ASTRO-CUT B is a semi-synthetic BIOSTABLE 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 B is designedfor the machining and grinding of virtually all metals, except magnesium and is formulated without the use of chlorine, phenols, nitrites or DCHA.

Product Data Sheet


ASTRO-CUT B is designed for use in all metalworking applications such as CNC milling, turning, drilling, tapping and grinding. ASTRO-CUT B is also excellent on cast iron 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 2.0 2.5 3.0 3.5 4.0 4.5 5.0

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/Gallon8.33 ± 0.1
Total Sulfur, wt %None
Flash point, PMCCNone