Official Answer
Answer
17-7PH (AISI 631) a cikin yanayin CH900 yana ba da tsayayyar gajiya mai ƙarfi da kariya ta lalata idan aka kwatanta da SAE 1070. Ana samun jihar CH900 ta hanyar raguwar sanyi sannan taurin hazo a $ 900 ^ {\circ} F $ ($ 482 ^{\circ}C $), wanda ya haifar da ingantaccen tsarin aluminum. Wannan yana haifar da ƙarfin juzu'i na 240-265 ksi. Ba kamar SAE 1070 ba, wanda ke da haɗari ga haɓakar hydrogen a lokacin plating, 17-7PH yana da juriya na lalata kuma yana riƙe da kwanciyar hankali mai ƙarfi ($ E \ kusan 29 imes 10 ^ 6 $ psi) kwanciyar hankali a yanayin zafi har zuwa $ 600 ^{\circ} F $ structure ($ 315 ^{\0) ya fara hasarar $ 1. mutunci da fama da rarrafe sama da $250^{\circ}F$.
