Pergunta de entrevista da empresa Apple

which is stronger Ti or Steel?

Resposta da entrevista

Sigiloso

6 de out. de 2014

Assuming we are comparing with SST 302 and Ti/Al alloy Grade 5, The YS for SST is around 520 MPA, and the UTS is 860 MPA. The YS for Ti/Al is around 1100MPA, and the UTS is around 1160MPA. For Ti, the YS is in the range of 110-220 MPA, and the UTS is in the range of 240MPA to 370MPA. So Ti/Al alloy, is the strongest, SST next, and pure Ti is the last.