17-4PH ni chromium-nikel-umuringa wimvura ikomera martensitike idafite ibyuma. Uru rwego rwibyuma bitagira umwanda birangwa nimbaraga nyinshi, gukomera no kurwanya ruswa. Imiterere yubukanishi itezwa imbere nubushyuhe bwo kuvura kandi imbaraga zo kwikuramo zigera kuri 1100-1300 MPa (160-190 ksi) zirashobora kugerwaho. Uru rwego ntirushobora gukoreshwa ku bushyuhe buri hejuru ya 300 ° C (572 ° F) cyangwa ku bushyuhe buke cyane. Ifite ruswa irwanya ikirere hamwe na acide acide cyangwa umunyu, kandi kurwanya kwangirika kwayo kugereranywa na 304.

17-7PH ni imvura igwa ya austenitike-martensitike ikomera ibyuma bitagira umwanda byakozwe hashingiwe kuri 18-8CrNi, bizwi kandi ko bigenzurwa nicyiciro cyagenzuwe nicyuma. 17-7PH ibyuma bidafite ingese ni ishyirahamwe rya austenitike ridahinduka nyuma yumuti uhamye Kuvura, hamwe no gukomera kwa plastike no gukoreshwa neza, nyuma yubushyuhe, kugirango imvura igwa ya austenite ya karbide nyuma yo guhinduka kwimiterere, hanyuma binyuze muburyo bwo guhindura martensitike, igice kinini cyumuryango gihinduka muburyo buke bwa karubone hamwe nubukomere bwiza. Nyuma yubushyuhe, imiterere ya austenite yimvura ya karbide irahinduka, hanyuma binyuze muburyo bwo guhindura martensitike, igice kinini cyumuryango gihinduka karubone nkeya ya tembure ya martensite ifite ubukana bwiza, kandi ifite imiterere yubukanishi mubushyuhe bwo hagati. 17-7PH irwanya ruswa iruta icyuma rusange cya martensitike.