Dave
I'm sorry not to be able to live up to Inge's expectations immediately: I
think I have this somewhere, but it will take me a while to puzzle where,
its not something you need to know that often.
I can tell you it will probably be about 4-5% less than the room temp
figure, but that's just something I "know", I can't support with a
reference.
As you no doubt are aware, a more reliable repository of knowledge is here
http://www.boulder.nist.gov/div853/lead_free/props01.html
If its not there, and "about 4-5%" is not good enough let me know and I will
dig around, but no time now till weekend.
Regards
Mike
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman
Sent: Thursday, September 01, 2011 1:13 PM
To: [log in to unmask]
Subject: 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
To
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
cc
Subject
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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