Specification Value Test Method Penetration @25°C 35 IS 203 Absolute Viscosity @60°C, Poises 3200-4800 IS 1206 Kinematic Viscosity @60°C, Poises 400 IS 1206 Softening Point °C 50 IS 1205 Flash Point °C 220 IS 1448 Solubility in CS2 %wt. 99.0 IS 1216 Test on residue from rolling thin film oven test Viscosity Ratio @60°C 4 IS 1206 Ductility @25°C 25 IS 1208 VG-40 is used in highly stressed areas such as intersections, near toll booths and truck parking lots in lieu of old 30/40 Penetration grade. Due to its higher viscosity, stiffer Bitumen mixes can be produced to improve resistance to shoving and other problems associated with higher temperature and heavy traffic loads.