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Alternative material

Alternative material

Alternative material

(OP)
Please can anybody help???

I am looking for a replacement material for an exsiting component.

The material I currently have is a BE Cu material with a yield of 110000 PSI and UTS of 140000 PSI I require a replacement material with the same properties and NACE complient. But also has to be fit for service in a high Mercury well environment.

Can Anybody offer me a solution on materials available

RE: Alternative material

Can you provide some additional details?  What is the application, temperature, nature of loading (static, impact, fatigue, etc.), etc.  Which NACE standard does it need to meet?  There are a variety of ferrous or nickel-based alloys that can attain the requisite mechanical properties, but the environmental factors need to be clarified before I would give you any suggestions.  Also, can you provide some additional details on what constitutes a "high mercury" environment?

RE: Alternative material

I'm assuming that you are using Be-Cu because of its conductivity. You might want to try Brush Wellman Be-Ni alloy 360.

In the 1/2 hard condition has similar properties as 17-7Ph condition C. And is almost pure Ni, thus has great corrosion properties. Resistivity is roughly 4.3x10-5 ohm-cm. about 1/3 that of 17-7.

not sure about the Hg corrosion properties.


Nick


(ohyeah alloy 360 also performs well at elevated temps.)


RE: Alternative material

(OP)
Inconel 718 is Ok but if you are using it in oilfied you need to be careful the new stipulations in NACE are very stringent and call for a deltaphase testing.

you could try using inconel 925, which is good with mercury and Nace complient.

A good place to source is Special metals, who produce ignots, or for material suppliers try

HOWCO or Flange Fit.

hope this is of some sort of use

RE: Alternative material

I presume that BeCu is being used because it is strong and nonmagnetic.  Are magnetic properties important?

I would look at age hardening Ni alloy other than 718.  Maybe 725 or even X-750.
I am not sure that alloys like 925 or a PH stainless will have enough corrosion resistance.

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm

RE: Alternative material

most nickel alloys (925 included) will have problems with mercury. I'd definitely contact one of the metallurgy gurus up in Huntington (www.specialmetals.com) before going down that expensive road.

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