Cerakote vs DuraCoat vs powder coating

The short version

Cerakote

Cerakote is a ceramic-reinforced polymer coating sprayed on as a thin liquid and, in the H-Series most guns get, baked in an oven to cure. It goes on at roughly one thousandth of an inch, which is why a coated slide still runs on its frame and a coated barrel still threads into its receiver. It is the hardest of the three, rates 9H on the pencil hardness scale, and its corrosion and abrasion results are published by the manufacturer for anyone who wants to read the test methods.

The cost of that performance is prep. Cerakote keys into a blasted surface; it does not stick to oil, old finish or smooth metal. A proper job strips the part, degreases it, media blasts it to a uniform profile, sprays in thin passes and then cures it at temperature. Skip a step and it peels, which is where most "Cerakote flaked off" stories come from. It is a shop job, not a garage one.

There are several series. H-Series is the oven-cure workhorse for firearms. C-Series and Glacier are air-cure, high-temperature coatings for suppressors, exhausts and anything that sees real heat. Elite is a newer oven-cure series with higher chemical and wear resistance. A good applicator matches the series to how the item gets used.

DuraCoat

DuraCoat is a two-part polymer that cures in open air, which is its entire appeal: no oven, kits sold for home use, and a result that looks right on day one. The trade-off is that air-cure coatings are thicker and softer than an oven-cured ceramic, they take weeks to reach full hardness, and they wear through faster at the points a gun actually rubs: slide rails, holster contact, the top of a bolt handle. For a safe-queen or a part that never touches anything, that may not matter. For a carry gun it does.

Powder coating

Powder coating is an industrial finish: a dry powder is charged electrostatically, sticks to the grounded part, and is baked until it flows into a continuous film. It is tough, cheap per square foot, and the right answer for a truck frame, a bumper or a set of brackets. On a firearm it is usually the wrong one. It goes on several thousandths thick, which fills threads, binds slides and changes the fit of anything machined to a tolerance, and it bakes hotter than Cerakote, which some small heat-treated parts and some alloys do not appreciate. It also cannot do the fine masking that a camo or a two-tone needs.

The confusion is understandable, because a lot of Google listings file Cerakote shops under "powder coating". They are different materials, different thicknesses and different jobs.

Bluing and Parkerizing

For completeness: bluing and Parkerizing are not coatings at all but chemical conversions of the steel surface. They add nothing to the dimension of a part and look right on a classic gun, but they offer far less corrosion protection than a modern coating and neither works on aluminum or polymer. Niter bluing, the deep fire-blue on screws, hammers and triggers, is a different process again and is purely decorative. It pairs well with a coated gun as an accent.

Which one to choose

• —A complete firearm, a slide, a barrel, a bolt, a suppressor, a knife, or anything whose parts have to fit together afterwards: Cerakote.
• —Something that will never mate with another part and will never be holstered, carried or dragged through brush, and you want to do it yourself: DuraCoat is workable.
• —A frame, a rail, a mount, a bracket, a vehicle part: powder coat is fine and probably cheaper.
• —A classic gun where authenticity matters more than corrosion resistance: bluing or Parkerizing, done by someone who does it a lot.

For reference, a single-color Cerakote job on a firearm runs $75 – $500 and multi-color patterns run $150 – $800, depending on part count and how much prep it needs. That is the whole process: strip, blast, spray and cure.