3 ms·
>>The Model 684 would have used HK31, an alloy of magnesium, thorium, and zirconium which is no longer in use since the three percent that is thorium makes the
by marktangotango 12y ago
>>The Model 684 would have used HK31, an alloy of magnesium, thorium, and zirconium which is no longer in use since the three percent that is thorium makes the alloy radioactive.
Nice I had no idea. There's a B-58 on display at Whiteman AFB, I thought it was production model, but maybe it's a mock up?
I love reading about these old projects, it was a different era for sure.