Monroe Fluid Technology



Heavy duty water soluble cutting and grinding fluid

MONROE HD is a heavy duty water extendable sulfur-chlorinated metalworking coolant formulated to offer outstanding performance in difficult machining and grinding operations involving hard-to-work metals such as stainless steel, tool steels and high nickel alloys. MONROE HD may be used on all metals except magnesium, copper and some bronze alloys, which may be stained.

MONROE HD will perform as well as straight oil in most applications.

Part No. Quantity
12-050 5 Gallon Pail
MONROE HD is suited for all types of machining processes including turning, milling, tapping, reaming, broaching, hobbing, and sawing.

This product also works well in the various grinding processes, including centerless, cylindrical, surface, internal, belt, and disc.
  • Used to Replace Straight Oils in Most Operations
  • Excellent Finish in Machining and Grinding Operations
  • Increases Tool Life
  • Better Cooling than Oils
  • Excellent Corrosion Inhibition
  • More Economical than Straight Oil
  • Appearance - concentrate:
Dark Brown Viscous Liquid
  • Appearance - dilution:
Tan Milky Liquid
  • Residual Film:
Soft, Fluid
  • pH @ 20:1:
(5 %) 9.5 ± 0.3
  • Specific Gravity @ 60° F.
0.96 ± 0.01
  • Lbs./Gal.
8.1 ± 0.1
  • Total Sulfur, wt %
  • Total Chlorine, wt %
  • Flash Point, PMCC, ° F.
Concentration - MONROE-HD:
  • Concentration:
3% (1:33) 4% (1:25) 5% (1:20) 6% (1:17) 7% (1:14) 8% (1:12) 9% (1:11) 10% (1:10)
  • Refractometer reading:
3.4 4.5 5.6 6.7 7.8 9.0 10.1 11.2
An optical refractometer may be used for determining concentration. These numbers are typical and are not to be construed as specifications.
Recommended Starting Dilutions:
  • Centerless, ID, OD, Surface Grinding:
33:1 (3%)
  • Milling, Drilling, Turning:
20:1 (5%)
  • Tapping, Reaming, Sawing:
10:1 (10%)

When mixing coolant, it is best to use an automatic proportioner which accurately and thoroughly mixes coolant. Always replenish the coolant with a mixture of coolant and water, not just coolant or water. Never add coolant concentrate directly to the sump.
View Monroe Fluid Technology's Website for Product Data Sheet and MSDS
The information presented on this page is for informational purposes only. Please ensure the accuracy of the data from the manufacturer's Product Data Sheet and Material Safety Data Sheets listed above.

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