Titanium Grade 5 Ti-6Al-4V: The Ultimate Lightweight Alloy

In the world of advanced engineering and high-performance materials, Titanium Grade 5 (Ti-6Al-4V) is widely regarded as the ultimate lightweight alloy. Known for its exceptional strength-to-weight ratio, corrosion resistance, and biocompatibility, this alloy is a top choice across industries like aerospace, medical, automotive, and chemical processing.

Whether you’re researching titanium grades or comparing Grade 23 titanium vs Grade 5, this guide provides a deep dive into Ti-6Al-4V properties, applications, and where to source titanium tubes and fittings in India.

What Is Ti-6Al-4V (Titanium Grade 5)?

Ti-6Al-4V (Titanium Grade 5) is an alpha-beta titanium alloy consisting of 90% titanium, 6% aluminum, and 4% vanadium. It combines the lightness of titanium with the added strength from alloying elements, resulting in a material that is 30% stronger than pure titanium yet just as corrosion-resistant.

It is also referred to by various designations:

UNS R56400
AMS 4911
ASTM B348 (for bars)

Element	Percentage (%)
Titanium (Ti)	Balance
Aluminum (Al)	5.5 – 6.75
Vanadium (V)	3.5 – 4.5
Iron (Fe)	≤ 0.40
Oxygen (O)	≤ 0.20
Carbon (C)	≤ 0.08
Nitrogen (N)	≤ 0.05
Hydrogen (H)	≤ 0.015

Ti-6Al-4V Mechanical Properties

Property	Value
Density	4.43 g/cm³
Tensile Strength	900 – 1100 MPa
Yield Strength	~830 MPa
Elongation at Break	~10%
Modulus of Elasticity	~114 GPa
Hardness (Rockwell C)	36 – 41
Melting Point	1604–1660°C

These values make Ti-6Al-4V, a high-strength titanium alloy, an excellent material for load-bearing, high-stress, and temperature-critical applications.

Where Is Titanium Grade 5 Used?

Industry	Applications
Aerospace	Engine components, airframes, turbine blades
Medical	Bone implants, surgical instruments, dental fixtures
Automotive	Performance exhausts, connecting rods, wheel hubs
Marine	Offshore components, fasteners, heat exchangers
Chemical	Reactors, piping systems, heat exchangers

Common Product Forms of Ti-6Al-4V

Form	Standard/Spec	Usage
Titanium Round Bar	ASTM B348	Machined parts, shafts
Titanium Sheets/Plates	ASTM B265	Aerospace panels, armor
Titanium Fittings	ASME B16.9/B16.11	Corrosion-resistant pipe connections
Titanium Tubes	ASTM B338	Condensers, heat exchangers, surgical tubes

Ti-6Al-4V vs Other Titanium Grades

Feature	Grade 5 (Ti-6Al-4V)	Grade 23 (Ti-6Al-4V ELI)
Strength	Higher	Slightly lower
Ductility	Good	Better
Biocompatibility	High	Superior (used in implants)
Oxygen Content	~0.2%	~0.13%
Typical Use	Aerospace, marine	Medical implants

Choose Grade 5 titanium alloy for performance-driven applications, such as aerospace or marine, and Grade 23 titanium grade for implantable medical components due to higher purity and ductility.

Ti-6Al-4V Density and Strength-to-Weight Advantage

The low density of 4.43 g/cm³ (compared to 7.8 g/cm³ for steel) makes the titanium alloy Ti-6Al-4V ideal for weight-sensitive designs.

Chart: Titanium Grade 5 vs Steel

Property	Ti-6Al-4V	Stainless Steel (304)
Density (g/cm³)	4.43	7.9
Tensile Strength (MPa)	1000	505
Corrosion Resistance	Excellent	Good
Cost (Approx.)	Higher	Moderate

Need High-Performance Titanium Products?

Looking for Titanium Grade 5 tubes, fittings, or forged bars?
Contact leading titanium tube suppliers in India offering:

ASTM B348 and B338 compliant products
Custom machining and cutting
Global export and MTC documentation

Boost your project’s performance with materials that offer maximum strength, corrosion resistance, and lightness.

Final Thoughts

Titanium Grade 5 Ti-6Al-4V is the ultimate lightweight alloy because it perfectly balances mechanical strength, low density, and excellent corrosion resistance. Whether you’re building an aircraft structure, a marine shaft, or a biomedical tool, Ti-6Al-4V delivers unmatched reliability in critical applications.
Choose it when failure is not an option, and make sure you partner with certified titanium suppliers in India to ensure quality and performance.

FAQs

What are the key properties of Ti-6Al-4V?

High-strength titanium alloys offer excellent corrosion resistance, biocompatibility, lightweight, and thermal stability.

What is the density of Ti-6Al-4V?

The density of the titanium alloy Ti-6Al-4V is approximately 4.43 g/cm³, making it nearly half the weight of stainless steel and ideal for aerospace applications.

How does Grade 23 compare to Grade 5 titanium?

Grade 23 titanium alloy, with its lower oxygen content, offers better ductility and fatigue strength, making it the preferred choice for biomedical implants, while Grade 5 is favored in aerospace and structural components.

Who are the leading titanium pipe and tube manufacturers in India?

Many Indian manufacturers provide ASTM B338-compliant tubes and fittings made from high-strength titanium alloys, supplying to global aerospace and defense contractors. Always check for ISO and PED certifications.

Can Ti-6Al-4V be welded?

Yes, but it requires inert shielding gases (argon/helium) and controlled preheating to avoid contamination and ensure mechanical strength.