Presto Black Blackening System

April 27, 2016

Manufacturers needing immediate corrosion protection on small quantities of parts can get it with all of the quality of larger finishing systems using Birchwood Technologies’ Mini PRESTO BLACK line. The BK-1 line is a low-cost alternative and/or substitute for large scale finishing. This mini PRESTO BLACK room-temperature blackening system for iron and steel from Birchwood Technologies is great for small production operations that require robust corrosion resistance and galling protection on critical surfaces for machine components.

The PRESTO BLACK process produces a virtually nondimensional coating of less than 0.5 micron thickness and is ideally suited for components that require a black finish for visual appeal and rust protection. PRESTO BLACK is a short 15-minute process that eliminates the hazards of the hot oxide process by operating at room temperature of 70°. It provides high corrosion resistance and is tested for up to 800 hours humidity exposure when sealed with an appropriate rust preventive.

PRESTO BLACK is used effectively on hot rolled steels, alloy steels, tool steels, as well as cast iron, forged steels and powdered metal. It protects the underlying metal itself from galling and deformation.

The PRESTO BLACK BK-1 system contains seven tanks and covers, hot-plate (for heated cleaner), plus all the chemicals needed to operate a 5 gallon blackening line. This includes 1 gallon of Presto Black MKP, 1 gallon of Presto Black RPL, 5 gallons of Dri-Touch Plus IRP3 water displacing sealant and complete easy to follow instructions.

Related Glossary Terms

  • alloy steels

    alloy steels

    Steel containing specified quantities of alloying elements (other than carbon and the commonly accepted amounts of manganese, sulfur and phosphorus) added to cause changes in the metal’s mechanical and/or physical properties. Principal alloying elements are nickel, chromium, molybdenum and silicon. Some grades of alloy steels contain one or more of these elements: vanadium, boron, lead and copper.

  • corrosion resistance

    corrosion resistance

    Ability of an alloy or material to withstand rust and corrosion. These are properties fostered by nickel and chromium in alloys such as stainless steel.

  • galling


    Condition whereby excessive friction between high spots results in localized welding with subsequent spalling and further roughening of the rubbing surface(s) of one or both of two mating parts.

  • micron


    Measure of length that is equal to one-millionth of a meter.

  • tool steels

    tool steels

    Group of alloy steels which, after proper heat treatment, provide the combination of properties required for cutting tool and die applications. The American Iron and Steel Institute divides tool steels into six major categories: water hardening, shock resisting, cold work, hot work, special purpose and high speed.


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