There is a small fee for samples shipped in the continental U.S. This can range from $10-$75. Products shipped outside the continental U.S. can be subject to certain restrictions. Freight charges may range from $75-$300.

Room Temperature Black Oxide

Benefits of Room Temperature Blackening (65-85º F - Phosphoric Acid, Selenium and Copper Bath)

  • Blackening time 1-5 minutes
  • Deposit of Copper-Selenide
  • No ventilation required
  • No caustic fumes produced
  • Low capital costs
  • High energy cost savings
  • Ion Exchange Selenium and Copper rinse water
  • Does not meet military spec
  • Satin grey-black color