How many strikes should I expect from a ferrocerium rod?

Manufacturer claims of 10,000–20,000 strikes are common, but reviewers in r/Bushcraft note real-world lifespan depends heavily on how aggressively you scrape. A 1/2-inch by 5–6 inch rod realistically lasts most casual users many years, while soft-ferrocerium rods spark more easily but wear faster than hard rods.