Castrol Almaredge 51 FF is a semi-synthetic, water-miscible metalworking fluid formulated without boron and without formaldehyde-releasing agents. It is designed for a wide range of grinding and general machining operations on ferrous and non-ferrous alloys.
The fine, stable emulsion delivers excellent cooling and flushing performance, reliable corrosion protection and long fluid life, helping to improve tool life and surface finish while keeping system maintenance low.
Recommended ConcentrationsGrinding 4-6%
General Machining 6-8%
Drilling 7-10%
Reaming and tapping 8-13%
Broaching 8-13%
Water range 50-400 ppm CaCO3
FAQ – Frequently Asked Questions about Castrol Almaredge 51 FF
Which materials is Almaredge 51 FF suitable for?
It is formulated for machining steels, cast iron and selected non-ferrous materials in light to medium duty machining operations.
Can Almaredge 51 FF be used in central coolant systems?
Yes, it is suitable for both individual machine sumps and central coolant supply installations.
Is Almaredge 51 FF boron- and chlorine-free?
Yes, the formulation contains no boron or chlorine and complies with modern HSE and sustainability standards.
What is the recommended working concentration?
Typically 4–10 % depending on machining severity and material.
Which water hardness range is recommended?
Best stability can be achieved within medium water hardness conditions.
