Ti-5Al-2.5Sn (Grade 6) (UNS R54520)
All-alpha titanium alloy with excellent weldability and stability from cryogenic to elevated temperatures.
- UNS
- R54520
- W.Nr / EN
- Ti5Al2.5Sn
- Density
- 4.48 g/cm³
- Service range
- Cryogenic to ~480 °C
About Ti-5Al-2.5Sn (Grade 6)
Ti-5Al-2.5Sn is an all-alpha alloy: it cannot be strengthened by heat treatment, but in exchange it offers uniform, stable properties, excellent weldability and good creep resistance to about 480 °C. Its ELI variant is a classic material for liquid-hydrogen service.
The alloy suits welded assemblies and elevated-temperature static hardware where alpha-beta grades would need heat-treatment control. DMK Alloys supplies Grade 6 bars, blanks and components in the annealed condition.
Ti-5Al-2.5Sn (Grade 6) chemical composition (weight %)
| Element | Limit / range |
|---|---|
| Ti | Balance |
| Al | 4.0 – 6.0 |
| Sn | 2.0 – 3.0 |
| Fe | ≤ 0.50 |
| O | ≤ 0.20 |
| C | ≤ 0.08 |
| N | ≤ 0.03 |
| H | ≤ 0.015 |
Composition limits per the commonly referenced standards listed below. Order-specific limits may differ — confirm against the governing specification.
Ti-5Al-2.5Sn (Grade 6) mechanical properties (typical)
| Condition / form | Tensile, MPa | 0.2% Yield, MPa | Elongation, % |
|---|---|---|---|
| Bar, annealed, room temp. | ≥ 828 | ≥ 793 | ≥ 10 |
Values are typical or specification-minimum levels for guidance only — not a guarantee of properties. Certified values are established by testing against the ordered specification.
Ti-5Al-2.5Sn (Grade 6) specifications & international equivalents
| System | Designation | Covers |
|---|---|---|
| UNS | R54520 | All product forms |
| AMS | AMS 4926 | Bars, forgings |
| AMS | AMS 4910 | Sheet, strip, plate |
| ASTM | ASTM B265 Grade 6 | Sheet, plate |
Cross-references are for guidance; the governing document is always the specification cited on your purchase order or drawing.
Ti-5Al-2.5Sn (Grade 6) physical properties
| Property | Typical value |
|---|---|
| Density | 4.48 g/cm³ |
| Melting range | ≈ 1590 °C |
| Modulus of elasticity (family-typical) | ≈ 105 – 115 GPa |
| Indicative service range | Cryogenic to ~480 °C |
Forms we manufacture
- Bars
- Forged blanks
- Components to drawing
Dimensional ranges and delivery conditions are confirmed per enquiry.
Where Ti-5Al-2.5Sn (Grade 6) earns its keep
Typically specified for:
- Engine cases
- Welded static structures
- Cryogenic hardware (ELI variant)
Also consider
Titanium Grade 2
UNS R50400 · W.Nr 3.7035AMS 4902 · ASTM B348 Grade 2
The standard commercially pure titanium: the industry's default balance of strength, formability and corrosion resistance.
Ti-6Al-4V (Grade 5)
UNS R56400 · W.Nr 3.7165AMS 4928 · AMS 4911
The world's workhorse titanium alloy — the strength-to-weight benchmark for airframe and engine components.
Ti-6Al-2Sn-4Zr-2Mo
UNS R54620AMS 4975 · AMS 4976
Near-alpha high-temperature titanium alloy for compressor sections running hotter than Ti-6Al-4V allows.
Request Ti-5Al-2.5Sn (Grade 6) to your specification
State the governing standard, form, dimensions, quantity and testing requirements — the export team responds with a manufacturer's quotation.