Titanium Alloys
Titanium Grade 5 (Ti-6Al-4V) (UNS R56400) — Composition, Properties & Supply
Titanium Grade 5 (Ti-6Al-4V, UNS R56400, equivalent to Chinese TC4) is the most widely used α+β titanium alloy, accounting for over half of global titanium consumption. It pairs high strength, low density and good corrosion resistance, and is the workhorse for aerospace structures and medical devices.
What is the chemical composition of Titanium Grade 5 (Ti-6Al-4V)?
| Element | Symbol | Content (wt%) |
|---|---|---|
| Ti | Ti | Balance |
| Al | Al | 5.50–6.75 |
| V | V | 3.50–4.50 |
| Fe | Fe | ≤ 0.40 |
| O | O | ≤ 0.20 |
| C | C | ≤ 0.08 |
| N | N | ≤ 0.05 |
| H | H | ≤ 0.015 |
Values are typical specification limits. Actual heat analysis is reported on the EN 10204 3.1 mill test certificate supplied with each shipment.
What are the mechanical properties of Titanium Grade 5 (Ti-6Al-4V)?
| Property | Value | Note |
|---|---|---|
| Tensile strength | ≥ 895 MPa | Room temperature |
| Yield strength (0.2% offset) | ≥ 828 MPa | Room temperature |
| Elongation | ≥ 10 % | Gauge length 50 mm / 4D |
| Hardness | ≈ 36 HRC | Brinell / Rockwell |
What are the physical properties of Titanium Grade 5 (Ti-6Al-4V)?
| Property | Value |
|---|---|
| Density | 4.43 g/cm³ |
| Melting range | 1604–1660 °C |
| Thermal conductivity | 6.7 W/m·K |
| Elastic modulus | 113 GPa |
| Maximum service temperature | 400 °C |
What are the key characteristics of Titanium Grade 5 (Ti-6Al-4V)?
- Tensile above 895 MPa, about 2.6 times Grade 2
- Density 4.43 g/cm³ for exceptional specific strength
- Retains strength and creep resistance below 400 °C
- Can be solution treated and aged for extra strength
Where is Titanium Grade 5 (Ti-6Al-4V) used?
- Aircraft structures, landing gear and engine parts
- Orthopaedic and dental implants
- Motorsport and premium bicycle components
- High-pressure corrosion resistant chemical plant
- Marine propellers and offshore parts
- Sports equipment and eyewear frames
Which standards and specifications cover Titanium Grade 5 (Ti-6Al-4V)?
What product forms are available?
Frequently asked questions
How do I choose between Ti-6Al-4V and Grade 2?
Choose Grade 2 when corrosion resistance and formability matter most and strength demand is modest (heat exchangers, vessels, seawater piping). Choose Gr5 when strength and weight saving dominate (load-bearing structures, aerospace parts, implants). Gr5 is about 2.6 times stronger, but Gr2 forms and welds more easily and costs less.
What is Ti-6Al-4V ELI and how does it differ from standard Grade 5?
ELI (Extra Low Interstitial) is Grade 23: oxygen is reduced from ≤0.20% to ≤0.13% and iron is lower, giving better fracture toughness, crack-growth resistance and cryogenic toughness. It is used for orthopaedic implants, cryogenic vessels and critical aerospace parts, with slightly lower strength than standard Grade 5.
Need Titanium Grade 5 (Ti-6Al-4V) bar, tube, plate or forgings?
Send the grade, dimensions, standard and quantity. We answer within 10 minutes on working days and quote within 24 hours, with EN 10204 3.1 certification.
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