Material · Titanium Alloys
Titanium Grade 5 (Ti-6Al-4V)
Half the weight of steel at full strength, bio-inert, corrosion-proof — and priced accordingly.
Price index: $$$$$
Material properties
| Parameter | Value |
|---|---|
| Tensile strength | 950 MPa |
| Yield strength | 880 MPa |
| Hardness | 36 HRC |
| Density | 4.43 g/cm³ |
Choose it when
When the spec demands steel strength at 56% of steel weight, body-fluid biocompatibility or seawater immunity — airframe fittings, implants, subsea hardware. ELI (Grade 23) available for medical traceability.
Look elsewhere when
If 7075-T6 aluminum or 17-4 PH meets the load case, they cost a fraction: titanium machining runs ~2.5× stainless due to heat concentration at the tool edge and springy thin walls.
Compatible finishes
As-Machined
The baseline finish: straight off the machine, fastest and cheapest.
Bead Blasting
The uniform matte look: erases tool marks, hides fingerprints, preps perfect anodizing.
Polishing
Progressive abrasives down to mirror: the finish for optics, molds and show surfaces.
Electropolishing
Reverse plating that brightens, deburrs and passivates stainless in one step.
Passivation
Chemical hygiene for stainless: strips embedded iron so the steel can be as stainless as advertised.
Laser Marking
Permanent identification with zero dimensional change: serials, logos and codes burned in, not stuck on.
Typical applications
- Orthopedic implants and trials (ELI grade)
- Airframe fittings and engine brackets
- Marine and subsea hardware
- Racing and aerospace fasteners
Compared with similar grades
| Property | Titanium Grade 5 (Ti-6Al-4V) | Titanium Grade 2 |
|---|---|---|
| Tensile strength | 950 MPa | 345 MPa |
| Yield strength | 880 MPa | 275 MPa |
| Hardness | 36 HRC | ~200 HV |
| Density | 4.43 g/cm³ | 4.51 g/cm³ |
| Price index | $$$$$ | $$$$$ |
| Machinability | 1/5 | 2/5 |
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