Not to be picky, but the strength is not measured in Ft. Lbs, it is measured in pounds per square inch.
Normally I wouldn't point this out, but it has a great deal to do with this post.
Because the value is in pounds per square inch the area of the joint is very important.
If the joint is a simple butt joint and is 3/8 wide by 3/32 thick, the area of the joint is .375 X .093, or .035 square inches. That multiplied by the 80,000 value equals 2790 pounds.
This 2790 value is the tensile strength, or, the force it takes to pull it apart with a load applied perpendicular to the joint (like pulling on it).
For sideways loads (shear) it is weaker by a factor of more than 2 which means a sideways load of 1395 (or less) will break it.
According to my information, the tensile strength of Silver is actually about 22,000 PSI. This value changes the results of the above calculations to a tensile force of 767.25 pounds will pull it apart and a side load of 383 pounds will break if off.
zonie