We machine Titanium Grade 12 into pump housings, fittings and instrument parts. Turning and milling to ±0.005 mm, Ra 0.8–1.6 μm, with 100% inspection before shipment. From one prototype to 10,000+ part runs.
Four failures we see on incoming drawings and on the shop floor.
The alloy work-hardens at the cut. Thermal conductivity runs roughly half that of 6061, so heat stays in the cutting zone and edge temperatures climb. Run too slow and the surface smears. Run too fast and the insert fractures. We set speeds, feeds and coolant pressure per feature rather than per material.
Grade 12 has a low elastic modulus. A 1 mm wall on a filter housing can move 0.05 mm when the vise opens, and the part reads oversize on the CMM. Rough, stress-relieve, then semi-finish before the final pass. We leave stock on both sides and cut the last 0.3 mm with light radial engagement.
Cross-drilled holes in valve bodies leave a burr at the intersection. Hand deburring with a scraper leaves a witness mark and a variable edge. We drill from the correct side, use a controlled feed at breakthrough, and reach internal intersections with a back-chamfer tool or a small ball nose on a 5-axis path.
Grade 12 filler is often substituted with Grade 2, which looks the same and passes a visual check. The difference shows up later as preferential corrosion in the heat-affected zone. We hold mill certificates against the heat number, and we do not mix Grade 12 and Grade 2 stock on the same rack.
Two process decisions drive every Grade 12 job: heat removal and clamping strategy.
Titanium conducts heat poorly. On UNS R53400 we run uncoated carbide or AlTiN-coated inserts at moderate surface speed, high feed per tooth, and flood coolant aimed at the cutting edge, not at the part. Depth of cut stays generous so the tool cuts under the work-hardened layer instead of rubbing on it.
For deep pockets and long bores, high-pressure through-tool coolant clears chips that would otherwise be re-cut. Re-cutting a titanium chip doubles the load on the edge and is the most common cause of sudden insert failure.
The low modulus that makes Grade 12 useful in aggressive media also makes it easy to clamp out of shape. Soft jaws bored to the actual blank diameter, low clamping pressure, and supports under thin floors keep the part where the drawing says it is.
For parts with a finished bore and a tight concentricity callout, we machine the second side on a mill-turn center so the datum is never released. One setup means one stack-up. We verify with a CMM and send the report with the shipment when the drawing asks for it.
Compare the candidate against what the service actually demands.
| Condition | Grade 12 (UNS R53400) | Better alternative |
|---|---|---|
| Reducing acid, moderate temperature | Good fit | Grade 7 for hotter service |
| Chloride media, no oxidizer | Good fit | Grade 12 resists crevice attack |
| High strength, thin section | Not ideal | Grade 5 Ti-6Al-4V |
| Cost-driven, mild environment | Over-specified | Grade 2 commercially pure |
| High-cycle fatigue, aerospace | Not ideal | Grade 5 with certified melt |
| Seawater piping and fittings | Good fit | Grade 12 welds and forms well |
One shop for the machining, the finishing and the inspection paperwork.
16 simultaneous 5-axis centers cut contoured impeller and housing geometry in one setup. Shorter cycle, fewer datums, tighter true position on angled features.
Mill-turn centers turn a bore and mill a flange without releasing the part. Suited to valve bodies, adapters and instrument housings with concentric callouts.
First-off parts from bar stock so you can pressure-test a design before committing to a run. Same tooling path carries into production.
Bead blasting, tumbling and polishing. We do not anodize titanium; for wear surfaces we can specify a coating and manage the vendor.
Raw material check, in-process monitoring and final inspection. Mill certificates, CMM reports and dimensional records travel with the parts.
We machine the mating parts, check the fit, and ship the set bagged by assembly so your line does not sort hardware.
Numbers you can check a drawing against before you send it.
| Item | Range | Notes |
|---|---|---|
| Tolerance | ±0.005 mm (±0.0002 in) | On critical features, CMM verified |
| Surface finish | Ra 0.2–0.8 μm / Ra 0.8–1.6 μm | Fine finish on sealing faces |
| As-machined finish | Ra 1.6–3.2 μm | Standard on non-sealing surfaces |
| Maximum part size | 4,000 mm | Larger travel on long beds |
| Rotary work | Ø400 mm rotary table | 4-axis indexing and contouring |
| Lot size | 1 to 10,000+ parts | No minimum order quantity |
Six things that decide whether the parts arrive usable.
Fifteen years on reactive and work-hardening alloys. Tool paths, coolant strategy and clamping are already written before your job hits the floor.
Critical features are cut to ±0.005 mm and verified on a CMM. If the drawing calls for tighter, we say so before we start rather than after.
You get a quotation and a free DFM review within 12 hours. We flag thin walls, deep bores and features we cannot inspect.
Once the drawing and material are released, production can start within 24 hours. Parts ship in 3–5 days on standard work.
Every part is checked. Raw material certificates, in-process records and final dimensional reports are available on request.
ISO 9001:2015, IATF 16949:2016, ISO 13485:2016 and ISO 27001:2022. Your drawings and data stay under NDA on request.
Pump housings, valve bodies and flanges exposed to reducing acids. The requirement is a sound surface and correct filler identification.
Fittings, manifolds and sensor bodies that resist chloride crevice attack. Sealing faces need a controlled finish.
Small housings and fluid-path components where biocompatibility and cleanability matter. No minimum order quantity.
Wear parts and structural brackets that see load plus corrosion. Geometry often needs 5-axis access.
Grade 12 is tougher and work-hardens faster than commercially pure Grade 2. Cutting forces are higher and edges wear sooner, so tool life is shorter.
The difference is manageable if speeds and feeds are set per feature. Treating Grade 12 like Grade 2 is what causes broken tools and smeared finishes.
We work to ±0.005 mm on critical features, with ±0.0002 in as the imperial equivalent. That applies to bored diameters, bearing seats and mating faces.
On long, slender parts or thin walls, we will tell you at quote stage which callouts are realistic and which need a design change.
Yes, with the right sequence. Rough, relieve stress, then semi-finish before the final light pass on each side.
Clamping pressure matters as much as cutting data. Soft jaws bored to the blank and supports under thin floors keep the wall where the drawing says it is.
Yes. We hold mill certificates against the heat number and can include them with the shipment.
For welded assemblies, we keep Grade 12 and Grade 2 filler segregated so the correct wire is used and traceable.
There is no minimum order quantity. We run from one prototype to 10,000+ part runs on the same process.
A single first-off part is a normal way to start, especially on a new housing or fluid-path design.
Quotation and free DFM analysis come back within 12 hours. Production can start within 24 hours of release, and standard work ships in 3–5 days.
That timing assumes material is available and the drawing is frozen. Non-standard stock or a coating step adds time.
Bead blasting, tumbling, brushing and polishing are done in-house. Titanium is not anodized, so if you need a wear surface we specify a coating and manage the outside vendor.
Laser marking is available with a minimum character height of 1.5 mm for part numbers and traceability codes.
Yes. Uploads are secure and confidential, and an NDA is available on request before you share any geometry.
We hold ISO 27001:2022 for information security, which covers how drawings and data are stored and accessed.
Upload the model and drawing. You get a quotation and a free DFM review within 12 hours, and we flag anything we cannot hold before the first chip is cut.
12-hour quote100% inspectionNo minimum order quantityNDA 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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