Freight Wagons Brake Blocks
Comstar grade F04/LNAF is a non-asbestos composite railway brake block, rigid hot-moulded in dark grey. Its matrix of synthetic, mineral and organic fibres with thermally stable “Novalac” phenolic resin binder ensures required strength, friction and wear performance. This product meets UIC dynamometer specifications.
Application
- This products is suitable for Freight stock & Container flat wagons (BOXN, BOY, BLCA &BLCB) for speed up to 120 KMPH.
Technical data
- Average mean coefficient of friction (Dry & Wet) – : 0.16μ
Typical chemical properties
- Acetone Extract Max. : 3.0 %
- Loss on Ignition Max. : 40 %
Typical physical properties
- Density (Gm/cc) : 1.75 – 1.90
- Hardness (HRX) :90 – 105
- Cross Breaking Strength (Kg/cm2) Min. : 180
- Shear strength (KN) Min. : 5.0
- Compression Modulus (N/mm2) : 1500-3000
- Classification as per UIC Specification : L -Type Low friction
- Average Coefficient of friction : 0.13 -0.21μ
Recommended
operating range
- Maximum temperature : 400° C
- Maximum Operating temperature : 300° C
- Maximum Brake Force : 4.5 Tons