Castrol Alusol: High-performance Cutting Fluids for Precision Aluminium Machining
Overview:
Castrol Alusol lubricants are high-performance, water-soluble metalworking coolants specially developed for the machining of aluminium alloys and non-ferrous metals, while also offering reliable performance on cast iron and low-to-medium-alloyed steels. Castrol Alusol products deliver excellent lubrication, cooling, and surface finish across a wide range of machining operations. The primary purpose of Castrol Alusol lubricants is to support high-precision and high-performance machining in both central and single-sump systems.
Key Benefits at a Glance
Why consider Castrol Alusol Series
- Exceptional pH stability for longer fluid life and consistent machining
- Excellent lubricity for a cleaner cutting edge and superior surface finish
- Low foam performance is ideal for soft and hard water conditions
- Supports multi-metal machining, especially aluminium and low–medium alloyed steels
- Reduced additive top-ups, lowering maintenance time and system costs
- Cleaner machines and reduced drag-out for better housekeeping and efficiency
Product Details
Discover the Capabilities of Castrol’s Alusol Series Products
| Product | Mineral Oil % | pH (5%) | Appearance | Emulsion (%) | Material Suitability | Key Applications |
| Alusol ABF 10 | 40 | 9.2 | Milky | 4–10 | Aluminium alloys, Non-ferrous, Steel | Water-soluble, coolant free of boron and amines for machining aluminium alloys, low- to medium-alloyed steel |
| Alusol 5505 | 47 | 9.3 | Translucent | 5–10 | CI, Steel, Aluminium | High-performance soluble coolant for central systems; suitable for machining aluminium. |
| Alusol SL 41 XBB | 53 | 9.5 | Milky | 5–10 | Aluminium alloys, Non-ferrous | Designed for machining aluminium alloys; also suitable for non-ferrous alloys. |
| Alusol SL 61 XBB | 35 | 9.3 | Milky | 6–10 | Aluminium alloys, CI, Steel | Water-soluble coolant for high-performance machining of aluminium alloys; also suitable for cast iron and low-alloyed steel. |
Application Compatibility
Engineered for High-Precision Aluminium Machining
Castrol Alusol lubricants is specially formulated for aluminium alloys, light alloyed steels, and general multi-metal machining across a variety of operations.
Application Matrix
| Application | Aluminium Alloys | Light Alloyed Steel | Low–Medium Alloyed Steel | Cast Iron |
| Milling / Turning | ✓ | ✓ | ✓ | ✓* |
| Drilling | ✓ | ✓ | ✓ | ✓* |
| Reaming, Tapping, Screwing | ✓ | ✓ | ✓ | ✓* |
| Grinding | ✓ | ✓ | ✓ | ✓* |
Compatibility may vary by grade, consult your Castrol representative.
Storage Information
Keep It Stable. Keep It Performing.
Store Castrol Alusol indoors between 5°C and 45°C, protected from direct sunlight, frost and moisture.
Keep containers tightly sealed to prevent contamination, preserve emulsion stability and maintain product quality throughout its shelf life.
Take the Next Step
Talk to Our Experts or Schedule a Trial
Castrol Alusol series helps improve tool life, maintain stable emulsions, enhance machining efficiency, and ensure consistent results when processing aluminium alloys, ferrous materials, and mixed-metal applications.