Last-ever time Formula 1 car to utilize the "steel" brake discs to date

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
theriusDR3
theriusDR3
4
Joined: 09 Jan 2016, 09:04
Location: Pontianak, Indonesia

Last-ever time Formula 1 car to utilize the "steel" brake discs to date

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I know Formula 1 already mandated the carbon-carbon brake discs for the long time and carbon-carbon is efficient than steel.

Can you tell me please the last-ever time Formula 1 car to utilize the "steel" brake discs to date?