Blackodizing is a process for blackening iron & steel by simple immersion. This process will blacken a wide range of
alloy steels. This process will not blacken stainless steel. It has moderate corrosion resistance. Coating will
withstand from 2 to 6 hours in 20% salt spray, which is sufficient for most indoor use. For outdoor use, additional
protection should be provided by oiling, waxing, or lacquering the work after blackening .The thickness of Black
Oxide coating ranges from 0.06 to 0.12 micron.