Titanium Grade 5 Chemical Composition and Mechanical Properties

Titanium Grade 5 Chemical Composition

Titanium Grade 5, also known as Ti-6Al-4V or UNS R56400, is one of the most widely used titanium alloys for demanding engineering applications. Its combination of high strength, relatively low density and corrosion resistance makes it suitable for selected aerospace, industrial, marine and precision-engineering components.

For engineers, purchasers and manufacturers, understanding the chemical composition and mechanical properties of Titanium Grade 5 is essential before specifying or purchasing the material. Properties can vary with product form, dimensions, heat treatment and the applicable material standard.

Manan Steel & Metals welcomes industrial enquiries for specialty metals. Buyers looking for Titanium Grade 5 round bar or other specified product forms can submit their requirements for an availability review.

What Is Titanium Grade 5?

Titanium Grade 5 is an alpha-beta titanium alloy primarily composed of titanium, aluminium and vanadium.

Its common designations include:

  • Material grade: Titanium Grade 5
  • Alloy name: Ti-6Al-4V
  • UNS designation: R56400
  • Common bar and billet specification: ASTM B348, where applicable
  • Common aerospace specification: AMS 4928, where applicable

The correct standard depends on the product form and application. A material supplied to one specification should not automatically be assumed to satisfy another.

Titanium Grade 5 should also be distinguished from commercially pure titanium grades and Grade 23 (Ti-6Al-4V ELI), which has different requirements for interstitial elements and is commonly specified for particular demanding applications.

Titanium Grade 5 Chemical Composition

The alloying elements in Titanium Grade 5 contribute to its strength and overall performance. Aluminium acts as an alpha stabiliser, while vanadium acts as a beta stabiliser, helping produce the alloy’s characteristic alpha-beta microstructure.

The following table provides a general composition reference.

ElementTypical specification limits, weight %
Aluminium5.50–6.75
Vanadium3.50–4.50
IronMaximum depends on the applicable specification; commonly 0.30–0.40
OxygenMaximum commonly 0.20
CarbonMaximum commonly 0.08
NitrogenMaximum commonly 0.05
HydrogenMaximum depends on the applicable specification; commonly 0.015
TitaniumBalance

Important: These figures are a general reference, not a substitute for the governing standard. Buyers should confirm the applicable composition limits for their specified product and condition using current technical documentation and the material test certificate.

Mechanical Properties of Titanium Grade 5

The mechanical properties of Titanium Grade 5 depend on the applicable specification, product dimensions, manufacturing route and material condition.

Commonly referenced mechanical properties include:

Tensile strength

Tensile strength measures the maximum stress a material withstands during a tensile test before fracture-related failure occurs. Titanium Grade 5 is known for its high strength relative to its weight.

Yield strength

Yield strength indicates the stress at which a material begins to deform plastically according to the test method and specified definition. It is important when engineers assess whether a component can withstand its intended loading.

Elongation

Elongation indicates the material’s extension during a tensile test and provides information about its ductility. The specified minimum depends on the product and applicable standard.

Hardness

Hardness measures resistance to local indentation or deformation. It may be used as part of material verification, but hardness alone does not establish full compliance with a mechanical-property specification.

Density

Titanium Grade 5 has a density of approximately 4.43 g/cm³. This relatively low density is one reason the alloy is selected for components where weight reduction is important.

For engineering design or acceptance testing, use the property limits defined by the exact specification and supplied material condition. Generic datasheet values should not replace certified results when a purchase specification requires them.

Why Does Titanium Grade 5 Have High Strength?

Titanium Grade 5 derives its strength from its alloy chemistry and controlled microstructure.

The addition of aluminium and vanadium allows the material to achieve a useful balance of strength, ductility and other engineering properties. Processing and heat treatment can further influence its final mechanical behaviour.

However, not every Titanium Grade 5 product has identical properties. A bar, plate, forging or finished component may have different requirements and test results depending on the relevant standard and manufacturing history.

For this reason, purchasers should specify the product form and condition rather than requesting only “Titanium Grade 5.”

Titanium Grade 5 Corrosion Resistance

Titanium Grade 5 develops a protective oxide layer that contributes to its corrosion resistance in many environments.

Its suitability depends on the actual service conditions, including:

  • Chemical composition and concentration of the medium.
  • Operating temperature.
  • Presence of crevices or deposits.
  • Galvanic contact with other materials.
  • Flow conditions and other environmental factors.

The alloy should not be assumed to resist every acid, chemical or industrial environment. For critical service, consult qualified corrosion-engineering guidance and verify compatibility with the intended application.

The Effect of Heat Treatment on Titanium Grade 5 Properties

Heat treatment and processing conditions can influence the microstructure and mechanical properties of Titanium Grade 5.

Depending on the governing specification and intended use, the material may be supplied in a defined annealed or other specified condition. Different processing routes can affect strength, ductility and microstructural characteristics.

Before purchasing, confirm:

  • The required material condition.
  • Any mandatory heat-treatment requirements.
  • Mechanical-property acceptance criteria.
  • Applicable testing and documentation.
  • Whether any subsequent processing could affect the final component properties.

Do not select a heat-treatment cycle based solely on a generic online table. Follow the applicable standard and a qualified procedure.

How to Verify Titanium Grade 5 Material Quality

For industrial procurement, material verification should include both identification and compliance with the purchase requirements.

1. Check the material designation

Confirm that the material is specified as Titanium Grade 5 / Ti-6Al-4V and that the designation matches the required standard.

2. Review the material test certificate

Where required, check the certificate for the supplied material’s chemical composition, applicable mechanical test results and heat or batch identification.

3. Confirm the product form and dimensions

Verify that the supplied bar, plate or other product form matches the order, including size and tolerances.

4. Verify traceability requirements

For applications requiring traceability, confirm that the material identification corresponds to the relevant documentation and supplied batch.

5. Confirm acceptance criteria before ordering

Make sure the required condition, mechanical properties, tests and documentation are clearly stated in the purchase order.

These checks help reduce the risk of ordering a material that meets the trade-name description but does not satisfy the project’s complete specification.

What Should Buyers Specify When Ordering Titanium Grade 5?

A complete enquiry helps a supplier review the requirement accurately. Include:

  • Grade: Titanium Grade 5 / Ti-6Al-4V.
  • Designation: UNS R56400, where applicable.
  • Standard: ASTM B348, AMS 4928 or the exact specification required by the project.
  • Product form: Round bar, plate, sheet or another required form.
  • Dimensions: Diameter, thickness, length, width and tolerances as applicable.
  • Quantity: Number of pieces, total length or required weight.
  • Material condition: As specified by the drawing or purchase requirement.
  • Documentation: Material test certificate and any required inspection or traceability records.
  • Delivery details: Destination and required delivery date.

If the component has a drawing or a customer-approved material specification, include it with the enquiry to minimise ambiguity.

Enquire About Titanium Grade 5 with Manan Steel & Metals

Manan Steel & Metals supports industrial enquiries for specialty metals and engineering materials.

If you require Titanium Grade 5 round bar or another specified product form, send your grade, standard, dimensions, quantity and documentation requirements for an availability review and quotation discussion.

Contact Manan Steel & Metals

Request a quotation: Share the exact Titanium Grade 5 specification and dimensions so your requirement can be reviewed accurately.

Frequently Asked Questions About Titanium Grade 5 Properties

What is the chemical composition of Titanium Grade 5?

Titanium Grade 5 primarily contains titanium, approximately 5.50–6.75% aluminium and 3.50–4.50% vanadium, with controlled limits for other elements. Confirm the precise limits against the applicable specification.

What is the UNS number for Titanium Grade 5?

The commonly referenced UNS designation for Titanium Grade 5 is R56400.

What is the density of Titanium Grade 5?

Its density is approximately 4.43 g/cm³. Use the value required by the governing design standard for calculations.

Are Titanium Grade 5 and Grade 23 the same?

No. Both are based on Ti-6Al-4V chemistry, but Grade 23 (Ti-6Al-4V ELI) has different requirements, particularly for interstitial elements. They should not be treated as interchangeable without checking the applicable specification.

Does Titanium Grade 5 have the same mechanical properties in every product form?

No. Mechanical properties depend on the applicable standard, product form, dimensions, processing route and supplied condition. Refer to the governing specification and material test certificate for the actual requirement.

What certificate should I request when buying Titanium Grade 5?

Where required by the purchase specification, request a material test certificate containing the applicable chemical and mechanical test information and material identification. Confirm the required document type before placing the order.

Technical References

Use the current governing standard and the documentation supplied with the actual material for engineering decisions.