Which one should I choose between semi-metallic and ceramic formula for brake pads?

Recently, many video bloggers on the Internet are using magnets to determine the formula of brake pads. Is this method correct? Semi-metallic brake pads are mainly composed of metal materials and are usually attracted to magnets; while ceramic brake pads are usually not attracted to magnets because their main component is ceramic fiber. So, can a magnet be used to determine the formula of the brake pad, and thus determine the quality of the brake pad?

Next, let’s talk about the different characteristics of the two formulas in detail:

1. Characteristics of semi-metallic brake pads

Semi-metallic formula brake pads are made from a blend of metal fibers, graphite and organic materials. This type of brake pad is relatively common on the market and relatively cheap, making it an affordable option for many car owners when considering replacing their brake pads.

It has good thermal conductivity, high power absorption per unit area, and high thermal conductivity. During the braking process, the heat generated by friction can be quickly conducted away, which can be applied to the braking situation of high-speed and heavy-load driving of automobiles, and is widely used in ordinary cars. At the same time, semi-metallic brake pads also have excellent wear resistance, have the advantages of high friction coefficient and easy processing and molding, which provide a certain guarantee for the vehicle's braking performance.

2. Characteristics of ceramic formula brake pads

The main components of ceramic formula brake pads are ceramic fiber and resin. Its performance is extremely stable in high temperature environments. When the temperature reaches 500 - 600 degrees, it can still maintain good braking performance and will not affect friction due to temperature rise like ordinary brake pads. At the same time, ceramic brake pads generate very little dust and can effectively keep the wheel hub clean. During the braking process, the noise is low, and there is no squeaking sound when braking, whether in wading or salt water conditions, providing drivers with a quiet and comfortable driving environment.

Its service life is long, generally more than 100,000 kilometers, which is more than 50% longer than the average service life of semi-metallic brake pads. Ceramic materials are wear-resistant, high-temperature resistant, and have good thermal stability. They can maintain stable performance even under frequent braking. The fast heat dissipation feature allows the heat generated by friction to be dissipated quickly, and the friction coefficient is higher, further improving the braking effect. In addition, ceramic brake pads have good mechanical strength and physical properties and can withstand large pressure and shear forces, providing a strong guarantee for driving safety.

3. Thoughts on comparison of two formulas

There are obvious differences between semi-metallic brake pads and ceramic brake pads in many aspects.

Price-wise, semi-metallic formula brake pads are cheap, which is an important consideration for car owners on a budget. The higher price of ceramic formula brake pads may deter some car owners.

In terms of braking performance, ceramic formula brake pads can still maintain a stable friction coefficient in high temperature environments, have shorter braking distances, and have strong resistance to thermal attenuation. In contrast, semi-metallic brake pads do not perform well in terms of heat resistance. As the temperature increases, the friction coefficient tends to decrease, affecting the braking effect.

In terms of noise control, ceramic formula brake pads have obvious advantages. They have low noise during braking, providing drivers with a quiet driving environment. Semi-metallic brake pads are prone to caliper noise, which affects the driving experience.

In terms of service life, ceramic formula brake pads can usually reach more than 100,000 kilometers, which is much higher than semi-metallic formula brake pads. Semi-metallic formula brake pads have a relatively short service life and need to be replaced more frequently.

In terms of environmental protection, ceramic formula brake pads produce very little dust, can effectively keep the wheel hub clean, and are more environmentally friendly. Semi-metallic brake pads are prone to debris and have a certain impact on the environment.

For car owners, they need to consider their needs and budget when choosing brake pads. If you focus on cost performance and don’t have high requirements on braking performance, semi-metallic brake pads are a feasible choice. But if you pursue excellent braking performance, a quiet driving environment and a long service life, and your budget allows, ceramic brake pads are a better choice. At the same time, no matter which brake pad you choose, you should check and maintain it regularly to ensure the safety and reliability of the braking system.

Therefore, no matter which formula of brake pads you choose, the one that is suitable will be the best.