TIMETAL 6-2-4-6 Titanium Alloy (Ti-6Al-2Sn-4Zr-6Mo), Beta Forged + STA

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

Key Words: UNS R56260

Component   Wt. %
Al5.5 - 6.5 
CMax 0.04 
FeMax 0.15 
HMax 0.125 
Component   Wt. %
Mo5.5 - 6.5 
N Max 0.04 
OMax 0.15 
Component   Wt. %
Sn1.75 - 2.25 
Ti79.4 - 83.7 
Zr3.6 - 4.4 

Material Notes:
Titanium content above is calculated as the remainder and may not reflect the actual range.

This entry has UTS, TYS, Elongation, ROA, and fatigue values specific to material in the Beta Forged + STA (885C/1hr/AC + 595C/8hr/AC) condition. Other data below are typical of TIMETAL 6-2-4-6.

High-Strength, Intermediate Temperature Alloy

Features: TIMETAL 6-2-4-6 is a stronger derivative of TIMETAL 6-2-4-2 offering higher strength, depth hardenability and elevated temperature properties up to 450C. This alloy is similar in forgeability and crack sensitivity to TIMETAL 6-4. This alloy is used in intermediate compressor stages of turbine engines for disks and blades, seals, and for airframe parts. It is nonmagnetic.

Data provided by TIMET.

Physical PropertiesMetricEnglishComments
Density4.64 g/cc0.168 lb/in Typical

Mechanical Properties
Tensile Strength, Ultimate1199 MPa174000 psi 
Tensile Strength, Yield1047 MPa152000 psi 
Elongation at Break7 %7 % 
Reduction of Area13 %13 % 
Modulus of Elasticity115 GPa16700 ksi Typical
Fatigue Strength262 MPa38000 psi Notched; 10^7 cycles
Fatigue Strength675 MPa97900 psi Smooth; 10^7 cycles

Electrical Properties
Electrical Resistivity0.00019 - 0.000205 ohm-cm0.00019 - 0.000205 ohm-cm 

Thermal Properties
CTE, linear 20C9 m/m-C5 in/in-F 20-100C
Specific Heat Capacity0.502 J/g-C0.12 BTU/lb-F 
Thermal Conductivity7.61 W/m-K52.8 BTU-in/hr-ft-F 
Melting Point1595 - 1675 C2900 - 3050 F 
Solidus1595 C2900 F 
Liquidus1675 C3050 F 
Beta Transus940 C1720 F 

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