to be honest) under NACE MR-0175. they do not stress corrosion crack in the presence of H2S. They do however surface corrode, sometimes quite badly. MR-0175 would be a good start for finding material candidates for use in H2S environments.

copper/Carbon may not work long term because as copper corrodes, the oxide may cause spalling. lead sheathing is a good idea, as is nickel or gold plating.