Description
Titanium Grade 5 Round Bars / UNS R56400 Round Bars
Titanium Grade 5 is the most widely used titanium grade. It is a two phase α+β Titanium alloy, with Aluminum as the Alpha Stabilizer and Vanadium as the Beta Stabilizer. This high-strength alloy can be used at cryogenic temperatures to about 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is used in the annealed condition and in the solution treated and aged condition.
Titanium Grade 5 (Ti6Al-4V) is the most commonly used alloy. Ti-6Al-4V is significantly stronger than other commercially pure titanium whilst still retaining the same stiffness and thermal properties (excluding thermal conductivity). Titanium Grade 5 extensively used in Aerospace, Medical, Marine and Chemical Processing.
Some applications include: compressor blades, discs, and rings for jet engines; airframe and space capsule components; pressure vessels; rocket engine cases; helicopter rotor hubs; fasteners; critical forgings requiring high strength-to-weight ratios.
The material Ti6Al4V is a frequently used titanium alloy, also known as 3.7164 in accordance with the AMS standard. This alloy was specially developed for use in the Aerospace Industry.
The standards AMS 4928, which relates to forged material, bars, profiles and wires, and AMS 4911, which relates to strips and sheets, ensure that the titanium alloy 3.7164 meets the strict quality standards of the aerospace industry. Another industrial variant of this titanium alloy is titanium grade 5, which is standardized according to ASTM B248 for flat material and ASTM B348 for round material and is classified as material number 3.7165. This alloy is also used in medical technology, particularly for surgical implants. The ASTM F136 standard specifies strict requirements for the chemical composition and mechanical properties. As a result, Ti6Al4V is labeled with the suffix “ELI” (Extra Low Interstitial) for even lower interstitial contents and is designated as grade 23 instead of grade 5.
Notable properties of Ti6Al4V include good hot formability and weldability, excellent resistance to various corrosive media, high strength and toughness at low density, excellent fatigue strength even under humid conditions and very high resistance to crack initiation and propagation.
Titanium Grade 5 Chemical Composition of Ti-6Al-4V :
| Elements | Min. | Max. |
| Ti | Bal. | |
| C | – | 0.08 |
| Fe | – | 0.03 |
| N | – | 0.05 |
| Al | 5.50 | 6.75 |
| O | – | 0.20 |
| V | 3.50 | 4.50 |
| H | – | 0.015 |
| Y | – | 0.005 |
| Other | – | 0.40 |
Specifications :
• AMS 4928 – Bars, Forgings, and Forging Stock (Annealed)
• AMS 4965 – Bars, Forgings (Solution treated and aged)
• AMS 4967 – Bars, Forgings (Annealed, Heat Treatable)
• UNS: R56400
• ASTM Standard: F1472
• ASTM Standard: B265 Grade 5
Applications :
Grade 5 Ti-6Al-4V alloy is a popular titanium alloy and is widely used in several industries including aerospace, power generation, marine, and offshore industries.
Main characteristics of Ti6Al4V (3.7165) :
• High tensile strength and ductility
• Good corrosion resistance
• Excellent biocompatibility
• High resistance to fatigue fracture
