Guides / Materials

5-Axis Machining Titanium Parts: Why It Costs More and Takes Longer

September 20, 2026

Titanium looks like just another metal on a drawing until it reaches the machine. It cuts slowly, holds heat at the cutting edge instead of carrying it away in the chip, and punishes a setup that is not rigid enough. All of that shows up in the quote before the material cost is even added.

Why titanium cuts differently

Titanium has low thermal conductivity, so the heat generated by cutting stays concentrated at the tool tip instead of dissipating into the chip the way it does with aluminum. That heat accelerates tool wear and can warp a part if the setup is not stiff enough to resist deflection. Shops that machine titanium regularly run lower cutting speeds, sharper tool geometry and more rigid fixturing than they would use for the same shape in steel.

The practical result: titanium often takes three to five times longer to machine than the same geometry in aluminum, and tool costs run higher because inserts wear out faster.

Grades used in machined parts

Grade	Typical use	Notes
Grade 2 (commercially pure)	Corrosion resistant parts, medical instruments	Lower strength, easier to machine than Grade 5
Grade 5 (Ti-6Al-4V)	Aerospace structure, implants, high strength fasteners	The most common titanium alloy in machined parts
Grade 23 (Ti-6Al-4V ELI)	Medical implants requiring extra low interstitials	Higher purity grade for implantable devices

What it means for setup and tooling

A titanium part needs a fixture that eliminates vibration and deflection, since chatter both ruins surface finish and accelerates tool failure. Programming often includes lower feed rates on tight corners and pockets where the tool cannot dissipate heat as easily. First article proof-out tends to take longer than for aluminum or stainless, since the shop is dialing in speeds and feeds specific to the alloy and geometry rather than reusing a standard recipe.

Tolerance and finish

Titanium holds a similar tolerance range to aluminum and stainless, typically ±0.01 to ±0.025 mm on critical features, once the setup is proven rigid. Surface finish as-machined is comparable to stainless steel. The difference is not in what titanium can achieve, it is in how much time and tooling it takes to get there.

Typical titanium 5-axis parts

• Aerospace structural brackets and fittings
• Orthopedic implants and surgical instruments
• High strength fasteners and fittings
• Marine and motorsport components where weight matters more than cost

Cost and lead time versus aluminum and stainless

Titanium costs more per kilogram of raw material than aluminum or common stainless grades, and it costs more per hour of machine time on top of that. Lead time often runs longer too, since less common titanium bar sizes are not always in stock and may need to be ordered from the mill. If your design allows a choice of material, confirm with the shop what the actual price difference is before assuming titanium is required.

What to send with your RFQ

Specify the exact grade, since Grade 2 and Grade 5 differ meaningfully in both machinability and cost. Note whether the part needs a material certificate, which is common for aerospace and medical applications and should be confirmed on the RFQ rather than assumed. If the shop’s standard tolerance and finish work for your application, say so. It avoids paying for a tighter spec than the part needs on an already more expensive material.

The short version

Titanium is not harder to hold a tolerance on than aluminum. It is harder to cut, which means more machine time, more tool wear and more careful setup, all of which show up in the price and the lead time. Confirm grade, material certification needs and realistic tolerances up front to get an accurate quote the first time.

See also: Titanium on 5-Axis Machines: Grade 2, Grade 5 and Ti-6Al-4V ELI.

Frequently asked questions

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