Titanium Ti-5Al-2.5Sn, ELI, Annealed


Subcategory: Alpha/Near Alpha Titanium Alloy; Metal; Nonferrous Metal; Titanium Alloy

Close Analogs: 1 other heat treatment of this alloy is in Matweb.

Key Words: UNS R54521 (ELI); Ti-5-2.5

Component   Wt. %
Al5 
FeMax 0.25 
OMax 0.12 
Sn2.5 
Ti92.5 

Material Notes:
Annealed 700-870C for 15 min-4 hr.

Physical PropertiesMetricEnglishComments
Density4.48 g/cc0.162 lb/in 

Mechanical Properties
Hardness, Brinell311311 Estimated from Rockwell C.
Hardness, Knoop337337 Estimated from Rockwell C.
Hardness, Rockwell C3333 
Hardness, Vickers325325 Estimated from Rockwell C.
Tensile Strength, Ultimate775 MPa112000 psi 
Tensile Strength, Yield720 MPa104000 psi 
Elongation at Break15 %15 % 
Modulus of Elasticity110 GPa16000 ksi in tension.
Notched Tensile Strength1080 MPa157000 psi Kt (stress concentration factor) = 6.3
Poisson's Ratio0.310.31 Typical for alpha titanium alloy.
Charpy Impact44 J32.5 ft-lb V-notch
Fatigue Strength410 MPa59500 psi 1E+7 cycles
Fracture Toughness88 MPa-m80.1 ksi-in KIC
Shear Modulus48 GPa6960 ksi Standard Ti-5-2.5

Electrical Properties
Electrical Resistivity0.00016 ohm-cm0.00016 ohm-cm 

Thermal Properties
CTE, linear 20C9.4 m/m-C5.22 in/in-F 0-100C
CTE, linear 250C9.5 m/m-C5.28 in/in-F Average over the range 0-315C
Specific Heat Capacity0.53 J/g-C0.127 BTU/lb-F 0.674 J/g-C at 315C
Thermal Conductivity7.8 W/m-K54.1 BTU-in/hr-ft-F 
Melting PointMax 1590 CMax 2890 F Liquidus
Liquidus1590 C2890 F 
Beta Transus1040 - 1090 C1900 - 1990 F 

References for this datasheet.


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