Additional Info
A Brief History of Ti-6Al-4V Grade 5 Titanium
Ti-6Al-4V Grade 5 Titanium (also known as Grade 5 Titanium, Ti-6Al-4V, UNS R56400 or 3.7164) is currently one of the most widely used titanium alloy grades.
The name Ti-6Al-4V itself indicates the material’s composition: Ti stands for titanium, 6Al for approximately 6% aluminium, and 4V for approximately 4% vanadium. Aluminium and vanadium are the key alloying elements in this grade, determining the material’s strength level, microstructure, hot-working properties and ultimate range of applications.
Ti-6Al-4V is an α+β titanium alloy that achieves an excellent balance between strength, weight, corrosion resistance and fatigue performance. It is typically the most common choice for components requiring weight reduction, load-bearing capacity and corrosion resistance. This grade is widely used in aerospace, medical implants, precision machinery and high-strength industrial components.
How was the Ti-6Al-4V Grade 5 Titanium developed
The development objective of Ti-6Al-4V was to create a load-bearing material that is lighter than steel and stronger than aluminium alloys.
Components such as aerospace structural parts, engine peripherals, brackets, connectors and fasteners impose dual requirements on materials: ‘lightweight + load-bearing’. Steel offers sufficient strength but is relatively heavy; aluminium alloys are lighter but have significant limitations in terms of strength, heat resistance and fatigue performance.
Consequently, materials engineers required a new titanium alloy: one that was lighter than steel, possessed sufficient strength, and could be processed using established manufacturing techniques such as forging, rolling, heat treatment and machining. It was in response to this need that Ti-6Al-4V was developed and gradually refined.
In terms of composition, the addition of aluminium stabilises the α phase, enhancing strength and heat resistance; the addition of vanadium stabilises the β phase, improving hot working properties and ensuring more stable microstructural control after heat treatment. Together, these elements form an α+β dual-phase microstructure, which is a key characteristic of Ti-6Al-4V.
Thanks to this microstructural characteristic, Ti-6Al-4V not only offers high strength but is also available in a stable supply of various forms, including sheets, bars, wires, discs and square plates. The production process is well-established, and the procurement channels are relatively straightforward.
Early Applications of Ti-6Al-4V Grade 5 Titanium
Ti-6Al-4V was first used on a large scale in the aerospace sector.
Aircraft structural components, brackets, fasteners, frame parts, connectors and engine-related parts all require weight reduction without compromising strength, and Ti-6Al-4V perfectly meets this requirement.
Subsequently, the medical industry also began to utilise Ti-6Al-4V. Orthopaedic fixation devices, spinal structures, dental components and surgical implant parts require materials with sufficient strength, good corrosion resistance and stable biocompatibility.
In the field of mechanical engineering, Ti-6Al-4V is used for lightweight structural components, high-strength fasteners, precision-machined parts and sports equipment components. The reasons for choosing it are straightforward: high strength, low weight and corrosion resistance, making it suitable for high-demand components designed for long-term service.
Current Applications of Ti-6Al-4V Grade 5 Titanium
Ti-6Al-4V Grade 5 Titanium is currently primarily used for high-strength, lightweight and corrosion-resistant components.
Common applications include:
Aerospace applications: aircraft structural components, struts, fasteners, connectors, frame components, engine peripheral parts, unmanned aerial vehicle (UAV) structural components and lightweight load-bearing components. Key structural components typically require verification of drawing specifications, delivery condition, mechanical properties, fatigue requirements and inspection requirements.
Medical Applications: Orthopaedic implant components, trauma fixation devices, spinal structural components, dental implant components, dental restoration components, medical fasteners, medical structural components, and precision medical parts. For long-term implants or high-demand implant projects, verification must be conducted in accordance with ASTM F1472, ISO 5832-3, drawing specifications, inspection documentation, and the end-use application. If the customer specifically requires the ELI grade, Ti-6Al-4V ELI / Grade 23 should be selected; standard Grade 5 cannot be used as a direct substitute.
Mechanical and industrial applications: High-strength fasteners, lightweight structural components, robotic components, jig components, sports equipment parts, corrosion-resistant fasteners, marine environment components, small shaft parts, and precision machined parts requiring weight reduction.
Sunxin’s Ti-6Al-4V Grade 5 Titanium Supply Support
Sunxin supplies Ti-6Al-4V Grade 5 Titanium in the form of sheets, bars, wire, discs, square plates, and custom-cut dimensions.
Supported standards include ASTM F1472 and ISO 5832-3. The specific applicable standard must be confirmed based on the product form, end use, and customer drawing requirements.
Available specifications include:
Sheets: T0.5–T200.0 mm, mill-finished, standard lengths 200 / 250 / 300 mm, widths 200 / 300 / 500 / 1000 mm, tolerance -0.0 / +1.0 mm, supplied in the annealed condition.
Bars: Φ1.0–Φ200.0 mm, polished or precision-polished, standard length 3 m/piece, tolerances available as h6–h9, supplied in the annealed condition.
Wire: Φ1.0–Φ3.0 mm, polished or precision-polished, standard length 1 m/piece, tolerances available as h6–h9, supplied in the annealed condition.
Titanium discs: Diameter Φ98.0 mm, thickness 10.0 / 12.0 / 14.0 / 16.0 / 18.0 / 20.0 / 22.0 / 25.0 mm, milled surface, available in vacuum-sealed packaging.
Titanium square plates: 150 × 140 × T, 205 × 145 × T, 250 × 155 × T; thicknesses 10.0 / 12.0 / 14.0 / 16.0 / 18.0 / 20.0 / 22.0 / 25.0 mm; milled surface; vacuum packaging available.
Prior to production of Ti-6Al-4V Grade 5 Titanium items, we recommend confirming the material form, delivery condition, surface finish, dimensions, tolerances and applicable standards. For medical, aerospace or other critical applications, further confirmation of strength requirements, fatigue requirements, inspection items, quality documentation and traceability requirements is also necessary.
Sunxin is certified to the
ISO 13485 and
ISO 9001 quality management systems. This means we can provide your project with rigorous batch management, comprehensive traceability controls, efficient testing coordination services and full quality documentation support, ensuring that every batch of material procured meets the highest standards.
