Brake Pads Friction Material- Wollastonite is a widely used friction material reinforced fiber, which is gradually replace asbestos as a main reinforced fiber during the friction material production, such as Brake Linings, brake pads, and other brake system friction material.
GRANULARITY(SIEVE ANALYSIS,PARTICLE SIZE)
Length of Fiber (lf): 0.384mm
Diameter of Fiber (df): 20μm
Length to Diameter Ratio (lf/df): 18:1
APPEARANCE
Shape: Needle-like fiber
Color: White
PHYSICAL PROPERTIES
Specific Gravity(g/cm3) 2.8
Bulk Density(g/cm3) 0.6
Moisture Rate(%)<1.0%
Melting point (℃) 1540
Hardness(Mohs) 4.5-4.8
CHEMICAL COMPOSITION
Composition | SiO2 | CaO | Al2O3 | Fe2O3 |
Rate(%wt) | 45-52 | 42-48 | <0.3 | <0.26 |
PACKAGE:
1. 25KG/bag, double sheet paper bags with plastic bag.
2. Opened bags must be carefully resealed and kept upright to prevent leakage. Stored in original packages in a dry, cool and well ventilated areas to prevent from direct sunlight.
3. Use appropriate to avoid environment contamination.

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