Is iso and aw hydraulic 46 the same?

ISO 46 and AW 46 refer to hydraulic fluids with a viscosity grade of 46 centistokes at 40°C, but they are not exactly the same. ISO 46 is a designation under the International Organization for Standardization (ISO) that specifies the viscosity grade, while AW (Anti-Wear) 46 indicates that the fluid contains anti-wear additives, making it suitable for hydraulic systems. While both may have similar viscosities, the AW designation specifies additional performance characteristics related to wear protection.