1200y3 wrote:Thanks, I wondered what the difference is between beryllium and boron, when boron was accepted to be the best.
Well, that's debatable, I'd say - boron is still a good bit tougher, but also slightly heavier and less damping than beryllium. In addition, speed of sound is also still a good bit higher with boron, whereas thermal and electric conductivity are much lower. Either can be considered as very tough and light, though - the rest might be a question of voicing most of all...
What would the characteristics of gold cantilever be?
Not desirable, I'd say. Gold isn't very tough physically, its specific speed of sound is comparatively low (not much higher than air) and it's bloody heavy. Hence a pure gold cantilever would rather be a waste of money - whereas gold might be more interesting as a thin coating for damping and chemical protection and, probably most of all, for additional bling!
Greetings from Munich!
Manfred / lini