Can Titanium be CNC Machined?

Yes. Titanium and its alloys are routinely CNC machined on standard milling, turning, and multi-axis equipment. The real question is how to machine it so you get accurate, repeatable parts without burning tools or fighting dimensional movement. With the right grade selection, sharp tooling, conservative parameters, and correct fixturing, titanium is a well-understood machining material.

It is harder than aluminum and many steels, but the difficulty is specific rather than mysterious. The main engineering factors are low thermal conductivity, a tendency to work-harden if the tool rubs instead of cuts, abrasive tool wear, high cutting forces with vibration risk, thin-wall deflection, and chip evacuation. Address those factors and titanium machines predictably.

Ti-6Al-4V (Grade 5) is by far the most machined titanium alloy because of its balance of strength, temperature capability, and availability. Grade 23 is the low-interstitial ELI version used where biocompatibility is required and machines the same way. Grade 2 (commercially pure) is common for corrosion-resistant non-structural parts, while Grade 9 (Ti-3Al-2.5V) is used for tubing and lightweight structures.

Yes. Grades 1 through 4 are commercially pure titanium with rising strength and falling ductility across the grades. They machine more easily than the alpha-beta alloys in terms of hardness, but they are gummy and tend to build up on the tool edge, so sharp tools and proper rake angles still matter. Grade 1 is the softest and most formable; Grade 2 is the general-purpose grade.

There is no single number that applies to all titanium work. Sensible cutting speed depends on the exact grade, tool material and coating, machine rigidity, coolant strategy, and depth of cut. A parameter published for one alloy, tool, and machine can be wrong for another. We establish cutting data per job during setup and DFM review rather than quoting a fixed table.

Generally yes. Titanium raw stock costs more than aluminum, it removes material more slowly because cutting parameters are conservative, tool wear is higher, and cycle times are longer. The honest comparison is total part cost versus the performance you gain — weight saving, corrosion resistance, or temperature capability — not just the machining rate.

Only when the properties justify it. Titanium offers far better strength-to-weight than 6061, much higher service temperature, and superior corrosion resistance in chlorides and chemicals. But it costs more and machines slower. If your part does not need those properties, 6061 is usually the smarter choice. We help buyers decide based on load, temperature, and environment rather than defaulting to titanium.

Tolerances are feature-, geometry-, and condition-dependent, not a single blanket number. General-profile work commonly holds ±0.1 mm or tighter; ±0.01 mm is achievable on qualified features when stock condition, part geometry, fixturing, and measurement method all support it. We confirm achievable tolerances on your drawing during DFM review instead of promising a universal figure.

As-machined titanium typically reaches a clean Ra 0.8–3.2 µm depending on tooling. Bead blasting gives a uniform matte look; passivation improves corrosion resistance; electropolish smooths the surface; and thin-film oxide anodizing (Ti anodize) produces color for identification or cosmetic use. Hard coatings such as DLC or TiN can be applied where wear demands it. Titanium is not anodized the way aluminum is.

Yes, especially the alpha-beta alloys. If the cutting tool rubs or takes too light a cut, the surface can work-harden and accelerate tool wear on the next pass. The standard countermeasure is to maintain a consistent, positive chip load with sharp tools and avoid dwelling or light scraping passes. This is a primary reason titanium needs deliberate parameters.

Yes, but thin walls deflect under cutting forces and clamping, which is the main risk to accuracy. Strategies include rigid but even fixturing, balanced cutting forces, sharp tools, staged material removal, and verifying wall flatness during machining rather than only at final inspection. We assess wall thickness and support geometry during DFM before committing to a process.

It depends on quantity, geometry, and property requirements. CNC machining gives full-density, isotropic titanium with excellent surface finish and fast turnaround for prototypes and low-to-mid volumes. Titanium additive manufacturing suits complex internal features and very low quantities but has anisotropic properties, rougher surfaces, and higher part cost. For most production parts, machined titanium is the more predictable route.

Give the grade, the product form (bar, plate, billet, sheet), the condition (annealed, solution treated, etc.), and the specification (for example ASTM B348 or AMS). Attach a 3D model and a 2D drawing with tolerances, state quantity and delivery date, and note the operating environment. The more precisely you define these, the more accurate the quote and the fewer surprises in production.

Aerospace and defense, medical and dental, chemical and marine processing, motorsport and high-performance cycling, and semiconductor and vacuum equipment are common users. The driver is usually weight saving, corrosion resistance in aggressive media, biocompatibility, or service at temperatures where aluminum is unsuitable.

We operate under an ISO 9001:2015 quality system and machine titanium for demanding environments. Where a customer program requires IATF 16949-aligned process disciplines or AS9102 first-article inspection, we can apply those practices and supply the documentation, but we do not claim aerospace or medical certifications we do not hold. We will tell you plainly what we can document.

Send a 3D model (STEP/IGES), a 2D drawing with tolerances, the intended grade and form, quantity and target date, and the operating environment. We run a DFM review covering grade choice, tolerances, fixtures, and inspection, then return a quote with realistic lead time. Starting from a clear specification avoids the most common delays.