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October 2008

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Subject:
From:
Jack Crawford <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Jack Crawford <[log in to unmask]>
Date:
Tue, 14 Oct 2008 20:50:17 -0500
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The American Welding Society www.aws.org has established the magic temperature of 700 ° C as the separation point. Below 700 ° C is soldering, 700 and above is brazing/welding.

It's pretty hard to imagine a soldering tool/tip combination nearing 700 ° C. But I'll admit that I've used tungston tip resistive soldering tweezers with just a bit too much abandon and I've made solderable connector cups glow bright red. Well, I guess I kinda just wanted to see how hot the tweezers could get it. It's an easy way to turn a good connector into scrap.

Jack

Jack Crawford, IOM
IPC Director Certification and Assembly Technology
[log in to unmask]
847-597-2893
FAX  847-615-5693
3000 Lakeside Drive, Suite 309 S
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Eric CHRISTISON
Sent: Monday, October 13, 2008 2:50 AM
To: [log in to unmask]
Subject: Re: [TN] Need soldering advice ASAP No II - tangential question..

Interesting post Mike,

At the risk of going a little off topic I've never quite understood the distinction between a solder and a braze. Is there a clear cut difference in the metallurgy of the different joints?

Regards,

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