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Solution Treatment & Aging of Titanium Alloys

Guide to STA of alpha-beta and beta titanium alloys.

thermal

Quick Answer

What is STA? Solution treatment at 900-980°C + quench + aging at 480-595°C maximizes strength.

Properties After STA

Alloy UTS (ksi) YS (ksi) Elong (%) Hardness
Ti-6Al-4V 150-170 140-160 8-12 36-40 HRC
Ti-6Al-4V ELI 140-160 130-150 10-15 34-38 HRC
Ti-10V-2Fe-3Al 180-200 170-190 6-10 40-44 HRC

References

  • AMS 2759, ASTM B348

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