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Old 15-07-2016, 19:39   #46
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Re: Blind rivets for mast - stainless steel or monel?

Perhaps the final blind rivet to mention is the exploding rivet... So I have this old 1940 Stinson Model 10 airplane. Stinson was owned by Consolidated Vultee Aircraft. Consolidated Vultee invented the exploding rivet for field repairs during WWII. The rivet has a small charge inside that blows up when you heat it.
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Old 25-07-2016, 02:11   #47
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Thumbs up Re: Blind rivets for mast - stainless steel or monel?

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Originally Posted by artisanmach View Post
Wow ! Thanks for that .
It's pretty clear that stainless is the better bet .
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Old 04-09-2016, 12:31   #48
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Re: Blind rivets for mast - stainless steel or monel?

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Originally Posted by Russ View Post
Real answer is the insulate dissimilar metals with Tef- Gel. Russ
If Tefgel is recommended for electrical connections, it can't insulate. Sounds like urban legend or puffing. I'm not sayin' it can't reduce corrosion--it can--it's just that the "insulation" angle is silly. I have seen no evidence that any product can actually do that under bolting and thread pressures.

From the Tefgel web site:

Tef-Gel does not electrically insulate hardware. The PTFE (40%) is ultra fine powder that will extrude out of the contact area and into the voids of the surrounding areas.
Tef-Gel applied between electrical contacts and connectors does not increase the resistance of the connections even at hundreds of amps, maintaining the integrity of EMI shielding.
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Old 04-09-2016, 17:00   #49
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Re: Blind rivets for mast - stainless steel or monel?

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Originally Posted by thinwater View Post
If Tefgel is recommended for electrical connections, it can't insulate. Sounds like urban legend or puffing. I'm not sayin' it can't reduce corrosion--it can--it's just that the "insulation" angle is silly. I have seen no evidence that any product can actually do that under bolting and thread pressures.

From the Tefgel web site:

Tef-Gel does not electrically insulate hardware. The PTFE (40%) is ultra fine powder that will extrude out of the contact area and into the voids of the surrounding areas.
Tef-Gel applied between electrical contacts and connectors does not increase the resistance of the connections even at hundreds of amps, maintaining the integrity of EMI shielding.
Just to add to that:

"The function of Tef-Gel in eliminating dissimilar metal corrosion is the elimination of electrolytes from entering the interface of the metallic surfaces. Tef-Gel paste contains 40% PTFE powder and 0% volatile solvents, no silicones or petroleum solvents to evaporate, which would leave voids for electrolytes to be drawn into creating a galvanic cell. When both surfaces are coated and mated with Tef-Gel there are no voids for electrolytes (saltwater) to be drawn in by capillary action over extended periods of time."
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