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What key physical, chemical and mechanical properties of carbon ceramic brakes make it better compared to other brakes for example metallic brakes made of cast iron ?

I know that they are much more light weight and can handle much higher temperatures. But what other properties make them better than other brakes ?

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  • $\begingroup$ What has your research found so far apart from mass and temperature? $\endgroup$ – Solar Mike Feb 24 at 18:17
  • $\begingroup$ "Better" depends on the use. For ordinary use I find "organic" pads to be best . I am at 85,000 miles and there is significant pad material remaining ( over 0.25" ). $\endgroup$ – blacksmith37 Feb 24 at 18:46
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    $\begingroup$ @blacksmith37 I think the carbon ceramic refers to the disk, not the pads. $\endgroup$ – Eric S Feb 24 at 20:46
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Well mass and high-temperature behavior are really the key benefits with carbon/ceramic brakes.

High temperature: Their high temperature properties make them more dependable during heavy use as they barely suffer from brake fade, they are also not prone to warping due to carbon fibers extremely low coefficient of thermal expansion (CTE). The CTE is actually negative :)

Weight: Reducing the vehicles un-sprung/un-dampened mass improves handling. Reducing the total mass is generally desired in most vehicles, the reasons are many. Reducing the wheels moment of inertia improves handling.

Wear: They will last much longer than steel discs. However considering their much higher cost, compared to steel discs, they are still more expensive in the long run.

Chemical: Another benefit but I would not call it key is that they are basically inert. They will not corrode. No more rusty discs.

Price: They are expensive compared to steel, however compared to carbon/carbon discs they are cheap and still offer many of the benefits.

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