Astro-Cut BCL HW

Astro-Cut BCL HW

Product & Safety Datasheets


ASTRO-CUT BCL-HW 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-HW is designed for the machining and grinding of virtually all metals, except magnesium, and contains chlorine as an extreme pressure additive for greater lubricity. ASTRO-CUT BCL HW incorporates unique additives to prevent the formation of hard water soaps in systems with extremely hard water.


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


Concentration4% 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-Concentrate Amber Liquid
Appearance- Dilution Translucent amber
Residual Film Soft, fluid
pH @ 20:1 9.1 ± 0.2
Specific Gravity @ 60°F 1.0 ± 0.03
Lbs/ gal 8.34 ± 0.1
Total Chlorine, wt % 1.0
Flash point, PMCC None