I-A269 imboza kokubili okushiselwe kanye nengenamthungo ibala ezinhlelweni zokusebenza ezijwayelekile noma ezidinga ukumelana nokugqwala kanye nokusetshenziswa kwethempele eliphansi noma eliphezulu okuhlanganisa u-304L, 316L kanye no-321. I-A249 ishiselwe kuphela futhi isetshenziselwa izicelo zethempele eliphezulu (ibhoyili, isishintshi sokushisa).