Titanium alloys have good cryogenic properties, with the a alloy Ti-5Al-2.5Sn and the a-P alloy Ti-6Al-4V seeing extensive use.

A number of P alloys have been developed over the years with current activity being concentrated on the alloys shown in Table 8.6. Generally these alloys exhibit higher strength-toughness combinations than the a-P alloys such as Ti-6Al-4V [25, 27].

The Timetal 62S (Ti-6Al-2Fe-0. 1Si) is a low-cost alloy (formulated with a lower cost Al-Fe master alloy than Ti-6Al-4V, which uses an Al-V master alloy) which has received consideration for armor applications.

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