Grade 5 Titanium Foil: Composition, Properties and Applications
- Grade 5 Titanium Foil
Grade 5 titanium foil is associated with the Ti-6Al-4V alloy designation. It may be considered where a thin titanium alloy product is needed, but the properties and suitability of a specific foil depend on its standard, condition, dimensions and processing. A grade label alone does not establish a fixed strength, fatigue life or service temperature.
Grade and standard
Grade 5 is designated UNS R56400 in ASTM B265, which covers annealed titanium and titanium alloy strip, sheet and plate. Confirm whether the ordered foil form and dimensions fall within the relevant specification and edition. If a project specifies another standard or condition, identify those requirements in the order. A reference to a standard does not establish that a particular lot conforms to it; review the agreed material certificate.
Grade 5 and Grade 5 ELI have different designation and specification requirements. They should not be substituted merely because both are titanium alloys.
Properties depend on the product
| Property | What to review |
|---|---|
| Chemical composition | The applicable standard, contracted limits and lot certificate. |
| Tensile properties | Material condition, specimen orientation and reported results. |
| Formability | Thickness, rolling direction, bend geometry and representative trials. |
| Fatigue and temperature | Actual load, environment and evidence appropriate to the finished part. |
Do not transfer a numerical tensile, fatigue or fracture result from a different product form or heat-treatment condition. For elevated-temperature service, establish temperature, exposure and loading, then evaluate relevant data for the material and part.
Processing and applications
When specifying foil for forming, joining or surface treatment, provide the drawing, thickness and width tolerances, surface and edge requirements, delivery condition and expected operations. Verify processing on representative material and agree the finished-part acceptance criteria. Exact manufacturing capability and lead time should be confirmed for each order.
Aerospace, medical-device and industrial components can require different standards and qualification. A material certificate does not by itself establish finished-device biological safety, MRI conditions, clinical outcomes or aerospace approval.
Frequently asked questions
Does ASTM B265 automatically apply to every product called foil?
No. Confirm the product form, dimensions, condition and contracted edition against the specification.
Can a Grade 5 certificate predict component fatigue life?
No. Fatigue depends on loading, geometry, surface and manufacturing history and needs separate assessment.
Explore the titanium foil category or request a quotation with your dimensions, specification and documentation requirements.
Published by: Titanium Valleys
Technical review: General Manager of the Production Department
Quality review: Quality Inspection Department
Last reviewed: October 20, 2026 (before the latest content update; the updated content is pending review).