The following alloys are the most used in a wide range of applications and are most commonly available from manufacturers and stockists. Click on the alloy for more details. Grade numbers refer to the ASTM specifications.
Alloys additional to those above which are of growing importance are also available, but stocks may be limited and there may be fewer product forms. Full details on these alloys is given in the TIG CD available on application.
| Ti-5Al-1Sn-1Zr-1V-0.8Mo (Grade 32) |
'Navy' alloy for high strength marine and offshore use |
| Ti/Pd Grades 26 and 27 Ti + .10% Ru * |
Replacing Grades 7,11,16,17 at lower cost |
| Ti-6Al-2Zr-2Sn-2Mo-2Cr-0.25Si (6.22.22) |
Airframe alloy reintroduced for F22 and JSF projects |
| Ti-4.5Al-3V-2Mo-2Fe (SP 700) |
Competitor for Ti-6-4 for SPF and general use |
A number of other alloys are also produced often for specific applications. Availability is typically not as good as for the commonly used alloys and manufacturing sources, stocks and product forms may also be limited.
| Alloys |
Attribute/applications |
| CP Ti Grade 3 |
Corrosion resistant higher strength than Grade 2 |
| Ti-0.8Ni-0.3Mo (Grade 12) |
Higher strength than cp but with enhanced corrosion resistance |
| Ti-3Al-2.5V Grade 9 (and with Pd Gr.18) |
'Half 6-4' more easily fabricated, medium strength alloy |
| Ti-5Al-2.5Sn ELI (and Grade 6) |
Good combination of properties for cryogenic application |
| Ti-2Cu (TIMETAL®230) |
Heat treatable aero sheet alloy |
| Ti-4Al-4Mo-4Sn-0.5Si (TIMETAL®551) |
High strength airframe alloy, very limited availability |
| Ti-8Al-1Mo-1V (8-1-1) |
Early aero alloy now mainly used for spares and replacements |
| Ti-6Al-6V-2SnTi-662 |
High strength alloy with specific (earlier) aero applications |
| Ti-11Sn-5Zr-2.5Al-1Mo-0.2Si (TIMETAL®679) |
Earlier aero engine alloy rarely specified in new programmes |
| Ti-6Al-5Zr-0.5Mo-0.25Si (TIMETAL® 685) |
Aero engine alloy now mainly used for spares and replacements |
| Ti-6Al-2.7Sn-4Zr-0.4Mo-0.45Si (TIMETAL® 1100) |
High temperature alloy with some auto engine applications |
| Ti - 6Al - 1.7Fe - .1Si (TIMETAL® 62S) |
Low cost 'replacement for 6/4 in automotive and other non aero applications |
In addition to the above a number of Russian Alloys are now being marketed and sold in the West. Details and specifications are available from the suppliers. Specifications include:
|
VT1-0 Commercially Pure
|
Similar to ASTM Grade 2
|
|
VT6
|
Similar to ASTM Grade 5
|
|
VT16 (Ti-5Mo-4.5V-3Al)
|
High strength fastener alloy
|
|
OT4-1 (Ti-2Al-1.5Mn)
|
Medium strength and fabricability
|
|
VT5-1 (Ti-5Al-2.5 Sn)
|
Similar to ASTM grade 6
|
|
VT3-1 (Ti-6Al-2.5Mo-1.5Cr-.5Fe-.3Si)
|
Heat and creep resistant engine alloy
|
|
VT18 (Ti-6.5Al-4Zr-.7Mo-2.5Sn-1Nb-.15Si)
|
Heat and creep resistant engine alloy
|