3 ms·The article says it needs to be treated to be aviation-grade, in some Boeing-approved process.by smcin 2y agoThe article says it needs to be treated to be aviation-grade, in some Boeing-approved process.DannyBee 2y agoDepending on the alloy, they solution treat it and heat treat it.pfdietz 2y agoSome titanium is subject to repeated vacuum arc remelting (VAR).