VT machining offers CNC Milling for Grade 4 Titanium (UNS R50700 / ASTM B348 Gr4), typically supplied annealed. Strongest CP titanium; used for dental and surgical parts.
CNC Milling Notes for Grade 4 Titanium
We use high-efficiency toolpaths with constant engagement on Grade 4 Titanium to keep cutting temperature and tool wear under control.
For estimating, a 100 × 100 × 10 mm block of Grade 4 Titanium weighs about 0.45 kg.
Starting Parameters for CNC Milling Grade 4 Titanium
| Cutting speed (carbide) | 35-75 m/min |
|---|---|
| Feed per tooth | 0.028-0.07 mm |
| Spindle speed, Ø10 mm end mill | 1110-2390 rpm |
| Insert / tool class | ISO S — sharp PVD-coated carbide |
| Coolant | High-pressure flood emulsion (70 bar+ through-tool where possible) |
| Thermal growth, 100 mm part, +10 °C | 8.8 µm (CTE 8.8 µm/m·K) |
Starting values for Grade 4 Titanium, Annealed; optimised on the first article.
Grade 4 Titanium Data Relevant to CNC Milling
| Equivalent designations | UNS R50700 / ASTM B348 Gr4 |
|---|---|
| Key composition | CP Ti, O ≤0.40% |
| Typical supply condition | Annealed |
| Hardness (typical) | ~250 HB |
| Machinability rating | 22% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How Grade 4 Titanium Differs
Strongest CP titanium; used for dental and surgical parts.
Typical applications: Dental implants, surgical hardware.
Grade 4 Titanium vs Similar Grades
| Grade 4 Titanium | Grade 3 Titanium | Grade 5 Titanium | Grade 2 Titanium | |
|---|---|---|---|---|
| Key composition | CP Ti, O ≤0.40% | CP Ti, O ≤0.35% | Al 5.5-6.75%, V 3.5-4.5% | CP Ti, O ≤0.25% |
| Hardness | ~250 HB | ~200-230 HB | ~36 HRC | ~160-200 HB |
| Tensile (MPa) | ≥550 | ≥450 | ≥895 | ≥345 |
| Machinability % | 22 | 22 | 22 | 25 |
| Typical use | Dental implants, surgical hardware | Pressure vessels, aerospace ducting | Aerospace brackets, implants, motorsport | Chemical process parts, marine, medical |
More on CNC Milling Titanium
Finishing options, quality documentation and general cnc milling guidance for all titanium grades are on our CNC Milling Titanium page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Milling Grade 4 Titanium
Send a STEP/IGES model or PDF drawing, confirm Grade 4 Titanium and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
Grade 4 Titanium in Other Processes
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Send the drawing, the Grade 4 Titanium condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
How clean are the edges produced by CNC Milling on Grade 4 Titanium?
Machined Grade 4 Titanium edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
What surface finish is achievable on Grade 4 Titanium with CNC Milling?
Surface finish on Grade 4 Titanium is controlled to your specification; we confirm the achievable Ra against your callout.
What material thickness or size range suits CNC Milling Grade 4 Titanium?
We machine Grade 4 Titanium across a broad size range; share your part envelope for confirmation.
Can VT machining make custom Grade 4 Titanium parts to my drawing?
Yes. Grade 4 Titanium machining is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
What is CNC Milling Grade 4 Titanium and how is it done?
CNC Milling Grade 4 Titanium refers to multi-axis milling cutters remove material to produce prismatic features, pockets, slots and contoured 3D surfaces. Applied to Grade 4 Titanium — high strength-to-weight, biocompatible and corrosion resistant — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.