You know, this is EXACTLY why you don't let a metallurgist near chemicals. 
 Not a single one of them passed first year chemistry.

Everyone knows that IC is calculated in cubic slugs per newton-moles. Bev, 
back me up on this.

Doug Pauls



"David D. Hillman" <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
09/01/2011 07:13 AM
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Re: [TN] Solder Data Question






Hi Inge - yep, I try to use the SI system as much as possible, if for no 
other reason than to confuse Doug - he was trying to measure some IC 
results in fortnights per stone last week! And I was being lazy on the 
density as I figured the value existed without me having to do the 
calculation.  Technet has produced 2 values for me so I appreciate 
everyone's assistance.

Dave



Inge Hernefjord <[log in to unmask]> 
08/31/2011 04:27 PM

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Re: [TN] Solder Data Question






Dave, 
Mike Fenner has a great super solder map from his Indium time. If he does 
not answer, I'll look in my pile, but it will take time. You use kg/m3 ! 
Are you really a american? 
 
You can calculate yourself:
 
1/q = Ftin/Qtin + Flead/Qlead
 
in wich  F is the mass fraction and Q is the density of the respective 
elements
 
For more elements, just add :
 
1/Qalloy = Felement1/Qelement1 + Felement2/Qelement2 + etc
 
all must be in solid state at +20C
/Inge

On 31 August 2011 14:08, David D. Hillman <[log in to unmask]> 
wrote:
Hi folks - does anyone have the density value (kg/m3) for SAC305 at 245C?


Dave Hillman
Rockwell Collins
[log in to unmask]

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