Metals & alloys · Titanium & zirconium alloys
Ti–6Al–2Sn–4Zr–2Mo / Ti-6242
A near-alpha titanium alloy developed for creep strength, fatigue resistance and microstructural stability in compressor and hot-structure applications.
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01
Overview
- Material class
- Metals & alloys
- Category
- Titanium & zirconium alloys
- Family
- Near-Alpha Titanium Alloy
- Product forms
- Sheet/plate, Bar/rod
Composition
| Constituent | Min | Max | Typical | Note |
|---|---|---|---|---|
| Al | 5.5 | 6.5 | 6 | |
| Sn | 1.8 | 2.2 | 2 | |
| Zr | 3.6 | 4.4 | 4 | |
| Mo | 1.8 | 2.2 | 2 | |
| Si | 0.13 | 0.08 | ||
| Ti | Balance |
02
Properties and conditions
Engineering properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Density | 4.54 | g/cm³ | Representative; verify product form and condition |
| Elastic modulus | 114 | GPa | Representative; verify product form and condition |
| Yield strength | ~830–1000 | MPa | Representative; verify product form and condition |
| Tensile strength | ~930–1100 | MPa | Representative; verify product form and condition |
| Creep service | to ~500 | °C | condition dependent |
| Fatigue resistance | high | microstructure dependent |
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
- Compressor disks
- Hot airframe structures
- Aerospace forgings
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 |
|---|---|---|
| UNS | R54620 | |
| AMS | 4919 / 4975 | product dependent |
05
Sources and context
Sources
- Titanium alloy aerospace product dataExisting reference
- NASA materials selection resourcesApplication 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.