Monroe Fluid Technology



Heavy-duty biostable water soluble cutting and grinding fluid

ASTRO-CUT C is a heavy duty biostable soluble oil concentrate containing a chlorinated additive for difficult machining operations. This product was designed to be extended with water for the machining and grinding of virtually all metals except magnesium. ASTRO-CUT C is excellent on high silicon aluminum alloys.

Part No. Quantity
36-050 5 Gallon Pail
36-104 1 Gallon Bottle

BIOSTABILITY refers to the ability of a metalworking coolant to resist extreme biological degradation. This provides extremely long sump life in a properly maintained machine tool and diminishes the possibility of "Monday Morning Odor".
Designed for use in metalworking applications such as all CNC milling, turning, drilling, tapping, and grinding. ASTRO-CUT C is also excellent on conventional machining processes and sawing applications.
  • Eliminates Need for Tankside Additives
  • Superior Tramp Oil Rejection
  • Low Foaming
  • Operator Friendly
  • Mild, Pleasant Odor
  • Excellent Lubricity
  • Excellent Corrosion Inhibition
  • Clean Running
  • Excellent Hard Water Stability
  • Provides Excellent Finish
  • Reduced Overall Cost
  • Long Lasting
  • Appearance - concentrate:
Amber Liquid
  • Appearance - dilution:
Opaque Amber-White
  • Odor:
  • Residual Film:
Soft, Fluid
  • pH @ 20:1:
(5 %) 9.2 + 0.3
  • Specific Gravity @ 60° F.
0.95 + 0.03
  • Lbs./Gal.
7.91 + 0.1
  • Total Chlorine. wt %
  • Flash Point, COC, ° F.
Concentration - ASTRO-CUT C:
  • Concentration:
4% (1:25) 5% (1:20) 6% (1:17) 7% (1:14) 8% (1:12) 9% (1:11) 10% (1:10)
  • Refractometer Reading:
4.6 5.7 6.8 8.0 9.1 10.3 11.4
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:
25:1 (4%)
  • Milling, Drilling, Turning:
Between 20:1 (5%) and 10:1 (10%)
  • 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.

IMPORTANT! At concentrations below 4%, the biostability of this product may be compromised, leading to much shorter sump life. To insure maximum coolant life, sump should be thoroughly cleaned and neutralized using ASTRO-CLEAN A prior to charging machine with ASTRO-CUT C.
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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