Titanium Grade 7 (Ti-0.2Pd) (UNS R52400) is a difficult-to-machine material that we run regularly for export customers. It has a density of 4.51 g/cm3, a tensile strength of 345 MPa and a typical hardness of HB 155. Those numbers make it the right choice for chemical process vessels and heat exchanger tubes, and a poor choice when cost or corrosion resistance matters more than mechanical performance.
On our machines we hold +/-0.02 mm on turned and milled features and reach Ra 1.6 um where the drawing calls for it. Standard lead time for Titanium Grade 7 (Ti-0.2Pd) parts is 4-8 working days, including material procurement, machining and any finishing operation you specify.
Titanium Grade 7 (Ti-0.2Pd): key properties
| Property | Value |
|---|---|
| UNS / designation | R52400 |
| Density | 4.51 g/cm3 |
| Tensile strength | 345 MPa |
| Hardness | HB 155 |
| Machinability | Difficult |
| Suggested cutting speed (carbide) | 50-80 m/min |
| Relative material cost | 5 of 5 |
Machining Titanium Grade 7 (Ti-0.2Pd): what to plan for
- Palladium content drives cost
- Same galling as Grade 2
- Limited availability
Cutting speed for Titanium Grade 7 (Ti-0.2Pd) with carbide tooling sits around 50-80 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 7 (Ti-0.2Pd)
- Chemical process vessels
- Heat exchanger tubes
- Pickling equipment
Most Titanium Grade 7 (Ti-0.2Pd) 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 | +/-0.02 mm |
| Achievable surface finish | Ra 1.6 um |
| Minimum wall thickness | 0.8 mm (aluminium) / 1.0 mm (steel and stainless) |
| Typical lead time | 4-8 working days |
| Prototype quantity | 1 piece |
| Production quantity | 10 to 50,000 pieces |
Frequently asked questions
What is the lead time for Titanium Grade 7 (Ti-0.2Pd) parts?
Standard is 4-8 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 7 (Ti-0.2Pd)?
+/-0.02 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 7 (Ti-0.2Pd) in stock?
We hold common sizes of Titanium Grade 7 (Ti-0.2Pd) and buy mill-certified stock for everything else. Material certificates are supplied with the parts on request.
Can you supply Titanium Grade 7 (Ti-0.2Pd) 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.
- 2017 Aluminum CNC Machining: High-Strength Rivet Alloy
- 7050 Aluminum CNC Machining for Thick Airframe Blocks
- Invar 36 CNC Machining for Optical and Metrology Parts
- 3003 Aluminum CNC Machining: Formable, Weldable Parts
- Instant CNC quote
- Tolerance quick reference
- Frequently asked questions
Get a price for your part
Send a STEP file and a drawing with tolerances, material and quantity. We quote within one working day and machine in our own facility in Shenzhen — milling, turning, EDM, grinding and finishing under one roof, no trading middleman.
Start an instant quote or send your drawings directly. English-speaking engineering support, DFM feedback before you commit to a batch.