I-718h Mold Material iyizinga lensimbi elithuthukisiwe lensimbi yokubumba ye-P20H (insimbi ye-3Cr2Mo mold). eye yathuthukisa kakhulu ikhwalithi, iyenza Gcwalisa ukushoda kwensimbi yokubumba i-P20H futhi ihlangabezane nezidingo zensimbi yokubumba i-P20H.