Koolkut®HD NC

Chlorine-Free, Medium-Duty Cutting Oil
Phillips 66®Koolkut HD NC is a chlorine-free active cutting oil developed for medium-duty machining of cast iron, steel and high-speed steel. It is specially formulated with high quality base oils and fortified with oiliness additives and sulfur-containing extreme-pressure additives that provide excellent lubricity and anti-weld properties at the chip-tool interface, resulting in extended cutting tool life and good surface finishes on the machined parts.

Features & Benefits

• Excellent performance in most difficult machining operations

• Helps extend cutting tool life

• Good surface finish

• Chlorine-free for reduced environmental impact

• Transparent for good visibility of the machining operation


Koolkut HD NC is recommended for light- to medium-duty machining of ferrous metals. Typical applications include:

• Boring

• Broaching

• Drilling

• Reaming

• Sawing

• Tapping

• Threading

Technical Details

Licenses & Approvals
Additional Details
ISO Grade32
Specific Gravity @ 60°F0.883
Density, lbs/gal @ 60°F7.35
Color, ASTM D15006
Flash Point (COC), °C (°F)235 (455)
Pour Point, °C (°F)-15 (5)
cSt @ 40°C30
cSt @ 100°C5
SUS @ 100°F155
SUS @ 210°F43
Viscosity Index87
Copper Corrosion, ASTM D1301b
Chlorine, wt %Nil
Fatty Oil, wt %5
Sulfur, Total, wt %2.2
Sulfur, Active, wt %2.05