Titanium / UNS R56400
Grade 5 (Ti-6Al-4V) is the most widely used titanium alloy: an alpha-beta alloy with high strength, low density and good corrosion resistance, heat-treatable for still higher strength.
- UNS R56400
- W.Nr. 3.7165
- Spec ASTM B265
- Density 4.43 g/cm³
Also known as / equivalents
| System | Designation |
|---|---|
| UNS | R56400 |
| W.Nr. | 3.7165 |
| Also known as | Ti-6Al-4V, Ti6Al4V, Gr 5, 3.7165 |
Chemical composition
| Element | Min % | Max % |
|---|---|---|
| Al | 5.5 | 6.75 |
| V | 3.5 | 4.5 |
| Fe | — | 0.40 |
| O | — | 0.20 |
| C | — | 0.08 |
| N | — | 0.05 |
| H | — | 0.015 |
| Ti | Bal. | — |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength (min) | 895 MPa (129.8 ksi) |
| Yield strength, 0.2% offset (min) | 828 MPa (120.1 ksi) |
| Elongation in 50 mm (min) | 10 % |
Physical properties
| Property | Metric | Imperial |
|---|---|---|
| Density | 4.43 g/cm³ | 0.160 lb/in³ |
| Magnetic response | Non-magnetic | — |
Available forms & specifications
| Form | Specification | Size range |
|---|---|---|
| Sheets, strip & plates | ASTM B265 / ASME SB265 | 0.3 mm – 6 mm |
| Seamless & welded pipe | ASTM B861, B862 | 1/8" – 24" NB |
| Tubes | ASTM B338 | 1/8" – 24" NB |
| Bars & billets | ASTM B348 | 3 mm – 500 mm |
| Forgings | ASTM B381 | 1/2" – 48" NB (larger on request) |
| Fittings | ASTM B363 | 1/2" – 48" NB |
Corrosion & temperature resistance
Titanium's stable oxide film gives near-immunity to seawater, chlorides and oxidising acids; Grade 7's palladium addition extends this into reducing acids and hot brines.
Applications
Titanium Grade 5 (Ti-6Al-4V): Aerospace, offshore, high-performance parts. Heat exchangers and condensers, chlorine and chlorate plants, desalination, marine hardware and aerospace components.
Titanium Grade 5 (Ti-6Al-4V) vs Titanium Grade 2
| Titanium Grade 5 (Ti-6Al-4V) | Titanium Grade 2 | |
|---|---|---|
| UNS | R56400 | R50400 |
| Key property | High strength-to-weight | Commercially pure, corrosion resistant |
| Typical use | Aerospace, offshore, high-performance parts | Heat exchangers, chlorine plant, marine |
| Cr (wt %) | — | — |
| Ni (wt %) | — | — |
| Mo (wt %) | — | — |
| C (wt %) | ≤ 0.08 | ≤ 0.08 |
| Tensile / yield (min, MPa) | 895 / 828 | 345 / 275 |
Frequently asked questions
What is the UNS number of Titanium Grade 5 (Ti-6Al-4V)?
Titanium Grade 5 (Ti-6Al-4V) is designated UNS R56400 (W.Nr. 3.7165).
What is Titanium Grade 5 (Ti-6Al-4V) used for?
High strength-to-weight. Typical uses: aerospace, offshore, high-performance parts.
Is Titanium Grade 5 (Ti-6Al-4V) magnetic?
Non-magnetic.
In which forms can I buy Titanium Grade 5 (Ti-6Al-4V) from Rajkamal Metals?
Coils & Strips, Sheets & Plates, Pipes & Tubes, Round Bars & Rods, Flanges, Buttweld Fittings, Socket Weld & Threaded Fittings, Fasteners. Sizes as per standard; other sizes on request.
Do you supply a Mill Test Certificate with Titanium Grade 5 (Ti-6Al-4V)?
Yes. Actual values are given in the Mill Test Certificate (EN 10204 3.1) supplied with each order.
What is the difference between Titanium Grade 5 (Ti-6Al-4V) and Titanium Grade 2?
Titanium Grade 5 (Ti-6Al-4V): high strength-to-weight. Titanium Grade 2: commercially pure, corrosion resistant. See the comparison table on this page.
Last updated: 30 October 2026. Grade names identify the supply range; designations are not engineering equivalents. Availability, make, origin and documentation are confirmed at quotation.
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