Why Titanium CNC Machining Matters

Titanium is one of those materials that engineers love but machinists hate.

If you're sourcing titanium CNC machined parts — for aerospace, medical implants, or high-performance automotive — you need a shop that understands the quirks.

Common Titanium Alloys Used in CNC Machining

Ti-6Al-4V (Grade 5) — The Workhorse

About 50% of all titanium used in the US is Grade 5. It's the go-to for aerospace structural parts, medical implants, and racing components. It has a tensile strength of 950 MPa and good fatigue resistance. But it's notoriously hard to machine — expect tool wear 3-5x faster than with 6061 aluminum.

Ti-6Al-4V ELI (Grade 23) — For Medical & Critical Applications

Extra Low Interstitial (ELI) means less oxygen, iron, and other impurities. It's ASTM F136 certified for surgical implants. Surface finish requirements are usually tighter — think Ra 0.4 µm or better.

Commercially Pure Titanium (Grades 1-4)

Less strength, more formability. Grade 2 is the most common — used in chemical processing equipment and marine hardware. It's easier to machine than Grade 5 but still gummy.

Ti-5Al-2.5Sn & Other Alpha Alloys

Creep-resistant alloys for high-temperature applications. Engine nacelles, exhaust components, and hydrogen fuel cell parts.