Overview
SL2318 is a specialized lubricant additive designed to enhance the performance of industrial oils under extreme pressure (EP) conditions. It is widely used in sectors requiring high load-bearing capacity and wear resistance, such as mining, automotive, and heavy machinery. Chemically, SL2318 belongs to the family of sulfur-phosphorus compounds, which form protective films on metal surfaces to reduce friction and prevent scoring. Its formulation is tailored for compatibility with both mineral and synthetic base oils.
Physical and Chemical Properties
SL2318 exhibits high thermal stability, maintaining efficacy even at elevated temperatures (up to 200°C). Its viscosity ranges from 150 to 300 cSt at 40°C, depending on the carrier oil. The additive's sulfur-phosphorus content (typically 10-20%) enables it to react with metal surfaces under pressure, forming sacrificial layers that minimize direct metal-to-metal contact. This property is critical for applications involving shock loads or slow-speed, high-torque operations.
Main Applications
Primary uses include industrial gearboxes, wind turbine lubricants, and metal-forming processes like stamping and forging. It is also added to hydraulic fluids for construction equipment. In the automotive sector, SL2318 is blended into axle oils and manual transmission fluids to extend component life. Its anti-scuffing properties make it ideal for hypoid gears, which experience sliding motion under heavy loads.
Safety and Storage
SL2318 requires careful handling due to its chemical reactivity. Storage tanks should be made of carbon steel or stainless steel to avoid contamination. Bulk containers must be nitrogen-purged to prevent oxidation. Spills should be contained with inert absorbents (e.g., vermiculite) and disposed of as hazardous waste. Workers must wear chemical-resistant gloves (nitrile or neoprene) and safety goggles when handling concentrated formulations.
B2B Procurement Guide
When sourcing SL2318, prioritize suppliers with ISO 9001 certification and batch-specific test reports. Key parameters to verify include active element content (S/P ratio), kinematic viscosity, and copper corrosion ratings (ASTM D130). For large orders (1+ metric tons), negotiate pricing based on annual volume commitments. Consider regional logistics—some formulations may require heated transport to prevent solidification in cold climates.
Related Manufacturers
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