Titanium Grade 5 (Ti-6Al-4V) (UNS R56400) is a very difficult-to-machine material that we run regularly for export customers. It has a density of 4.43 g/cm3, a tensile strength of 950 MPa and a typical hardness of HRC 36. Those numbers make it the right choice for aerospace structural parts and medical implants, and a poor choice when cost or corrosion resistance matters more than mechanical performance.
On our machines we hold +/-0.03 mm on turned and milled features and reach Ra 1.6 um where the drawing calls for it. Standard lead time for Titanium Grade 5 (Ti-6Al-4V) parts is 5-10 working days, including material procurement, machining and any finishing operation you specify.
Titanium Grade 5 (Ti-6Al-4V): key properties
| Property | Value |
|---|---|
| UNS / designation | R56400 |
| Density | 4.43 g/cm3 |
| Tensile strength | 950 MPa |
| Hardness | HRC 36 |
| Machinability | Very difficult |
| Suggested cutting speed (carbide) | 40-60 m/min |
| Relative material cost | 5 of 5 |
Machining Titanium Grade 5 (Ti-6Al-4V): what to plan for
- Heat at the cutting edge
- Never let the tool dwell
- Chip fire risk
- Coolant must be flood
Cutting speed for Titanium Grade 5 (Ti-6Al-4V) with carbide tooling sits around 40-60 m/min. Going faster burns the edge; going much slower causes rubbing and a poor surface. Flood coolant is not optional here. If your part has thin walls or a lot of stock to remove, say so in the RFQ — we plan roughing, stress relief and finishing as separate operations when the geometry demands it.
Parts we machine in Titanium Grade 5 (Ti-6Al-4V)
- Aerospace structural parts
- Medical implants
- Motorsport uprights
- Drone frames
Most Titanium Grade 5 (Ti-6Al-4V) work arrives as 2D drawings with a mix of critical and non-critical features. Loosening tolerance on the non-critical ones is the fastest way to cut cost, and we will tell you which features those are before we quote.
Tolerances, finish and lead time
| Item | Capability |
|---|---|
| General tolerance | +/-0.03 mm |
| Achievable surface finish | Ra 1.6 um |
| Minimum wall thickness | 0.8 mm (aluminium) / 1.0 mm (steel and stainless) |
| Typical lead time | 5-10 working days |
| Prototype quantity | 1 piece |
| Production quantity | 10 to 50,000 pieces |
Frequently asked questions
What is the lead time for Titanium Grade 5 (Ti-6Al-4V) parts?
Standard is 5-10 working days from drawing release, assuming the material is in stock. Exotic grades and cast forms can add 5 to 10 days. Finishing such as anodizing or plating adds 3 to 5 days.
What tolerance can you hold in Titanium Grade 5 (Ti-6Al-4V)?
+/-0.03 mm is routine on turned and milled features. Tighter than that is possible on specific features by grinding or lapping, but it is quoted separately because it changes the process.
Do you keep Titanium Grade 5 (Ti-6Al-4V) in stock?
We hold common sizes of Titanium Grade 5 (Ti-6Al-4V) and buy mill-certified stock for everything else. Material certificates are supplied with the parts on request.
Can you supply Titanium Grade 5 (Ti-6Al-4V) parts with a certificate of conformity?
Yes. We issue a dimensional report, a material certificate and a certificate of conformity as standard for production orders, and full PPAP or AS9102 paperwork when the programme requires it.
Related pages
- Materials — the full index for this section.
- Titanium Grade 2 CNC Machining for Chemical Equipment
- C360 Brass CNC Machining: Free-Cutting Brass Parts
- 420 Stainless Steel CNC Machining: Hardened Parts
- C110 Copper CNC Machining for Busbars and Heat Sinks
- Instant CNC quote
- Tolerance quick reference
- Frequently asked questions
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