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Castrol Almaredge™ 420 (previously known as Cooledge 420) is a general purpose soluble metalworking fluid which is chlorine and boron-free. It contains an additive package that provides good lubrication properties and performs well in a wide water range. Almaredge 420 can be used in single sump machines as well large systems.
Unit of Measure

Package Type

 N/A Tote

Concentrate Appearance

 N/A Amber

Dilution Appearance

 N/A Milky

Potential of Hydrogen (pH) at 20:1 Ratio

 N/A 8.5 pH

BRIX Factor

 N/A 0.9

Applications

 N/A Almaredge 420 is a versatile product recommended for general machining on cast iron, low-medium alloy steel, aluminium alloys and yellow metals.

Suggested Applications
Grinding: Low-medium alloyed steel, high-alloyed stainless steel, aluminum alloys, yellow metals
Milling, Turning:  Low-medium alloyed steel, aluminum alloys, yellow metals
Drilling: Low-medium alloyed steel, aluminum alloys, yellow metals
Reaming, Tapping: Low-medium alloyed steel, aluminum alloys, yellow metals
Broaching: Aluminum alloys, yellow metals

Possible Applications*
Grinding: Cast iron
Milling, Turning: Cast iron, high-alloyed stainless steel
Drilling: Cast iron, high-alloyed stainless steel
Reaming, Tapping: Cast iron, high-alloyed stainless steel
Broaching: Cast iron

Drilling

 N/A 5 to 7 %

General Machining

 N/A 4 to 7 %

Grinding

 N/A 3 to 5 %

Reaming

 N/A 7 to 10 %

Tapping

 N/A 7 to 10 %

Water Range

 N/A CaCO3: 100-600 ppm

Features and Benefits

 N/A
  • Boron free for environmental compliance and improved residue characteristics
  • Chlorine and nitrite free to fulfill your local legislation, waste treatment and environmental requirements.
  • Versatile product suitable for wide range of materials and operations
  • Low foam in recommended water conditions
  • Provides rust protection to machinery and parts in process and is non-staining to copper and brass.
  • Contains > 60% mineral oil

Storage and Handling

 N/A To avoid product deterioration always keep the container/drum tightly sealed. Store the product in a cool, dry place away from direct sunlight. Prevent exposure to frost and avoid water ingress. For optimum product stability, it is preferable to store the product indoors between 5°C and 45 °C / 41°F and 113°F.