ASTRO-CUT HD XBP is a heavy duty BIOSTABLE semi-synthetic high pressure metalworking coolant. ASTRO-CUT HD XBP combines the superior chemical flexibility of synthetics with mineral oil and a chlorinated extreme-pressure additive. ASTRO-CUT HD XBP has exceptional foam control, hard water stability and tramp oil rejection. It provides outstanding extreme-pressure lubricity for machining and grinding virtually all metals, particularly Aluminum, Stainless Steels and other hard to machine alloys. ASTRO-CUT HD XBP is not recommended for use on Magnesium. ASTRO-CUT HD XBP is does not contain DCHA.