BLACKENING

A versatile blackening solution used to blacken stainless steel alloys 200, 300, 400, and 17-4 Ph, malleable cast iron, and mild, low-carbon steels.

Use Ultra-Blak 407-L give stainless steel parts sleek black finishes, work with a hot-temperature black-oxide solution, ensure dimensional stability, give black-oxide baths an initial charge and meet MIL-DTL-13924D Class 4 standards.

A dry-to-touch, hard-film, solvent-based lubricant and rust and corrosion inhibitor for ferrous and non-ferrous metals that produces 50 hours of salt spray resistance. Meets military spec for water displacement (Mil-C-16173D, Grade 3).

A slightly oily solvent and calcium-based lubricant and rust and corrosion inhibitor for ferrous and non-ferrous metals that produces 110–130 hours of salt spray.