Blackening Chemicals For Automotive Industries - Blackening chemicals are used in the automotive industry to provide corrosion resistance, enhance - appearance, and improve lubrication properties of metal parts. Here are some common types of - blackening chemicals used in the industry: *Types of Blackening Chemicals 1 Cold Blackening Chemicals - Used at room temperature - Forms a black oxide or conversion coating - Suitable for mild steel, cast iron, and some alloys - Often used for small components like nuts, bolts, and fasteners 2 Hot Blackening Chemicals - Involves immersion in heated solutions (~140–150°C) - Produces a deep black oxide finish with good wear resistance - Common for automotive parts like gears, shafts, and bearings.* Blackening Chemicals manufacture.