Here's a celebration of the city's gifts to the globe.
![It's impossible to appreciate in our brief time on the planet, but stainless steel basically lasts forever. Prior to Harry Brearley's discovery in 1913 corrosion was a huge problem. 'Rustless' made the modern era and is Sheffield's greatest gift to the world. Pic: Assembling stainless steel pocket knives, George Ibberson and Co, 1950](https://www.thestar.co.uk/webimg/b25lY21zOjdjYWM4NDFmLWJkNjctNGYxMC1hNWUzLTU4N2I5ODczZDhjMzoxNzA4ZTc2YS0yZDI5LTQyNTQtODU0NS1iM2Y2YmYxZTY2Yjc=.jpg?crop=3:2&trim=&width=640)
9. Stainless steel
It's impossible to appreciate in our brief time on the planet, but stainless steel basically lasts forever. Prior to Harry Brearley's discovery in 1913 corrosion was a huge problem. 'Rustless' made the modern era and is Sheffield's greatest gift to the world. Pic: Assembling stainless steel pocket knives, George Ibberson and Co, 1950Photo: picture sheffield
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