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I got a pin today ( thanks rockman). I should be able to find the alloy if I can hammer it out enough to get enough surface area to get a good test.
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The test that was performed just told the alloy. The local scrap yard has a gun that you put it aginst the metal and pull the trigger and it tells the alloy on the screen. It has no way to tell heat treatment. I had to hammer the pin flat to get a reading on the machine and I can tell you it seem softer than most AL I've ever delt with ( I know, not very sciencitific ).This is great info M16ty, but I think there's more to this we'd need to know before cranking out pins.
Is it 2024-O, 2024-T3, or 2024-T351? (The latter being heat treated versions of the 2024 alloy, 2024-O being not treated).
I'm not sure what tests were run, but the heat treating would make a difference in the yield strength of the pin (by nearly a factor of 2).
Here's a bit on 2024 alloy.
Better yet is you could find a rod close the the dia. of the winch input, slip a piece of pipe over the rod, drill through both for the pin, weld nut to pin, and put rod in vice. You could then use a torque wrench on the welded nut.What we really needed to compare is its shear strength.
I would take a ¾” bolt with its nut on, drill a 9/32” hole through both, clean and lube, stick the pin in, hold the bolt head in a vice, turn the nut with a torque wrench and read how much it takes to shear each sample.
This isn’t scientific but probably practical enough to be performed repeatedly anywhere in the world to help us select the material that comes closest to what you find for the OEM pin.
G.
I feel sure if I can find the temper I can cut them out of solid rod and drill two holes in it for less than a $1 a piece.It just seems like alot of work when Saturn Surplus has them for $3.50 each instock....
The pin I tested (which is a surplus pin) was 2024. The temper is what's in question now.Does any one out there have the resources or know of someone that could find out what alloy the shear pins are made of. From what I understand there is a special machine something besides a rockwell machine to test softer alloys. If the alloy could be found out making replacement pins or ones that would with stand a little more, would be easy.