15-5pH karfe gami da aka tsara don samun mafi girma tauri fiye da 17-4 PH.Gilashin 15-5 shine martensitic a cikin tsari a cikin yanayin da aka lalata kuma an ƙara ƙarfafa shi ta hanyar maganin zafi mai ƙananan zafi wanda ke haifar da wani lokaci mai dauke da jan karfe a cikin gami.15-5 kuma ana kiranta XM-12 a wasu ƙayyadaddun bayanai
C | Cr | Ni | Si | Mn | P | S | Cu | Nb |
≤0.07 | 14.0-15.5 | 3.5-5.5 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 2.5-4.5 | 0.15-0.45 |
Yawan yawa | Electric resistivity | Ƙayyadadden ƙarfin zafi | Ƙididdigar faɗaɗawar thermal |
7.8 | 0.98 | 460 | 10.8 |
Sharadi | b/N/mm2 | б0.2/N/mm2 | 5/% | ψ | HRC | |
Hazo | 480 ℃ shekaru | 1310 | 1180 | 10 | 35 | ≥40 |
550 ℃ shekaru | 1070 | 1000 | 12 | 45 | ≥35 | |
580 ℃ shekaru | 1000 | 865 | 13 | 45 | ≥31 | |
620 ℃ shekaru | 930 | 725 | 16 | 50 | ≥28 |
AMS 5659, AMS 5862, ASTM-A564 (XM-12), BMS 7-240 (Boeing), W.Bayani: EN 1.4545
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