chapter  4
4 Pages

Alpha Alloys

Commercially pure (CP) titanium and Ti-5Al-2.5Sn are the most important alloys of this type. CP titanium (ASTM grades 1-4) is usually hot rolled, forged, and heattreated in the single

α

-phase field. Typical processing temperature for CP titanium is 800˚C. Typical heat treatment is 675˚C/1h/AC. Alpha alloys are mainly used in the chemical and process-engineering industries, where corrosion resistance and deformability are the main concern. Microstructure and fractographs of CP titanium (ASTM grade 2) are presented in this section.