ASTRO-CUT BCL is a heavy duty BIOSTABLE semi-synthetic general purpose metalworking coolant containing approximately 20% mineral oil. This product, when diluted with water, forms a translucent amber emulsion which offers excellent workpiece visibility, good lubricity, and superior cooling. ASTRO-CUT BCL is designed for the machining and grinding of virtually all metals, except magnesium, and contains chlorine as an extremepressure additive for greater lubricity.

Product Data Sheet


ASTRO-CUT BCL is designed for use in metal removal operations such as all CNC milling, turning, drilling, tapping, and grinding. ASTRO-CUT BCL is also excellent on conventional machining processes and sawing applications.

Recommended Concentrations


Concentration 4% 5% 6% 7% 8% 9% 10%
Ratio 1:25 1:20 1:17 1:14 1:12 1:11 1:10
Refractometer 2.1 2.6 3.1 3.6 4.2 4.7 5.2

Typical Properties

Appearance-ConcentrateAmber liquid
Appearance- DilutionTranslucent amber
Residual FilmSoft, fluid
pH @ 20:19.1 ± 0.2
Specific Gravity @ 60°F1.0 ± 0.03
Lbs/Gallon8.34 ± 0.1
Flash point, PMCCNone