We machine C-276 valve bodies, pump housings, flanges and fittings on 5-axis centers. Tight tolerances, verified chemistry, and a full inspection report before the box closes.
Molybdenum content varies between heats. A supplier substituting C-22 or a 316L lookalike passes a visual check and fails in chloride service. We verify mill certificates and run an XRF check on incoming bar before the first cut.
This alloy work-hardens fast. A heavy finishing pass raises surface hardness, then the bore springs back out of tolerance on the next operation. Light radial cuts and sharp tooling keep a Ø25 H7 bore where it belongs.
Ra 3.2 μm looks fine on a bench and leaks at 40 bar. Pump and valve faces need Ra 0.8–1.6 μm with no chatter marks. The wrong insert geometry leaves a wavy face that shows up only under pressure.
Tool wear on nickel alloys runs faster than on stainless. Without in-process probing, hole positions drift across a 200-piece run and the last batch gets scrapped. We measure during the run, not only at the end.
Recipe, tooling and inspection tuned for nickel-molybdenum alloys.
C-276 machines like a gummy superalloy. It work-hardens under the tool and pulls heat into the cutting edge, so the insert dulls before the diameter moves. We run carbide with a positive rake and alu-style geometry, keep radial engagement low, and never let the tool rub.
Speeds sit well below stainless practice. Feed stays high enough to cut under the hardened layer instead of skating across it. For deep pockets we use high-pressure coolant to clear chips, because a recut chip is the fastest way to chip an edge and scrap a cavity.
Valve bodies and manifolds carry angled ports and intersecting bores. On a 3-axis machine that means multiple fixtures and re-datuming, and every refixture adds position error. A simultaneous 5-axis center reaches those features in one setup, so the port centerline stays true to the main bore.
Inspection follows the drawing, not a habit. We check bore diameters, true position, wall thickness and surface finish, and we keep the records. Reports come on request with the shipment.
Use this when the drawing still says "or equivalent".
| Alloy | Where it wins | Where it does not |
|---|---|---|
| C-276 | Wet chloride, mixed acids, sour gas | Cost and tool life on long runs |
| C-22 | Oxidizing media and some chlorides | Higher cost, tighter supply |
| 316L | General chemical service | Pitting above roughly 60 °C chloride |
| Inconel 625 | High temperature plus corrosion | Harder to machine than C-276 |
| Titanium Gr 2 | Oxidizing chlorides, weight saving | Not for reducing acid service |
Simultaneous 5-axis centers handle angled ports, contoured faces and one-setup completion of complex housings.
Turned flanges, sleeves, bushings and shafts with tight diameter control on corrosion-resistant bar stock.
Pockets, grooves, bolt circles and deep holes in manifolds and valve bodies up to 4,000 mm.
One-off C-276 prototypes to prove a flow path or fit before committing to a production run.
Bead blasting, tumbling, brushing and polishing to hit the finish your seal or gasket needs.
Light assembly, laser marking and engraving with a minimum character height of 1.5 mm.
| Item | Range | Notes |
|---|---|---|
| Tolerance | ±0.005 mm (±0.0002 in) | Feature dependent |
| Finish | Ra 0.2–3.2 μm | Seal faces at Ra 0.8–1.6 μm |
| Max part size | 4,000 mm | Larger travels on 5-axis |
| Rotary table | Ø400 mm | For turned and milled features |
| Order size | 1 to 10,000+ | No minimum order quantity |
| Inspection | 100% before shipment | Reports on request |
Machining nickel and corrosion-resistant alloys since 2011. The parameters are settled before your job starts.
Held in millimeters and inches on features that matter, verified with calibrated instruments.
Quotation and free DFM analysis within 12 hours of a usable drawing and model.
Production can begin within 24 hours once the drawing, material and finish are locked.
Raw material check, in-process monitoring and final inspection on every order.
Three wholly-owned plants in Dongguan and Singapore, 7,600 m² of floor space.
Pump housings, valve bodies and heat-exchanger fittings that see wet chloride and mixed acids.
Sour-service flanges, adapters and downhole components where the material certificate is checked twice.
Digester fittings and chlorine-duty parts that fail early when the alloy grade is wrong.
Clean-service manifolds and fittings where surface finish and burr-free edges are part of the spec.
Deep, small-diameter bores and thin walls give the most trouble. Both need long tool overhang, and a long tool deflects. We plan those features early, sometimes leaving a support web that gets removed in a later operation.
Wide flat seal faces are easier. The challenge there is surface finish, not size.
Yes. Send the material with its mill certificate and we will machine it to your drawing. We still check the grade on arrival, because a mislabeled bar costs more to discover after the run than before it.
We can also source the material if you prefer a single supplier for stock and machining.
We work to ±0.005 mm on features that can be reached with rigid tooling and controlled temperature. That is a capability limit, not a default for every dimension.
On a long bore through a thin wall, the practical window is wider. We will tell you which dimensions we can hold and which need a note on the drawing.
Light radial engagement and a feed high enough to cut under the hardened layer. Rubbing is the enemy. Fresh inserts at the finishing stage matter more here than on stainless.
If a feature has to be reworked, we take a full-depth pass rather than skim the hardened skin.
As-machined runs Ra 1.6–3.2 μm. Sealing and gasket faces go to Ra 0.8–1.6 μm. Where a drawing calls for Ra 0.2–0.8 μm, we polish or lap after machining.
Bead blasting, tumbling and brushing are available when the finish is cosmetic or for cleanliness.
Yes, and it is free. We look at wall thickness, tool reach, corner radii and how the part will be held. If a small change saves a fixture or a secondary operation, we say so before you place the order.
Quotation and DFM analysis come back within 12 hours of a usable drawing and 3D model.
There is no minimum order quantity. We run single prototypes and production lots of 10,000 pieces or more.
For a first article we machine one piece and inspect it fully. Once you approve it, the parameters are frozen for the run.
Uploads are secure and confidential. We sign an NDA on request before you send files, and we do not share drawings or models outside the job.
If you need the parts marked without your end-customer's name, we can do that too.
Upload a STEP file and a 2D drawing with tolerances. You get a quote, a DFM note and a material plan back within 12 hours.
12-hour quote100% inspectionNo minimum orderNDA on request
Trusted by engineers and manufacturers worldwide
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
Material: not selected Machine: not selected Post-process: not selected
Fill in this short form and we'll open WhatsApp with your message ready to send. We only use these details to reply to you.
Nothing is sent until you press send inside WhatsApp.
