SKU: BA13425
UPC: 029057134254
MPN: BC-13425
Birchwood Casey Super Blue is a double-strength cold blueing solution built for shooters and hobbyists who want to touch up or fully reblue polished steel without heating tanks or salts. It works on highly polished steel parts and hardened steels containing nickel and chrome alloys, with the one exception of stainless. This 3 oz bottle is the formula reach for when standard cold blue won't bite into harder metals or won't pull a finish dark enough. Per manufacturer specifications, Super Blue is rated as the company's blackest blue, making it a common pick for restoration work and small parts that need a deep, even tone.
The chemistry here is what sets Super Blue apart from a standard cold blue. It is an extra-strength selenium-based formula that reacts with the steel surface to lay down a dark black-blue color, and that extra strength is why it takes on hardened alloys that weaker solutions skip over. Surface prep drives the result: parts need to be clean, degreased, and polished before application, since any oil or residue will leave streaks or blotches. Work in thin coats, card the surface between passes, and rinse and oil when the color is right. Confine the solution to the area being treated, because it can affect surrounding existing blue. A clean rod and patch setup like a J. Dewey rod helps keep small parts handled cleanly during prep.
Super Blue earns its place on the bench for spot repairs on scratched or worn finishes, rebluing screws and small components, and restoring older guns where the original finish has thinned. Hold parts steady during application and follow up with a quality oil to seal the new finish; a light gun oil works well for that final pass. Pair it with a gun vise to keep frames secure while you card and recoat. Browse the rest of our Birchwood Casey finishing line for stock and metal care to round out a refinishing project.
Super Blue is a double-strength formula rated as Birchwood Casey's blackest blue. The extra strength lets it take on harder steels and nickel-chrome alloys that weaker cold blue solutions struggle to color, and it pulls a deeper black-blue tone on polished surfaces.
No. Super Blue is formulated for polished steel and hardened steels containing nickel and chrome alloys, but stainless is specifically excluded. Stainless does not react with the solution the same way, so it will not take an even finish.
Surface prep is everything. Clean and degrease the part fully, then polish before application. Apply in thin coats, card the surface between passes, and rinse and oil once the color is right. Any oil or residue left on the metal will cause streaks.
It can. Confine the solution to the area being reblued, since contact with surrounding existing blue may alter it. Masking off adjacent areas and working in small sections helps keep the new color contained to the parts you are treating.
The 3 oz bottle is sized for spot repairs, small parts, screws, and touch-up work rather than large surface refinishing. Coverage depends on coats and how much carding and recoating each part needs to reach the final color.
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