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April 2007

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Subject:
From:
Hernefjord Ingemar <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Hernefjord Ingemar <[log in to unmask]>
Date:
Mon, 16 Apr 2007 11:54:06 +0200
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text/plain
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text/plain (84 lines)
Adam,

Clark pumps use SS for this fluid, as it seems.
Inge

http://www.clarksol.com/html/GearPumpMatCompat.htm


How are you these days, Brian? As an arbiter elegantum, I suppose you
live a calm and comfortable life nowadays. Don't see you as freq as
usual online.

Inge 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Ellis
Sent: den 16 april 2007 09:58
To: [log in to unmask]
Subject: Re: [TN] stainless compatibility in alkaline etchant

I would not recommend stainless steel where there are free chloride
ions. Use titanium.

Brian

Adam Seychell wrote:
> Does anyone know if stainless steel 316 corrodes when exposed to 
> alkaline ammonia chloride etchants ?  I have this diaphragm pump with 
> internal stainless steel fasteners which are exposed to the etchant. 
> The pump elastomers are EPDM and santoprene, and body material is 
> glass filled polypropylene. I am wondering if the pump can be used for

> alkaline etchants.
> 
> For a test I placed some stainless steel in etchant at let standing 
> for one week. There was no visible surface corrosion, nor any 
> measurable mass loss. I know this doesn't tell me I can use the pump 
> and expect it to last.
> 
> 
> best regards,
> Adam Seychell
> 
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