Official Answer
Answer
17-7PH ne mai hazo-hardening bakin karfe da cewa samar da muhimmanci mafi girma tensile ƙarfi da kuma mafi kyau shakatawa juriya fiye da 302 ko 316. A cikin CH900 yanayin (sanyi rage sa'an nan kuma shekaru a $ 900 ^ \ cir F $), zai iya jure aiki yanayin zafi har zuwa $ 343 ^ \ cir C $ ($ 650 ^ \ \ m load $). Standard 302 bakin ya dogara ne kawai akan ƙarfin aiki, wanda zai fara farfadowa (anneal) a cikin ƙananan yanayin zafi, yana haifar da saurin asarar ƙarfin bazara (antsin damuwa). Don injectors na mai aerospace, 17-7PH shine tushe don ci gaba da matsa lamba a cikin ambulaf ɗin jirgin.
