Abstract This is the first report presenting development of a Co–Cr–W–Ni–Mn alloy by adding 6 mass pct Mn to ASTM F90 Co–20Cr–15W–10Ni (CCWN, pct) for use as balloon-expandable stents with an excellent balance mechanical properties and corrosion resistance. The effects addition on microstructures well were investigated after hot forging, solution treatment, swaging, static recrystallization. Mn...