Bull Chemicals identifies brake pads Steel Wool as the backbone of structural integrity and load-bearing capacity in advanced brake pad composites. Its primary role is to reinforce the brake pads friction materials, ensuring it withstands extreme mechanical stresses and thermal shocks during braking cycles.
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Firstly, it provides exceptional mechanical reinforcement.
Our chopped steel fibers, with a diameter of 0.15-0.3mm and length of 3-6mm, are uniformly dispersed to enhance the pad’s flexural strength to ≥15 MPa and compressive strength to ≥80 MPa. This prevents cracking, chipping, and structural failure even under heavy or repeated braking loads.
Secondly, it optimizes thermal conductivity and heat resistance.
Steel fiber acts as an efficient thermal bridge within the pad, with a thermal conductivity of approximately 50 W/(m·K). This facilitates the rapid dissipation of frictional heat (often exceeding 600°C), reducing the risk of material degradation and maintaining consistent performance.
Thirdly, it contributes to stable friction and wear performance.
The steel fibers, typically added at a weight percentage of 8-15%, create a rigid framework that supports the friction particles. This results in a controlled and stable friction coefficient (μ) of 0.38-0.48 and a low pad wear rate of ≤0.7 cm³/(MJ), ensuring long service life and reliable braking.
In essence, Bull Chemicals’ steel fiber is a critical component that balances structural robustness, thermal management, and friction stability, making it indispensable for high-performance automotive and industrial brake pad applications.
