Titanium Ti-6Al-2Sn-4Zr-2Mo (Ti-6-2-4-2), Sheet


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: Ti6Al2Sn4Zr2Mo, Ti-6242; Ti-6-2-4-2; UNS R54620

Component   Wt. %
Al6 
Mo2 
Ti88 
Zr4 

Material Notes:
Unspecified heat treatment. Alpha Alloy. Silicon is often added to improve creep resistance (See Ti-6242S).

Applications: High-temp jet engines. Blades, discs, spacers, seals. High performance automotive valves.

Physical PropertiesMetricEnglishComments
Density4.54 g/cc0.164 lb/in 

Mechanical Properties
Hardness, Brinell318318 Estimated from Rockwell C.
Hardness, Knoop346346 Estimated from Rockwell C.
Hardness, Rockwell C3434 Estimated from similar materials
Hardness, Vickers333333 Estimated from Rockwell C.
Tensile Strength, Ultimate1010 MPa146000 psi 
Tensile Strength, Yield990 MPa144000 psi 
Elongation at Break3 %3 % 
Modulus of Elasticity120 GPa17400 ksi In Tension
Compressive Yield Strength1080 MPa157000 psi 0.2 % Permanent Set
Compressive Modulus130 GPa18900 ksi 
Poisson's Ratio0.320.32 duplex annealed
Fracture Toughness148 MPa-m135 ksi-in Plane-Strain
Shear Modulus45.5 GPa6600 ksi Calculated
Shear Strength690 MPa100000 psi Ultimate shear strength

Electrical Properties
Electrical Resistivity0.00019 ohm-cm0.00019 ohm-cm 

Thermal Properties
CTE, linear 20C7.7 m/m-C4.28 in/in-F 20-100C
CTE, linear 250C8.1 m/m-C4.5 in/in-F Average over the range 20-315C
CTE, linear 500C8.1 m/m-C4.5 in/in-F Average over the range 20-540C
Specific Heat Capacity0.46 J/g-C0.11 BTU/lb-F 
Thermal Conductivity7.1 W/m-K49.3 BTU-in/hr-ft-F 
Melting PointMax 1700 CMax 3090 F Liquidus; Estimated from similar materials
Liquidus1700 C3090 F Estimated from similar materials
Beta Transus990 C1810 F 

References for this datasheet.


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