CNC Thread Grinding Molybdenum is a core capability at VT machining. We combine controlled grinding with material-aware setup for Molybdenum — an alloy that is very high melting point and thermal stability — to produce parts that meet your specification first time.
Process Data for CNC Thread Grinding Molybdenum
| Wheel (supply condition) | Silicon carbide or diamond |
|---|---|
| Depth per pass (rough / finish) | 0.01-0.03 / 0.002-0.005 mm |
| Achievable finish | Ra 0.2-0.4 µm |
| Typical size tolerance | Thread class 4h / lead ±0.003 mm per 25 mm |
Shown for Molybdenum, the most common Molybdenum grade we see for CNC Thread Grinding. Typical values for Molybdenum, Stress-relieved; confirmed on the first part.
CNC Thread Grinding Capability for Molybdenum
- Pitch accuracy to grade 3
- Hardened-part threading
- Lead screws & gauges
- Fine surface finish
Molybdenum material properties, finishing options and grade notes are on our CNC Surface Grinding Molybdenum page.
How CNC Thread Grinding Molybdenum Works
An abrasive wheel removes a fine, controlled layer from the Molybdenum part. Wheel specification, dressing interval, infeed and coolant are matched to the alloy's hardness so the surface is not burned or left with residual stress.
Programming is driven directly by your 3D model or print. Work-holding, tool selection and the cutting strategy are planned around the critical features and the material before the first chip is cut. First-off inspection confirms the process is centred before production continues.
Achievable Tolerances for CNC Thread Grinding Molybdenum
| Feature | Standard | Precision |
|---|---|---|
| Size (OD, ID, thickness) | ±0.005 mm | ±0.002 mm |
| Flatness over 100 mm | 0.010 mm | 0.003 mm |
| Parallelism | 0.010 mm | 0.003 mm |
| Roundness | 0.005 mm | 0.002 mm |
| Squareness | 0.010 mm | 0.005 mm |
| Surface finish | Ra 0.4 µm | Ra 0.1 µm |
| Workpiece hardness | up to 62 HRC | up to 65 HRC |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
CNC Thread Grinding Tolerances & Surface Finish
Ground Molybdenum reaches single-micron tolerances on size, flatness and parallelism, with surface finishes down to Ra 0.1–0.4 µm — and a near-mirror finish on suitable alloys.
Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.
Design Tips for CNC Thread Grinding Molybdenum
We are happy to suggest design tweaks that improve manufacturability. Allowing adequate grind stock, specifying realistic flatness over the true datum, and relieving corners help us hit tight tolerances on Molybdenum efficiently. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC Thread Grinding Molybdenum
Customers order CNC Thread Grinding Molybdenum components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.
Typical Molybdenum Parts for CNC Thread Grinding
Illustrative examples of CNC Thread Grinding Molybdenum parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Lapping plate
- Material
- Molybdenum
- Size
- 300 × 300 × 30 mm
- Key callouts
- Flatness 0.005 mm over the full face
- Batch
- 20 pcs
Ground, stress-relieved, ground again — one pass will not hold flatness on this area.
Punch tool
- Material
- Molybdenum
- Size
- Ø10 × 60 mm
- Key callouts
- OD ±0.002 mm, roundness 0.002 mm, Ra 0.1 µm
- Batch
- 300 pcs
Cylindrical ground after hardening to 60 HRC — machining soft would not hold the size.
Gauge block set
- Material
- Molybdenum
- Size
- 50 × 30 × 10 mm
- Key callouts
- Thickness ±0.002 mm, flatness 0.002 mm, parallelism 0.002 mm
- Batch
- 200 pcs
Ground wet in one chucking, then left to normalise before final inspection at 20 °C.
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote CNC Thread Grinding Molybdenum
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Molybdenum grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for CNC Thread Grinding
Other Processes for Molybdenum
Send the drawing, the Molybdenum grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
Which industries use CNC Thread Grinding Molybdenum parts?
CNC Thread Grinding Molybdenum parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Molybdenum components are required.
Why is Molybdenum a good choice for CNC Thread Grinding?
Molybdenum is very high melting point and thermal stability, which makes it well suited to CNC Thread Grinding. We tune the process to the alloy so the finished Molybdenum grinding part meets your dimensional and functional requirements.
What is the typical lead time and minimum order for CNC Thread Grinding Molybdenum?
CNC Thread Grinding prototypes for Molybdenum can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
What surface finish is achievable on Molybdenum with CNC Thread Grinding?
Grinding can take Molybdenum to a fine finish — typically Ra 0.1–0.4 µm, and to a mirror grade on suitable alloys.
What material thickness or size range suits CNC Thread Grinding Molybdenum?
We machine Molybdenum across a broad size range; share your part envelope for confirmation.