Official Answer
Answer
15-7 Mo (Yanayin CH900) ƙaramin ƙarfe ne na hazo-austenitic mai ƙarfi mai kama da 17-7PH amma tare da $2 \% $ Molybdenum maye gurbin $2 \% $ Chromium. Wannan gyare-gyare yana ba da ƙarfi mafi girma da mafi kyawun juriya ga lalatawar gida. A cikin zoben riƙewa na karkace, 15-7 Mo yana ba da mafi girman Modulus na Resilience ($U_r = \ frac{\sigma_y^2}{2E}$), yana ba da damar ƙara ƙarar zoben yayin shigarwa ba tare da ɗaukar saiti na dindindin ba. Wannan yana da amfani musamman ga zobba waɗanda dole ne su wuce doguwar igiya ko wani ɓangaren diamita mafi girma kafin su isa ramin su. Kayan yana yawanci tsufa akan $900^{\circ}F$ don isa ga ƙaƙƙarfan taurinsa, yana haifar da ƙarfin juzu'i na kusan $225$-$240$ ksi.
