Titanium Machining and Procurement for Orlando, FL Aerospace and Medical

Grade 5 (Ti-6Al-4V) and Grade 23 (Ti-6Al-4V ELI) share the same nominal alloy composition, but Grade 23 is held to extra-low interstitial limits, meaning lower oxygen, nitrogen, carbon, and iron content. That cleaner chemistry gives Grade 23 better fracture toughness and ductility, particularly at low temperatures, at the cost of slightly lower strength than standard Grade 5. In Orlando, the distinction matters most by industry. Aerospace and defense structural parts typically use Grade 5, where its high strength-to-weight ratio is the priority and standard interstitial levels are acceptable. Medical-device and implant-related work specifies Grade 23 because the improved toughness and tighter chemistry support biocompatibility and damage tolerance in the body. The two are not interchangeable on a drawing. If a print calls for Grade 23, you must supply ELI material with certs proving the chemistry, since substituting Grade 5 would violate the medical or fracture-critical requirement the designer specified. Always match the grade exactly to the callout.

The cost gap comes from both material price and machining difficulty. Titanium stock costs several times more per pound than aluminum, and the metal is significantly harder to cut. Titanium has low thermal conductivity, so the heat generated at the cutting edge does not dissipate into the chip the way it does with aluminum; instead it concentrates at the tool, accelerating tool wear and risking work hardening of the part. To manage this, shops run lower spindle speeds, use heavy flood coolant, change tooling more often, and take lighter, slower cuts. The result is much longer cycle times and higher tooling consumption per part. For Orlando buyers, the practical implication is to expect a substantial premium over the same geometry in aluminum, plan for longer lead times, and reduce cost where you can by minimizing material removal, starting from near-net stock or forgings, and designing generous radii. Choosing a shop experienced with titanium also matters, because dialed-in speeds and fixturing prevent the scrapped parts that drive cost even higher.

Some can directly and others coordinate it through qualified partners, so confirm the specific processes you need. NADCAP (National Aerospace and Defense Contractors Accreditation Program) accreditation applies to special processes such as heat treating, chemical processing, nondestructive testing, and welding, and aerospace primes frequently flow these requirements down to titanium parts. Many Orlando machine shops serving the Lockheed Martin and L3Harris supply base are AS9100 certified for machining but outsource NADCAP special processes to accredited suppliers, which is a normal and acceptable arrangement as long as the chain is documented. When sourcing, identify exactly which special processes your part requires, ask the shop whether each is in-house or partnered, and confirm the partner holds current NADCAP accreditation for that process. Also verify that penetrant or ultrasonic inspection, if required on your critical part, comes from a NADCAP-accredited source. The key is that every special process in the routing traces to a qualified provider, with documentation included in the part's delivery package.

For a part where corrosion resistance is the driving requirement and high strength is secondary, Grade 2 commercially pure titanium is usually the best choice. It offers outstanding resistance to a wide range of corrosive media, good weldability, and easier formability and machinability than the Ti-6Al-4V grades, all at a lower cost than Grade 5 or Grade 23. That makes it well suited to fluid-handling components, chemical-process hardware, and semiconductor or photonics parts that contact aggressive environments but do not carry heavy structural loads. If the same component also needs significant mechanical strength, then Grade 5 becomes the candidate, since it provides far higher yield strength while still resisting corrosion, though it is harder to fabricate and more expensive. For medical fluid-path parts, Grade 23 may be specified for its purity. The decision hinges on whether your part is corrosion-led, in which case Grade 2 is ideal, or strength-led, in which case you move up to an alloyed grade.

Titanium parts should arrive with a complete traceability and process package, because both aerospace and medical buyers treat documentation as part of the deliverable. At minimum, require a mill test report tying the material to a specific heat with full chemistry and mechanical properties, which for Grade 23 must demonstrate the extra-low interstitial limits. For aerospace work, expect AS9100 first-article inspection reports and certificates of conformance for every special process in the routing, with NADCAP accreditation documented for heat treat, chemical processing, and nondestructive testing. For medical-device work under ISO 13485, require documentation of cleaning, passivation, and inspection, plus the certs proving medical-grade chemistry. If the part undergoes penetrant or ultrasonic inspection, those results should be included. The principle is that you should be able to trace the finished part back through every process to the mill heat. Confirm these requirements before quoting, since titanium material is too expensive to risk producing a lot that cannot be accepted for missing paperwork.