TIMET TIMETAL® 6-2-4-2 (Ti-6Al-2Sn-4Zr-2Mo-0.08Si) Titanium Alloy

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TIMET TIMETAL® 6-2-4-2 (Ti-6Al-2Sn-4Zr-2Mo-0.08Si) Titanium Alloy
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy
Material Notes:	Medium-Strength, Elevated Temperature Alloy Industry Specifications: USA Aerospace: AMS 4919. Features: TIMETAL 6-2-4-2 has good tensile creep and fatigue properties up to 540°C. It is the most commonly used high temperature alloy in jet engine compressors and airframe structures. It is also used in sheet melt form for engine afterburner structure and for various hot airframe skin applications. It is nonmagnetic. Typical heat treatment for this alloy: Rough forging: 1038°C. Stress relief anneal: 482-649°C for 1-4 hrs, air cool. Solution treatment: 15-30°C below beta transus for 1 hour, water quench. Aging: 538-593°C for 8 hrs, air cool. Data provided by TIMET.
Key Words:	UNS R54620
Vendors:	Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494. Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
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Physical Properties	Original Value	Comments

Density	4.54 g/cc	Typical

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	1000 MPa	Typical
Tensile Strength, Yield	895 MPa @Strain 0.2 %	Typical
Elongation at Break	12 %	Typical
Reduction of Area	42 %
Modulus of Elasticity	115 GPa	Typical
Fatigue Strength	500 MPa	Limit; test specifics not reported
	500 MPa	Limit; test specifics not reported
Bend Radius, Minimum	4.5 t	Typical; on 0.078 in (2 mm) sheet

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000185 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	7.70 µm/m-°C @Temperature 0.000 - 100 °C
Thermal Conductivity	6.92 W/m-K
Melting Point	<= 1705 °C
Liquidus	1705 °C
Maximum Service Temperature, Air	538 °C	Long Term
Beta Transus	996 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	5.5 - 6.5 %
Carbon, C	<= 0.080 %
Hydrogen, H	0.010 - 0.0125 %
Iron, Fe	<= 0.25 %
Molybdenum, Mo	1.8 - 2.2 %
Nitrogen, N	<= 0.050 %
Oxygen, O	<= 0.15 %
Silicon, Si	0.060 - 0.13 %
Tin, Sn	1.8 - 2.2 %
Titanium, Ti	83.6 - 87.2 %	Calculated as remainder
Zirconium, Zr	3.6 - 4.4 %

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NTIME6242 / 19307

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