- Grade / Alloy
- Ti Grade 6
- EN / W.Nr.
- —
- AISI / SAE
- —
- UNS
- R54520
- Family
- Titanium alloy
What kind of titanium is Grade 6?
Grade 6 is a titanium alloy containing approximately 5% aluminium and 2.5% tin. It belongs to the alpha titanium family and serves parts where mechanical characteristics matter at elevated temperature. Unlike many corrosion-focused applications of commercially pure titanium, its role is associated with aerospace components benefiting from light weight and load capacity together.
Combining low weight with hot strength
Low weight matters in aircraft components because it reduces the total mass carried. A hot component also needs useful mechanical properties alongside that lightness. Grade 6 combines titanium’s low density with strength relevant to elevated-temperature applications. It therefore serves hot structural parts as well as simply providing a lightweight metal.
Difference from Grade 5
Grade 5 is the aluminium-vanadium alloy Ti-6Al-4V, while Grade 6 is a different, tin-bearing alpha alloy. Their composition affects thermal behaviour and mechanical characteristics. Grade 5 has a very broad aerospace and general mechanical role; Grade 6 serves applications drawing on the temperature-related characteristics of alpha titanium.
Designation and forms
Grade 6 and Ti-5Al-2.5Sn identify the same alloy, with UNS designation R54520. Sheet and plate can serve large-surface components, while bar and forgings suit thicker mechanical parts. Across the forms, low weight combined with mechanical performance at temperature is the common theme. Additional designations such as ELI identify separate composition limits.
Typical application areas
Aerospace engine components, elevated-temperature structural parts.
Product and cutting options
Relevant product forms for this material are listed below. Availability varies with grade and dimensions.