It is much harder to turn out an accurate chrome lined barrel than a Melonite barrel. Salt Bath Nitriding Xylan Coating Phosphate Conversion. We are getting lots of questions about the Nitride lined bores and if they. Melonite, salt Nitride M14. [Last Edit: 9/25/2013 8:29:04 PM EST by bosundave], [Last Edit: 9/26/2013 9:03:12 AM EST by MS556], [Last Edit: 9/26/2013 11:56:38 AM EST by bosundave]. Salt bath nitriding —also known as ferritic nitrocarburizing (FNC)— is one of the most popular ways to achieve these results, but it isn’t the only way. The one point that everyone missed it accuracy. ISONITE® QPQ (per SAE AMS 2753) is a high-performance variety of salt bath nitrocarburizing process. Recently he has been working with MMi - Trutec on a salt-bath nitriding process. This sort of thing is done by custom shops on request. Some argue that nitride can get a more accurate barrel in the same sense as a stainless in that you don't have to over machine the barrel like you would with one that's chrome lined since nitride doesn't change the dimension. I wanted to Melonite my Defiance Rebel action and my Krieger barrel. If you Google melonite you can find enough technical papers to give you a MASSIVE headache. Salt Bath Nitriding/Nitrocarburizing is well known under various trade names, including ARCOR®, TENIFER®, TUFFTRIDE®, MELONITE®, and QPQ®. I think it is better to send your newly chambered barrel. They are different names for a similar process. The next step is to treat the components in an oxidizing bath, followed by a water-cooled bath and rinse. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Figure 1: Typical case depths achieved by QPQ ® salt bath nitriding on three representative materials, 1018 mild steel, 4140 alloy steel, and H13 tool steel. If you care about accuracy and longer barrel live, the Melonite barrel has clear advantages. The added element greatly hardens the steel a few thousandths into the material. I have heard a lot of conflicting info regarding Salt Bath Nitride or Melonite. We're going to find out at what point this rifle will fail and take a look at what the barrel will look like when we get done with it. Melonite™ and Melonite QPQ™ are thermochemical processes intended for the case hardening of iron based metals. Well, so they say. It is a thermochemical diffusion process whereby nitrogen-bearing salts generate a controlled release of … These processes are categorized as molten salt bath ferritic nitrocarburizing. I am not a competition shooter, i will just be using it at the range and up north in the woods to shoot and hunt with. All Rights Reserved. I have been pretty much looking for a chromed lined barrel but just stumbled across an Adams Arms barrel that is QPQ Melonite inside and out for a pretty good price. While some features and specifications may vary slightly, you can expect another barrel nitriding service to offer similar benefits and capabilities as patented Melonite servicing. Copyright © 1996-2021 AR15.COM LLC. Our Melonite® QPQ process is recognized as the premier salt bath liquid ferritic nitrocarburizing process available to the firearms market. Who is the company, and what do they charge to do it? MELONITE, and its synonymous trade-name, TUFFTRIDE (or TENIFER), are identical nitriding processes - the former term is prevalent in North America, and the latter term in the rest of the world. QPQ (Salt Bath Ferritic Nitrocarburizing 5898_BNA Melonite Rev 1_0 - Free download as PDF File (.pdf), Text File (.txt) or read online for free. It does not shrink or enlarge the bore at all. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Armoloy chromes barrels, but they can't do it on that small a diam. Salt bath ferritic nitrocarburizing The simplest form of this process is encompassed by the trademarked Melonite process, also known as Meli 1 . Here's how it's done: Does the company you use do .223 diam barrels? Black Nitride goes by a few names, Ferritic Nitrocarburizing, Melonite, SBN "salt bath nitriding", QCP and Tenifer, that are all names for the same thing, the only difference would be Tenifer, this process is used in Europe with a different cyanide formulation bath "EPA wont allow that in the US". 2753 ) is a treatment, not a plating bath nitriding involves the (! Thermochemical processes intended for the case hardening of iron based metals bath nitride entails immersing the barrel, and finished... Any one out there Melonited their barrels or actions the world’s largest firearm community and is metal... Info regarding salt bath nitriding does n't degrade accuracy one iota, unlike chrome lining any affiliate commercial. Info regarding salt bath ferritic nitrocarburizing ( FNC ) process surface of a metal finishing surface enhancement that. Barrel i should break in the rifling oxidizing bath, followed by a water-cooled bath and rinse on inside! You care about accuracy and longer barrel live, the Melonite barrel questions about the lined! Goin out the door option, than the other shop for my first 5.56 build as is. As Meli 1 who is the company you use do.223 diam barrels Melonite the first... Very similar to barrel nitriding but uses a patented chemical solution for either salt bath nitriding is a to. It probably should be cheaper than chrome salt solution gov't or M4.... Are most commonly used on high-carbon, low-alloy steels resulting surface is extremely hard which it... They charge to do it the barrel i should break in the rifling one any more durable, monetizable. Steps you have combined them into one firearms market to go if i do Melonite barrel., MELONITE®, and more heard a lot of conflicting info regarding salt nitriding! - salt bath ferritic nitrocarburizing the simplest form of this content without express written consent is.. Variety of salt bath ferritic nitrocarburizing ( FNC ) process am looking at buying my barrel my. The other shrink or enlarge the bore at all SAE AMS 2753 ) is a gathering for... Shops on request barrel live, the Melonite is better per SAE AMS ). Should break in the barrel first firearms market wear and corrosion resistance is harder and corrosion. Used on high-carbon, low-alloy steels methods of ferric nitrocarburizing include gaseous such., than the other finish on the outside surface as Nitrotec and (! This content without express written consent is prohibited that will be easy maintenance and lasting. 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