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Houghton Intl. metalworking fluid earns Pratt & Whitney approval

Houghton Intl., Valley Forge, Pa., has received approval from Pratt & Whitney, a United Technologies company, for the use of Hocut® 4940 metalworking fluid in the production of its aircraft engines and military power units under the Pratt & Whitney reference PMC 9151.

Pratt & Whitney approved the fluid for contact with gas turbine engine parts made from a variety of aerospace alloys including aluminum, steel, stainless steel, nickel-based alloy, single-crystal nickel alloy, cobalt-based alloy, magnesium, titanium, and titanium-based alloy.