I-15-5pH yensimbi yensimbi yenzelwe ukuba ibe nokuqina okukhulu kune-17-4 PH.I-alloy ye-15-5 i-martensitic kwisakhiwo kwimeko ye-annealed kwaye yomelezwa ngakumbi ngonyango lobushushu obuphantsi obuphantsi obangela ubhedu oluqulethe isigaba kwi-alloy.I-15-5 ikwabizwa ngokuba yi-XM-12 kwezinye iinkcukacha
| 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 |
| Ukuxinana | Ukumelana nombane | Ubushushu obuthile bomthamo | I-coefficient yokwandisa i-Thermal |
| 7.8 | 0.98 | 460 | 10.8 |
| Imeko | бb/N/mm2 | б0.2/N/mm2 | δ5/% | ψ | HRC | |
| Imvula | 480℃ukuguga | 1310 | 1180 | 10 | 35 | ≥40 |
| 550℃ukuguga | 1070 | 1000 | 12 | 45 | ≥35 | |
| 580℃ukuguga | 1000 | 865 | 13 | 45 | ≥31 | |
| 620℃ukuguga | 930 | 725 | 16 | 50 | ≥28 | |
AMS 5659, AMS 5862,ASTM-A564 (XM-12),BMS 7-240 (Boeing),W.Nr./EN 1.4545
•Imvula Ukuqina
•Amandla aphezulu
•Ukumelana nomhlwa okuphakathi ukuya kuma-600°F
•Usetyenziso lwe-aerospace
•Ukusetyenziswa kweekhemikhali kunye nepetrochemical
•Intlama kunye nephepha
•Ukulungiswa kokutya