Metals & alloys · Ferrous alloys
14YWT oxide-dispersion-strengthened steel
A nanostructured ferritic Fe–Cr–W–Ti–Y2O3 alloy investigated for advanced fission and fusion systems requiring radiation tolerance and high-temperature creep strength.
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01
Overview
- Material class
- Metals & alloys
- Category
- Ferrous alloys
- Family
- ODS Ferritic Nuclear Steel
- Product forms
- Sheet/plate, Bar/rod
Composition
| Constituent | Min | Max | Typical | Note |
|---|---|---|---|---|
| Cr | 13.5 | 14.5 | 14 | |
| W | 2.5 | 3.5 | 3 | |
| Ti | 0.2 | 0.5 | 0.4 | |
| Y2O3 | 0.2 | 0.4 | 0.3 | |
| Fe | Balance |
02
Properties and conditions
Engineering properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Density | ~7.7 | g/cm³ | Representative; verify product form and condition |
| Elastic modulus | ~200 | GPa | Representative; verify product form and condition |
| Creep resistance | very high | nanostructure dependent | |
| Radiation tolerance | promising | research status | |
| Service temperature | >650 | °C | targeted |
| Manufacturing | powder metallurgy | mechanical alloying + consolidation |
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
- Advanced reactor cladding concepts
- Fusion blanket structures
- Irradiation research
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 |
|---|---|---|
| Research | 14YWT / nanostructured ferritic alloy |
05
Sources and context
Sources
- U.S. Department of Energy critical materials programStrategic reference
- U.S. Nuclear Regulatory Commission materials 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.
Strategic context
Critical inputs: Yttrium, Tungsten
Basis: EU Critical Raw Materials Act framework; USGS critical minerals framework; US DOE Critical Materials List and assessment