What Materials Are Used in Brake Pads?

[RebeccaLee]

Here is a detailed introduction to the materials used in brake pads: 1. Semi-metallic materials. These brake pads are still the mainstream products in the market, offering affordable prices and excellent braking performance. However, their shortcomings are also quite evident, including a tendency to generate noise, significant wear on brake discs, and the tendency for brake dust to adhere to the wheel hubs, affecting the wheel's appearance. 2. Ceramic materials. Composed of mineral fibers, glass fibers, and copper elements, ceramic brake pads feature high-temperature resistance, slow thermal decay, no noise, superior braking performance, low wear rates on brake discs, minimal brake dust, and easy cleanup. The downside is their relatively higher price and lower wear resistance compared to metallic brake pads.

[DeBella]

I've been driving for over twenty years, so I know brake pads inside out. The earliest ones were made of asbestos—cheap but quick to wear and environmentally harmful. Nowadays, semi-metallic ones are mainstream, mixed with copper, iron, and steel wires—durable but harsh on brake discs. Ceramic formulas are favored by luxury cars, blending ceramic fibers with copper powder, offering quiet operation and less dust that won’t gunk up your rims. Organic materials are cheap and common, mixing resin with rubber and wood fibers, but they tend to get soft in rainy weather. Recently, carbon-ceramic pads have become trendy, standard in race cars—lightweight and heat-resistant, though the price is painfully steep. A veteran driver’s advice: stick with reputable brands—cheap materials can literally smoke under hard braking.

[Jessie]

Last time I went to the repair shop to replace brake pads, the mechanic showed me the material differences. Nowadays composite materials dominate the market. The basic version is called Non-Asbestos Organic (NAO), made with glass fiber and rubber bonding, suitable for daily commuter cars. The upgraded semi-metallic pads mix copper and steel, perfect for mountain driving without overheating concerns, but they produce more dust that easily blackens the rims. The high-end option is ceramic composite pads, combining ceramic particles with copper fibers - I've tested them with 70km/h emergency stops without squealing, and the pedal feel was like stepping on cotton. The carbon fiber pads used in special racing events are even more impressive, withstanding 800°C temperatures, though they're incompatible with regular cars. When choosing brake pads, always check your vehicle manual's requirements, as mixing materials can reduce braking efficiency.

[KaiDella]

A friend in material R&D told me that brake pads are like sandwiches. The base backing plate uses galvanized steel for rust prevention; the middle adhesive layer bonds materials with phenolic resin; the core friction layer is the most complex. Semi-metallic formulas contain 65% steel wool, offering quick heat dissipation but increased rotor wear. Ceramic pads use mineral fibers and cashew nut shell oil—lab tests showed three times slower wear rates. Top-tier formulas incorporate Kevlar fibers, capable of creating visible sparks during F1 emergency braking. Recently, he recommended graphite-infused pads that reduce wet braking distance by 1.8 meters. Note that eco-friendly versions now eliminate heavy metals like antimony and cadmium.

[Santiago]

During auto repair training, the instructor disassembled brake pads: an iron block serves as the base, with the core being a 2cm-thick friction layer. Mineral fibers act as the skeleton, while resin bonds copper powder and graphite like glue. Copper dissipates heat quickly to prevent overheating, and graphite lubricates to avoid noise. Squealing brakes in the rain? That's due to insufficient zinc particles. Some low-quality pads mix in clay as filler, smoking after just ten hard brakes. A tuning shop owner taught me to feel the edges—ceramic pads have a gritty texture. Don’t blindly trust drilled or slotted pads; poor materials make them just for show. Check groove depth yourself—replace if it’s below 3mm.

[Felix]

I only realized how crucial brake pad materials are after a motorcycle crash. Standard iron-based pads go soft after just 10 hard stops, but sintered copper pads triple the heat resistance. Now for off-roading, I use carbon-metallic pads - iron powder sintered into porous structures that maintain stopping power even in mud. My buddy's Harley runs carbon-ceramic pads that won't fade on long descents, though they need preheating in cold weather. Remember: if brakes feel spongy, don't just top up fluid - 80% chance it's pad degradation. Last material temp test showed standard pads hit 300°C in three stops while ceramics stayed at 170°C. Rider wisdom says: The price difference between pad grades could've bought your insurance.