Metals & alloys · Titanium & zirconium alloys
Ti–5Al–5Mo–5V–3Cr / Ti-5553
A high-strength metastable-beta titanium alloy used for large aerospace forgings and landing-gear structures requiring thick-section hardenability and fracture performance.
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01
Overview
- Material class
- Metals & alloys
- Category
- Titanium & zirconium alloys
- Family
- Metastable Beta Titanium Alloy
- Product forms
- Sheet/plate, Bar/rod
Composition
| Constituent | Min | Max | Typical | Note |
|---|---|---|---|---|
| Al | 4.4 | 5.7 | 5 | |
| Mo | 4 | 5.5 | 5 | |
| V | 4 | 5.5 | 5 | |
| Cr | 2.5 | 3.5 | 3 | |
| Fe | 0.5 | 0.3 | ||
| Ti | Balance |
02
Properties and conditions
Engineering properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Density | ~4.65 | g/cm³ | Representative; verify product form and condition |
| Elastic modulus | ~110 | GPa | Representative; verify product form and condition |
| Yield strength | ~1050–1250 | MPa | aged |
| Tensile strength | ~1150–1350 | MPa | Representative; verify product form and condition |
| Fracture toughness | high | heat-treatment dependent | |
| Hardenability | high | thick sections |
Conditions
Representative supplied condition
Condition not fully specified in the source record.
03
Processing and use
Processing
- Product form, thermal history and manufacturing route materially affect performance.
Applications
- Landing-gear components
- Large forgings
- High-strength airframe fittings
Selection considerations
- Use the current governing standard and supplier certification for design or procurement.
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04
Standards and related materials
Standards and designations
| System | Designation | Note |
|---|---|---|
| AMS | 7025 / 7026 | product dependent |
| Industry | Ti-5553 |
05
Sources and context
Sources
- Aerospace titanium alloy technical literatureExisting reference
- NASA materials selection resourcesApplication reference
- U.S. Department of Energy lightweight materials programApplication reference
Confirm the applicable specification, product form and condition before using values for design or procurement.
Supply and sustainability
Availability and lead time depend on grade, product form, certification and regional supply chain.
Segregated recovery and closed-loop recycling improve material efficiency where practical.