400×34

Name (EN): 380×26/34 High Carbon Steel / Carbon Ceramic Brake Disc High-carbon cast iron brake disc series (GG20HC). Chemical composition (main elements): C (carbon): 3.5-3.8 %; Si (silicon): 1.8-2.2 %; Mn (manganese): 0.5-0.8 %; P (phosphorus): ≤0.1 %; S (sulfur): 0.3-0.5 %; Cr (chromium): 0.15-0.35 %; others (Ni/Cu): 0.1-0.2 % Weight: 7770 г/pc-9290 г/pc Surface hardness: 170–200 HB Execution standard: GG20HC Tensile strength: ≥250 МПа Mounting hole diameter: Ø8.0 мм Friction surface width: 54 мм Petal step: 1.5 мм Centering ring diameter: Ø272 мм Brake disc air ducts: 84 ventilated arc ducts Carbon-ceramic (CCB) version of the disc: Chemical composition: C (carbon): 4 %; Si (silicon): 6 %; Mn (manganese): 3.9 %; P (phosphorus): 2.0-2.4 %; S (sulfur): 0.8-1.0 %; Cr (chromium): ≤0.3 %; others (Ni/Cu): 0.25-0.55 % Weight: 3885 г/pc-4645 г/pc Density: 2.1±0.1 г/см³ Mechanical properties: 70 МПа Friction coefficient: ≈0.4-0.6 Service life: >40 000 км Maximum operating temperature: >1300 °C Carbon fiber grade: T400 Surface treatment technology: CCB Surface coating: silicon carbide (SiC) Execution standard: T/CAAMTB 57-2021 Surface hardness: 800 HB Tensile strength: ≥136 МПа Mounting hole diameter: Ø9.05 мм