Titanium Heat Treatment: Annealing Temperatures, STA, and Stress Relief by Grade
Titanium heat treatment varies significantly by alloy grade. Commercially pure (CP) grades 1–4 can only be annealed (538–760°C / 1000–1400°F) and stress-relieved—they cannot be strengthened by heat treatment. Grade 5 (Ti-6Al-4V), the most widely used alloy, can be annealed at 691–760°C (1275–1400°F) or solution treated at 913–954°C (1675–1750°F) and aged

