15-5 PH chitsulo chosapanga dzimbiri ndi chitsulo chosapanga dzimbiri cha martensitic choumitsa pafupifupi 15% Chromium ndi 5% Nickel. Lili ndi mphamvu zambiri, kuuma kwakukulu, komanso kukana kwambiri kwa dzimbiri. Mphamvu imatha kuonjezedwanso ndi chithandizo chimodzi chochepa cha kutentha kwa kutentha. Poyerekeza ndi 17-4 PH, imapereka kulimba kopingasa bwino komanso ductility; bwino makina katundu mu zikuluzikulu mtanda zigawo, ndi forgeability bwino. Ndi zowotcherera mosavuta. Itha kupangidwa mumitundu ingapo ya Thermal Conditions yomwe ilipo giredi iyi.