I can't believe you guys are saying Titanium machines like aluminum. Are you talking about commercially pure titanium? There is a world of difference between that (40,000 psi tensile strength) and 6AL-4V. Here's a hint: 4% vanadium means it has more vanadium than a premium tap. 125 sfm for face milling is moving right along. I have machined it until the inserts dulled and I was making sparks. I have no knowledge that it burns. Magnesium is knwon for burning and putting it out is quite difficult and counter intuitive. I've heard of a new "triple five" alloy that is even harder to machine than the standard 6-4 alloy. If you quote this at 5 times higher than making the same part in mild steel, you are badly underestimating it. It is one humbling material. I went through TiALN coated inserts like they were PEZ candy. The guy who mentioned profile milling knows what he's talking about.
Dave |