Titanium is selected when lightweight strength and corrosion resistance must coexist in a more demanding operating environment. It is common in aerospace, medical devices, racing, and advanced industrial hardware where part value is high enough to justify a slower and more controlled machining route.
From a sourcing perspective, titanium usually requires more planning than aluminum or stainless steel. Tool wear, heat management, and practical geometry choices all have a larger effect on the final cost and lead time.