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November 2003

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Subject:
From:
Dave Hillman <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 7 Nov 2003 11:48:01 -0600
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Hi folks! Cupron is a member of the cupronickel family and has all the

joyful solderability issues/constraints of nickel due to the percentage of

nickel contained in the alloy. A cupronnickel alloy is difficult to solder

using traditional electronics soldering practices.



Dave Hillman

Rockwell Collins

[log in to unmask]





                                                                                                                                       

                      Steve Kelly                                                                                                      

                      <[log in to unmask]>         To:       [log in to unmask]                                                               

                      Sent by: TechNet         cc:                                                                                     

                      <[log in to unmask]>        Subject:  Re: [TN] Cupron solderability                                                 

                                                                                                                                       

                                                                                                                                       

                      11/07/2003 11:10                                                                                                 

                      AM                                                                                                               

                      Please respond to                                                                                                

                      "TechNet E-Mail                                                                                                  

                      Forum."; Please                                                                                                  

                      respond to Steve                                                                                                 

                      Kelly                                                                                                            

                                                                                                                                       

                                                                                                                                       









Is cupron – cupro-nickel? It is very difficult to wet. When we do this we

usually put kapton tape on top of the part to hold it down because the

solder joint is so weak. Regards Steve Kelly



      -----Original Message-----

      From: TechNet [mailto:[log in to unmask]] On Behalf Of Glenn Pelkey

      Sent: Friday, November 07, 2003 11:59 AM

      To: [log in to unmask]

      Subject: [TN] Cupron solderability







      Hi folks,





      Anyone familiar with Cupron and if it is solderable?





      Checked Matweb, but no indication on solderability.  Basically, it is

      a copper and nickel alloy, although some show an iron component.  A

      quick test here with a sample showed no wetting action, even with an

      aggressive flux.  There is no surface finish to protect the copper or

      nickel from oxidation.





      Thanks,





      Glenn







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