This grade is commercially pure titanium with 0.12–0.25% palladium. We machine it into chemical, marine and medical parts on 127 CNC machines in Dongguan, holding ±0.005 mm with 100% inspection before shipment.
Ti-0.15Pd behaves like Grade 2 in the cut, but it costs far more per kilogram. Small process errors get expensive quickly.
Titanium galls against titanium and against stainless fasteners. A thread that hand-turns in the shop locks up on the line, and the part comes back as scrap. Correct tap selection, cutting fluid and thread-form control prevent it.
The whole point of this grade is the palladium addition. Mill certificates that list only Ti, Fe, O and N tell you nothing about corrosion life. We ask for chemistry with Pd before the first cut.
Splitting a part across two vendors doubles setup error and lead time. A pump housing that needs a turned bore, a milled flange and cross-drilled ports should leave one shop, one inspection report.
Titanium springs back. A 1.5 mm wall cut in one pass measures fine on the machine and drifts out of tolerance after release. Rough, stress-relieve, then finish with light radial engagement.
Two process decisions carry most of the risk: how the material is held, and how the corrosion-critical surfaces are finished.
Titanium conducts heat poorly, so the tool edge takes the temperature. We run carbide at conservative surface speeds with through-tool coolant above 70 bar, which keeps the chip from welding to the insert and holds dimension across a batch.
For parts with deep pockets or long slender features, we rough on 3-axis machines and finish on one of 16 simultaneous 5-axis centers. Fewer setups means fewer datums, and datum count is where titanium tolerance stacks go wrong.
On a heat exchanger plate or a chloride pump impeller, the finish you leave is the finish the environment sees. Embedded iron from a contaminated brush or a shared deburring wheel becomes a pitting site. Titanium tooling and finishing media stay segregated for this reason.
We document as-machined finish at Ra 1.6–3.2 μm as standard, and can hold Ra 0.8–1.6 μm or Ra 0.2–0.8 μm where sealing faces or flow paths call for it. Surface roughness is measured and recorded, not estimated.
Palladium raises the cost well above Grade 2. Use it where the environment actually demands it.
| Service condition | Recommended grade | Reason |
|---|---|---|
| Chloride or brine above 60 °C | Ti-0.15Pd (UNS R52250) | Pd stabilizes the passive film |
| Dilute reducing acids | Ti-0.15Pd (UNS R52250) | Resists crevice attack |
| Seawater, ambient temperature | Grade 2 titanium | Lower cost, adequate resistance |
| High-strength structural part | Ti-6Al-4V | Pd grade has low yield strength |
| Wear surface under load | Ti-6Al-4V or coated steel | Commercially pure titanium galls |
| Hydrofluoric or hot HCl | Not titanium | Attacks the oxide layer directly |
One shop covers the full routing, so the part does not travel between vendors mid-process.
16 simultaneous 5-axis centers for impellers, housings and contoured medical geometry.
Mill-turn centers handle a turned bore plus milled features in one setup.
First articles cut from the same titanium stock you will run in production.
Bead blasting, polishing and passivation with titanium-dedicated media.
Formed titanium brackets and covers for wet or chloride-exposed assemblies.
Fit-check models so you can validate a design before cutting metal.
| Item | Standard scope |
|---|---|
| Maximum part size | Up to 4,000 mm on large-travel machines |
| Tolerance | ±0.005 mm (±0.0002 in) on critical features |
| Surface finish | Ra 1.6–3.2 μm as machined; finer on request |
| Material check | Pd content verified against mill certificate |
| Inspection | Raw material, in-process and final; 100% before shipment |
| Minimum order | No MOQ, from one prototype to 10,000+ parts |
| Reports | Dimensional and material reports on request |
| Confidentiality | Secure uploads; NDA available on request |
Fifteen years cutting titanium alloys in Dongguan, with three plants and a Singapore facility.
Tolerance held on critical features and verified on the inspection report, not by eye.
Complex contours finished in one setup instead of being re-fixtured across machines.
Drawing review, machinability notes and pricing returned within 12 hours.
Parts that pass final inspection the first time, across all material families.
Also ISO 9001:2015, IATF 16949:2016 and ISO 27001:2022 certified.
Pump housings, valve bodies and heat exchanger plates exposed to chloride streams.
Brackets, manifolds and fastening hardware in permanent seawater contact.
Instruments and implant-adjacent hardware where titanium biocompatibility is required.
Grade 11 is Grade 2 with 0.12–0.25% palladium added. Mechanical properties are close: both are commercially pure, low-strength, highly formable titanium.
The difference shows up in corrosion service. Palladium stabilizes the passive oxide film, so the alloy tolerates chlorides and dilute reducing acids that would pit Grade 2.
UNS R52250 is the standard designation for Ti-0.15Pd. It is also written as ASTM Grade 11 and appears under Werkstoff 3.7225 in European references.
When you send a drawing, put the UNS number and the Pd range on the face of the print. That removes any chance of the shop substituting Grade 2.
Yes, but it takes a plan rather than one aggressive pass. We rough leaving stock, let the part stabilize, then finish with light radial engagement and sharp tooling.
Below about 1.5 mm wall thickness, tell us at quoting. It affects fixturing choice and may add a stress-relief step to the routing.
Threads are cut with titanium-specific taps and a lubricant that keeps the chip from welding. Where the design allows, we specify a slightly different thread form or a coating on the stainless fastener.
For sliding surfaces, a hardcoat anodize or a dry-film lubricant separates the two titanium faces.
As-machined we deliver Ra 1.6–3.2 μm. Where a face seals or carries flow, we can hold Ra 0.8–1.6 μm, and Ra 0.2–0.8 μm on smaller sealing features.
Finish is measured, not estimated. If you need a specific Ra on a specific face, put it on the drawing rather than in a note.
We request a mill certificate listing Pd along with the standard Ti, Fe, O, N and H values. The Pd line is what confirms the grade.
If the certificate omits palladium, we go back to the material supplier before cutting. Machining the wrong grade is unrecoverable.
There is no minimum order quantity. One prototype and a 10,000-piece run go through the same process.
For a single prototype, expect a slightly higher unit price because programming and fixturing are not amortized. That is normal across every shop.
Quotation and DFM analysis come back within 12 hours. Production can start within 24 hours of approval.
Typical parts ship in 3–5 days. Complex 5-axis or multi-operation work takes longer, and we say so at quoting rather than after.
Upload the STEP file and print. You get a quote, a machinability review and any DFM flags within 12 hours.
12-hour quote100% inspectionNo minimum orderNDA on request
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Upload your 3D model or 2D drawing and get a quotation with a free DFM analysis. Maximum processing size 4,000 mm.
CNC Metals 13 grades
CNC Plastics 10 grades
Machines & processes 12 options
Surface & post-processing 10 options
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