Bull Chemicals identifies brake pads Brass Fiber as an indispensable functional component in brake pad composites, delivering four key advantages to optimize braking safety and longevity—backed by precise technical data for consistent industrial performance.
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First, it enhances thermal conductivity.
With a thermal conductivity of 120-150 W/(m·K) (25°C), Bull Chemicals’ brass fiber efficiently dissipates heat generated during braking (which can reach 600-800°C). This reduces local temperature accumulation by 15-20% compared to fiber-free pads, mitigating “heat cracking” and extending pad service life.
Second, it stabilizes the friction coefficient.
Added at 3-8 wt% (industry standard for passenger car brake pads), it acts as a friction modifier and anti-fade agent. It maintains the dynamic friction coefficient (μd) at 0.38-0.48 (per SAE J2707) even at 600°C, with a fade rate <12%—far lower than the 20% average of steel-fiber alternatives.
Third, it boosts mechanical strength.
Brake pads integrated with this brass fiber show a flexural strength of 18-22 MPa (ISO 6310) and a compressive strength of 45-50 MPa, 10-15% higher than those using organic fibers. This prevents pad fragmentation under high braking pressure (up to 1.2 MPa).
Fourth, it reduces rotor wear.
With a Vickers hardness of 80-100 HV (lower than cast iron rotors’ 180-220 HV), it minimizes rotor scoring. Tests confirm rotor wear rate is ≤0.005 mm/1000 km, 25% lower than pads with stainless steel fibers.
To ensure compatibility and performance, Bull Chemicals supplies brass fiber with controlled length (0.5-3 mm) and uniform diameter (50-100 μm), enabling easy dispersion in brake pad matrices and brake pads friction materials. It works seamlessly with resin, ceramic, and semi-metallic formulations, meeting demands for automotive, commercial vehicle, and industrial brake systems.
