Introduction to Car Brake Shoes with Metallic Formula
Metallic brake shoes employ a high-performance Brake Shoes Mixture composed of sintered metal alloys and reinforced Brake Shoes Friction Materials, designed for heavy-duty vehicles and high-temperature braking scenarios. This Brake Shoes Formula ensures exceptional durability and consistent friction output under extreme conditions.
Technical Specifications
| Parameter | Value/Description |
|---|---|
| Friction Coefficient | 0.40–0.50 (μ) |
| Operating Temperature | -30°C to 800°C |
| Compressive Strength | ≥120 MPa |
| Density | 3.2–3.8 g/cm³ |
| Hardness (Rockwell) | 90–95 HRB |
| Certifications | SAE J661, ECE R90, ISO 6312 |
Key Advantages
- Superior Heat Resistance
- The Brake Shoes Mixes integrate 55–65% steel fibers and copper alloys, maintaining stable friction even at 800°C, reducing brake fade by 40% compared to non-metallic formulas.
- Extended Service Life
- Reinforced brake shoes friction materials (e.g., iron oxide, graphite) reduce wear rates to ≤0.15 mm/1,000 km under urban driving conditions.
- Enhanced Load Capacity
- Optimized brake shoes formula supports GVWR (Gross Vehicle Weight Rating) up to 16 tons, ideal for commercial trucks and buses.
- Corrosion Protection
- Zinc-coated backing plates prevent rust in humid/salty environments, doubling component lifespan.
Formula Composition & Packaging
Core Components:
- Steel fibers: 55–60%
- Copper particles: 15–20%
- Graphite lubricants: 10–12%
- Phenolic resin binders: 8–10%
Packaging Standards:
- Sealed in moisture-proof vacuum bags with desiccant packs.
- Stacking limit: ≤8 layers to prevent material deformation.
- Storage temperature: 5°C–35°C, relative humidity <65%.
Application Guidelines
- Installation: Preheat brake shoes to 80°C–100°C before fitting to enhance bonding with drums.
- Break-in Procedure: Perform 30 gradual stops from 50 km/h to 0 to stabilize the brake shoes friction materials.
This metallic brake shoes mixture is certified for use in EU/US markets, complying with REACH and RoHS environmental regulations.