Looking for reliable CNC Bending Monel? VT machining manufactures Monel parts to tight tolerances and consistent quality. Monel is strong, highly corrosion resistant in marine/acid service, so the process is set up specifically for the material.
Process Data for CNC Bending Monel
| Minimum inside bend radius | ~1.5 × t (across the grain) |
|---|---|
| Press force, 2 mm sheet, V16 die | ~19.9 t per metre |
| Typical springback at 90° | 1-2° |
| Angle tolerance | ±0.5° (CNC back-gauge, angle measurement on first part) |
Shown for Monel 400, the most common Monel grade we see for CNC Bending. Typical values for Monel 400, Annealed; confirmed on the first part.
CNC Bending Capability for Monel
- Angle accuracy ±0.5°
- Back-gauge positioning
- Bend allowance control
- Multi-bend sequencing
Monel Material Data
| Density | 8.80 g/cm³ |
|---|---|
| Tensile strength | 550–690 MPa |
| Yield strength (0.2%) | 240–345 MPa |
| Hardness | 110–150 HB |
| Melting point | 1300–1350 °C |
| Thermal conductivity | 21.8 W/m·K |
| Thermal expansion | 13.9 ×10⁻⁶/K |
| Electrical conductivity | 3.4% |
| Machinability (C36000 = 100%) | 30% |
| Grades we run | Monel 400, Monel K-500, Monel R-405 (free-machining) |
Published typical values for Monel 400. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Work-hardens like stainless but tougher. If the drawing allows R-405, cycle time drops noticeably for the same corrosion performance.
How CNC Bending Monel Works
The Monel blank is bent or formed against tooling under CNC-controlled ram travel and back-gauge positioning. Bend allowance and springback are compensated in the program so finished angles hit the print.
We start from your supplied geometry and tolerance scheme. The setup is designed to minimise re-clamping, which protects positional accuracy across features. A first article is verified against the drawing before the balance of the batch is released.
Achievable Tolerances for CNC Bending Monel
| Feature | Standard | Precision |
|---|---|---|
| Bend angle | ±1.0° | ±0.5° |
| Flange length | ±0.30 mm | ±0.15 mm |
| Hole-to-bend distance | ±0.30 mm | ±0.15 mm |
| Minimum inside radius | 1.0 × thickness | 0.8 × thickness |
| Minimum flange height | 4 × thickness + radius | 3 × thickness + radius |
| Bend-to-bend spacing | ±0.30 mm | ±0.15 mm |
| Sheet thickness range | 0.5–8.0 mm | 0.5–4.0 mm |
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 Bending Tolerances & Surface Finish
Formed Monel holds bend angles to about ±0.5° and consistent flange dimensions, with bend allowance compensated for the material and thickness.
The tightest tolerances are reserved for the features your drawing flags as critical. Share your tolerance scheme and we will confirm what is realistic before quoting.
Working with Monel
Monel is strong, highly corrosion resistant in marine/acid service. We translate those properties into a process plan: the right tooling, speeds, feeds and fixturing for the alloy.
Where the grade, temper or heat-treat condition matters to performance, we confirm it with you and can supply material certificates. Material is procured to recognised standards for consistent, repeatable results.
Design Tips for CNC Bending Monel
Small design adjustments often cut cost and lead time. Consistent bend radii, adequate flange lengths and grain-direction awareness reduce cracking and springback in formed Monel. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC Bending Monel
Monel parts made this way are found throughout aerospace, medical, automotive, electronics and industrial equipment. Prototype, bridge and production volumes are all welcome.
Typical Monel Parts for CNC Bending
Illustrative examples of CNC Bending Monel 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.
U-channel
- Material
- Monel
- Size
- 800 mm long, 3 mm thick
- Key callouts
- Angle ±0.5°, straightness 1 mm over length
- Batch
- 250 pcs
Formed in two hits with a rotating die to avoid marking the outside face.
Hemmed panel edge
- Material
- Monel
- Size
- 400 mm hem, 1.2 mm
- Key callouts
- Hem flat to 0.3 mm
- Batch
- 1,500 pcs
Hemmed to remove the sharp edge without a secondary deburr operation.
Radiused cover
- Material
- Monel
- Size
- R150 × 500 mm
- Key callouts
- Radius ±1 mm, no tool marks
- Batch
- 200 pcs
Bumped in 14 small steps rather than rolled, because the batch does not justify a roll set.
Finishing Options for Monel
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| Deburr / edge break | 0.05–0.3 mm | All parts unless the drawing says otherwise |
| Bead blast | Ra 1.6–3.2 µm | Uniform matt finish, hides tool marks |
| Laser marking | — | Part number, lot code, data matrix |
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 Bending Monel
- 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 Monel 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 Bending
Other Processes for Monel
Send the drawing, the Monel grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
What material thickness or size range suits CNC Bending Monel?
We form Monel sheet and plate to your developed flat pattern and bend sequence.
Which industries use CNC Bending Monel parts?
CNC Bending Monel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Monel components are required.
What is CNC Bending Monel and how is it done?
CNC Bending Monel refers to cNC bending forms sheet metal to precise angles using a programmed press brake and back-gauge. Applied to Monel — strong, highly corrosion resistant in marine/acid service — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What tolerances can you hold for CNC Bending Monel?
Achievable tolerances for Monel forming depend on the alloy, geometry and feature size. We hold tight, repeatable tolerances appropriate to the feature and material. Exact figures are confirmed against your drawing callouts.