Metal brake pads vs ceramic brake pads, are there different levels? Are ceramic brake pads "porcelain"

Compared with metal brake pads, ceramic brake pads are much quieter because they do not wear much. This reduces the pressure on the brake discs, which also means a longer service life. Are the brake pads still high or low? Why did the driver replace the metal brake pads and ceramic brake pads?
Most importantly, ceramic brake pads provide higher heat resistance, which also extends brake life. Metal brake pads are not actually 100% metal, but they are mostly made of metal materials. Metal brake pads vary, with only 30% metal or up to 70% metal.
Due to the metal material, the metal brake pads will produce large noise during operation. Moreover, although their wear resistance reduces the speed of the vehicle better, it also makes the brake wear faster. The black powder produced by metal brake pads will be trapped around the wheel hub. Ceramic brake pads are much more expensive than metal brake pads.
Since they do not cause too much friction on rotating brake discs, it takes longer to decelerate or stop the vehicle with ceramic brake pads. If you are driving an SUV or an off-road vehicle, you should not use ceramic brake pads. The main structure of ceramic brake pads is no different from our ordinary brake pads.
The main reason is that the friction materials of our ceramic brake pads are different. The biggest difference between ceramic brake pads and traditional brake pads is that there is no metal. Metals in traditional brake pads are the main friction materials. The braking force is large, but the wear is large, and it is easy to generate noise. Some of the friends who replace ceramic brake pads are young riders who have high requirements for the brake system and pursue performance.
They like to see the benefits of ceramic brake pads and want to replace them. Another case is that you are troubled by the abnormal noise made by ordinary brake pads. If the ceramic brake pads need to be replaced to obtain a quieter braking sound, some novice drivers often hear about replacing the ceramic brake pads.
Then some novice drivers asked questions such as "ceramic brake pads do not slip", which could not be explained literally. Brake pads are not ordinary ceramics, but composite brake pads made of ceramic fiber, aramid fiber, mineral fiber and other materials! The so-called ceramics here are not ceramics in porcelain, but metal ceramics.
Cermet itself is also a composite material. The appearance of ceramic brake pads is as follows. Ordinary metallurgical powder brake pads will melt in the ultra-high temperature environment, and the brake pad surface may appear "waves". Friction with the brake disc will not produce reaction force, and the brake will fail; In other words, ceramic brake pads have the advantage of high thermal runaway limit.
The brakes will not fail so easily on long downgrades. It is suitable for vehicles or novices driving on high-frequency winding roads. Ceramic fiber brake pads are not easy to produce sharp abnormal noise under high temperature braking, but metallurgical powder brake pads are easy to produce abnormal noise; The friction between metal and metal materials is easy to produce sharp whistles, which are very harsh.
If you want to feel it, you can pay more attention to trucks. The brake shoes and brake drums of trucks are prone to squeal during friction and deceleration. This is why most drivers prefer ceramic brake pads. Even if their cost is a little more expensive than metallurgical powder brake pads, they are worth upgrading.
Ordinary brake discs are mostly made of "HT250 grey cast iron", which belongs to "big iron disc". Grey cast iron plate is used for general high-grade luxury cars. Only a few sports cars use soi ceramic brake discs. It can be seen that two materials were used. Huge cost difference; Grey cast iron discs can be used with ceramic brake discs.
High standard disc brake and braking system can make the braking distance of medium and large vehicles as low as 35m. For ordinary people, the power of decelerating G is exaggerated. As the name implies, the ventilated brake disc can be ventilated from the outside and inside, and the air flow can be guided through the brake disc holes to achieve two-way rapid cooling of the brake disc.
The disc brake is exposed to air, and the air flow through the brake disc can absorb its braking. However, if the driving style is more intense and the braking is more frequent, the ordinary brake disc may still fail under high temperatures, and the limit of two-way heat dissipation of the ventilation disc can be improved.
In the case of continuous braking, under the premise of continuous extrusion and efficient friction between the brake pads and brake discs, the high temperature of the automobile system will soon be caused. Therefore, ceramic brake pads can withstand greater pressure and shear force during braking. Ceramic materials dissipate heat quickly.
If the brake system is not used with high intensity, it will rapidly reduce the temperature of the brake system through heat dissipation.