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Home Materials Titanium Ti-6Al-4V Grade 5-3.7164-UNS R56400

Ti-6Al-4V Grade 5-3.7164-UNS R56400

Ti-6Al-4V (Grade 5) is the most widely used α+β titanium alloy, offering high strength, excellent corrosion resistance, and good fatigue performance while maintaining a low density. It also provides good machinability and biocompatibility, making it one of the key materials for aerospace, medical implant, and high-end industrial applications.

ASTM F1472：
ASTM F1472 – Standard Specification for Wrought Titanium-6Aluminum-4Vanadium Alloy for Surgical Implant Applications (UNS R56400)
ISO 5832-3：
Implants for surgery — Metallic materials — Part 3: Wrought titanium 6-aluminium 4-vanadium alloy

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Chemical Composition

Element	N	C	H	Fe	o	Ti
Content (%)	≤0.05	≤0.08	≤0.0125a	≤0.50	≤0.40	Balance

Heat Treatment Conditions and Mechanical Properties

Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation（4D）	Reduction of Area（%）	Hardness (HV10)
Annealed	≥550	≥483	≥15	≥25	≥150
Cold-worked	≥680	≥520	≥10	/	≥150

Supply Forms

Available Form	Size Range	Surface Finish	Length (Customizable)	Tolerance (Customizable)	Delivery Condition
Plate	T0.5-T200.0mm	Milled	L:200/250/300 W:200/300/500/1000	-0.0/+1.0mm	Annealed
Bar	φ1.0-φ200.0mm	Ground / Precision Ground	3M/PCS	h6-h9	Annealed
Wire	φ1.0-φ3.0mm	Ground / Precision Ground	1M/PCS	h6-h9	Annealed

Available Form	Diameter(mm)	Thickness(mm)	Surface
Titanium disc	φ98.0*T	10.0/12.0/14.0/16.0/18.0/20.0/22.0/25.0	Milling+Vacuum packaging
Titanium square plate	150140T；205145T； 250155T	10.0/12.0/14.0/16.0/18.0/20.0/22.0/25.0	Milling+Vacuum packaging

Datasheet

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.

It should be noted that Grade 5 Titanium is neither a low-cost material nor an easily formable one. It is a titanium alloy developed for applications requiring high strength, lightweight construction and reliable machinability.

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.

FAQs

Product FAQs

What type of titanium material is Ti-6Al-4V Grade 5?

Ti Grade 5 is a Ti-6Al-4V titanium alloy, not commercial pure titanium. It contains aluminium and vanadium, and has significantly higher strength than Ti Grade 1, Ti Grade 2, Ti Grade 3 and Ti Grade 4, making it suitable for components requiring strength, light weight and corrosion resistance.

When should Ti-6Al-4V Grade 5 be selected?

Ti Grade 5 should be selected when components require high strength, lightweight construction, good corrosion resistance and stable mechanical properties. It is commonly used in aerospace structural components, orthopaedic implants, spinal implants, medical device components, high-strength fasteners, precision mechanical parts and industrial structural components.

What is the difference between Ti-6Al-4V Grade 5 and Ti Grade 2?

Ti Grade 2 is commercial pure titanium, offering the advantages of good corrosion resistance, weldability and formability. Ti-6Al-4V Grade 5 is a titanium alloy with higher strength, making it more suitable for parts subject to high loads, requiring high strength and demanding superior structural performance.

How should one choose between Ti Grade 5 and Ti Grade 4?

Ti Grade 4 is the highest strength grade of commercial pure titanium, suitable for parts requiring high-strength pure titanium where biocompatibility is a priority. Ti-6Al-4V Grade 5 is a titanium alloy with higher strength, making it more suitable for high-strength structural components in aerospace, machinery and other applications. If the customer must use pure titanium, Grade 4 is the option; if the focus is on higher mechanical properties, Grade 5 is the choice.

What is the difference between Ti Grade 5 and Ti Grade 23?

Ti-6Al-4V Grade 23 is Ti-6Al-4V ELI, a low-element-interference (ELI) version with stricter controls on impurities such as oxygen, iron, carbon and nitrogen. For medical implant products with higher requirements for material purity, fracture toughness and implant standards, Ti Grade 23 is typically the preferred choice.

Is Ti-6Al-4V Grade 5 high in strength?

Yes. Ti-6Al-4V Grade 5 has significantly higher strength than commercial pure titanium grades and is a common choice for many high-strength titanium components. When purchasing, the tensile strength, yield strength, elongation, hardness and delivery condition should be confirmed against the drawings.

Is Ti-6Al-4V Grade 5 lightweight?

Yes. Ti-6Al-4V Grade 5 offers the low-density advantage of titanium whilst maintaining high strength, making it suitable for components requiring weight reduction without compromising strength.

Can Ti-6Al-4V Grade 5 be used for aerospace components?

Yes. Ti-6Al-4V Grade 5 is one of the titanium alloys commonly used in the aerospace sector, suitable for structural components, fasteners and precision parts where strength, weight, corrosion resistance and performance stability are required.

Can Ti-6Al-4V Grade 5 be used in medical products?

Yes. Ti-6Al-4V Grade 5 can be used in medical device components, surgical instruments, dental components and certain medical-related parts.

Can the performance of Ti Grade 5 be improved through heat treatment?

Yes. Ti-6Al-4V Grade 5 is an α+β titanium alloy, and its mechanical properties can be adjusted through appropriate heat treatment and processing conditions.

Is Ti-6Al-4V Grade 5 easy to machine?

It can be machined, but it is more difficult to machine than commercial pure titanium. Due to its high strength and low thermal conductivity, Ti-6Al-4V Grade 5 is prone to issues such as concentrated cutting heat, rapid tool wear and fluctuations in surface quality during machining.

Is Ti-6Al-4V Grade 5 suitable for welding?

Yes. Ti-6Al-4V Grade 5 can be welded, but inert gas shielding must be used during welding to prevent oxygen, nitrogen and hydrogen contamination of the weld zone. For high-strength structural components or medical parts, the welding process and post-weld quality requirements must be confirmed in advance.

Is Ti-6Al-4V Grade 5 suitable for complex forming?

It is not usually the preferred choice for complex deep drawing. Ti-6Al-4V Grade 5 has high strength, making it more difficult to form than commercial pure titanium. If parts require complex bending, deep drawing or significant deformation, the material condition, forming process and part geometry should be confirmed in advance.

What information is required when purchasing Ti-6Al-4V Grade 5?

It is recommended to provide the material standard, product form, dimensions, tolerances, surface finish, delivery condition, quantity and intended use. If the material is to be used in aerospace, medical, precision engineering or high-strength structural components, it is also recommended to provide drawings, performance requirements, inspection requirements and traceability requirements.

Typical Applications

Medical

Orthopedic instruments / Dental parts / Spinal instruments / External fixators / Implant-related structural parts

Aerospace

Aircraft structural parts / Engine parts / Blades / Brackets / Fasteners / Landing gear-related parts

Industrial

High-strength corrosion-resistant shafts / Chemical equipment parts / Marine fasteners / Sports equipment parts

Mechanical engineering

Lightweight robotic arms / Joint connectors / Weight-reduction structural parts / High-strength grippers / UAV/robot frames

Quality Services

ERP system management, full process traceability, and good batch stability.

Furnace numbering management ensures good material consistency.

Supports third-party testing and provides reports.

Chemical composition analysis (spectrometer analysis/oxygen, nitrogen, and hydrogen analyzer)

Mechanical properties (electronic tensile testing machine/Rockwell & Vickers hardness tester/impact testing machine)

Flaw detection (UT flaw detection)

Tissue examination (metallurgical microscope/electron microscope)

Heat treatment verification

Explore Quality Services

Manufacturing services

Precision Tolerance Control

Tolerances customized (H6-H9 grade)

Cut-to-Size Service

Length and width customized (0.1M-3M or slit/cut to order)

CNC Pre-Machining

chamfering/face treatment/grinding/turning/milling

Custom Dimensions Available

Custom sizes available (any non-standard dimensions can be customized)

Dimensional and Precision Control

straightness/roundness/coaxiality/dimensional tolerance records

Customized Heat Treatment

providing heat treatment based on material properties to achieve the desired delivery condition

Surface Control

roughness/fine grinding/film application on substrate

Marking and Coding Services

laser marking/inkjet coding

Shipping Packaging

Custom Size/Separate Boxes/Long-Distance Transportation

Explore Manufacturing Services

Engineering and Technical Support Services

Explore Engineering Support

Support for medical industry applications

Supports OEM/OEM drawing processing

Material selection and alternative solutions

Tool Selection

Customized heat treatment solutions

Cost optimization

Industry-supporting resource consulting

Business & Supply Chain Services

Free samples, rapid verification

Comprehensive Product Range:We offer a wide range of products and can quickly provide samples that meet your requirements. Free trials are also available depending on your needs.

Supports small batch production and flexible MOQ

Our comprehensive product range is in stock, which can support small-batch sampling and increase flexibility.

24-Hour Quotation Response

An excellent sales and technical support team is available to provide you with dedicated service 24 hours a day.

Stable Supply Chain Production System

Stable raw material sources ensure batch consistency control. Safety stock is maintained, and production is managed according to ISO 13485 and ISO 9001 standards.