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. % Al 5   Fe Max 0.25   O Max 0.12   Sn 2.5   Ti 92.5

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

Physical Properties	Metric	English	Comments
Density	4.48 g/cc	0.162 lb/in³
Mechanical Properties
Hardness, Brinell	311	311	Estimated from Rockwell C.
Hardness, Knoop	337	337	Estimated from Rockwell C.
Hardness, Rockwell C	33	33
Hardness, Vickers	325	325	Estimated from Rockwell C.
Tensile Strength, Ultimate	775 MPa	112000 psi
Tensile Strength, Yield	720 MPa	104000 psi
Elongation at Break	15 %	15 %
Modulus of Elasticity	110 GPa	16000 ksi	in tension.
Notched Tensile Strength	1080 MPa	157000 psi	Kt (stress concentration factor) = 6.3
Poisson's Ratio	0.31	0.31	Typical for alpha titanium alloy.
Charpy Impact	44 J	32.5 ft-lb	V-notch
Fatigue Strength	410 MPa	59500 psi	1E+7 cycles
Fracture Toughness	88 MPa-m½	80.1 ksi-in½	KIC
Shear Modulus	48 GPa	6960 ksi	Standard Ti-5-2.5
Electrical Properties
Electrical Resistivity	0.00016 ohm-cm	0.00016 ohm-cm
Thermal Properties
CTE, linear 20°C	9.4 µm/m-°C	5.22 µin/in-°F	0-100ºC
CTE, linear 250°C	9.5 µm/m-°C	5.28 µin/in-°F	Average over the range 0-315ºC
Specific Heat Capacity	0.53 J/g-°C	0.127 BTU/lb-°F	0.674 J/g-ºC at 315ºC
Thermal Conductivity	7.8 W/m-K	54.1 BTU-in/hr-ft²-°F
Melting Point	Max 1590 °C	Max 2890 °F	Liquidus
Liquidus	1590 °C	2890 °F
Beta Transus	1040 - 1090 °C	1900 - 1990 °F

References for this datasheet.