TT135 is a high-pressure molded sintered bronze friction material. The high proportion of bronze, as well as the carefully chosen types of graphite and silicate result in an extremely high wear resistance, even under high energy conditions. TT135 offers a mid-high friction coefficient with smooth engagement while preserving the mating surfaces. TT135 is designed for extra heavy-duty brake and clutch applications requiring stable, high-temperature performance. The material exhibits a stable friction coefficient level across all temperatures, while maintaining fade resistance. TT135 is suitable for applications where organic materials reach their thermal limits. The material is free of lead. Available in custom geometries including discs, pads, and segments.

Friction Properties

  • Static Friction Coefficient : 0.478 ±0.05μ
  • Dynamic Friction Coefficient: 0.462 ±0.05μ
  • Fade Resistance: µ > 0.40 to 345°C / 653°F
  • Recovery: Full (returns to baseline µ after fade)

Physical Properties

  • Wear Rate: 4.2 x 10-8cm3/J
  • Mass Loss: 0.5%
  • Thickness Loss: 5.0% (100 applications at ~ 202°C / 396°F)
  • Tensile Strength: 31kg/cm2 l
  • Shear Strength: 6100 lbs.
  • Brinell Hardness: HB150-250
  • Specific Gravity: 5.5-6.5 gr/cm3
  • Fireproof

Thermal Properties

  • Maximum Continuous Operating Temp: 400 C°/ 750 F°
  • Maximum Intermittent Operating Temp: 550 C°/1020 /F°
  • Fading: >345°C / 653°F (no significant fade observed)

Material: High-Pressure Molded Sintered Bronze Matrix

Appearance /Formats:

Gear Tooth Facings. Disc Brake Pads. Segments
Clutch Facings & Buttons
Oil grooves can be pressed or machined

Applications

Heavily Loaded Segments
Differential Clutches
Industrial Brakes (Cycle-Duty). Stamping Presses
Marine Gearboxes. Hoists and Winches
Motorsport, Racing Clutch Buttons
Heavy Vehicle, Construction Machinery

Compliance: Reach (EC) 1907/2023 & RoHS2015/863/EU

Additional

Recommended Mating Surfaces: Cast Iron with Surface Finish < 0.5µm Ra (20µin CLA): Steel Hardened & Tempered, Cast Steel, Cast Gray Iron