Hot Blackening

Ultra-Blak 400 is a premium-grade powdered oxidizing agent that produces a deep anthracite-black finish on steel and steel alloys.

Drag out 5–30 pounds of Ultra-Blak 400 per week per 100-gallon tank.

Ultra-Blak 400-L is the liquid version of Ultra-Blak 400. This premium-grade liquid solution produces one of the darkest black finishes possible.

Drag out 1–5 gallons of Ultra-Blak 400-L per 100-gallon tank every week.

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.