6Al-2Sn-4Mo-2Sn, more commonly referred to as 6-2-4-2 Alloy, is a near-alpha high strength titanium alloy that shows a good combination of toughness, tensile strength and creep strength. It shows long term stability at temperatures up to 800°F; (425°C). Silicon up to 0.1% is frequently added to improve the creep resistance of the alloy. 6-2-4-2 Alloy is produced by primary melting under vacuum (VAR), electron beam (EB) melting, or plasma arc cold hearth melting (PAM). Primary melting is followed by single or double vacuum arc remelting (VAR). Product forms include forging billet, forged or rolled bar, flat rolled products, extrusions, and wire. 6-2-4-2 Alloy is used in gas turbine engines for compressor blades, impellers and discs. It also has applications in afterburner structures as well as for airframe skin applications. (Ref: https://www.atimetals.com/Products/Documents/datasheets/titanium/alloyed/ati_6-2-4-2_tds_en_v1.pdf)


6Al-2Sn-4Mo-2Sn Titanium Grade Chemistry
C N O H Si Mo V AI Fe Sn Zr
MIN 0.010 1.75 3.5 5.5 1.75 3.5
MAX 0.08 0.05 0.12 0.125 0.10 2.25 4.5 6.5 0.25 2.25 4.5




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