Disabled1
US Veteran
I own a FS MP .40 1.0 that was made November 2015. Was S&W still using the Melonite process then, or had they gone to the new Armornite process? 

Ah, a rose by any other name is still a rose.
We were told in a M&P pistol recert that the company had decided they wanted to stop paying more for a nitriding process for which they had to pay royalties (trade name), so they decided to buy the equipment and start doing it themselves.
I only hope they know what they're doing. The nitriding process is such that if you fudge it you can really screw up the metal. You're dealing with a pretty delicate balance of temperature to case harden the steel without messing up the temper of the core.
That's good, makes me feel a bit better about it. I wasn't gonna lose any sleep over it but the treatment on the 1.0's was really nice and it would be a shame if the 2.0's was inferior. It seems to be pretty good bit only time will tell. I did notice right away though that it was different in some way. Can't quite put my finger on it but it's not the same as my 1.0's.
Ah, a rose by any other name is still a rose.
Before I sold my Glock 17.4 I was on a few Glock websites. They were stating the same thing about the Gen 4 finish. They stated it was nothing like the Gen 1-3 finish on prior Glocks. So, it seems that S&W is not the only gun manufacturer with the Melonite Blues.
Fastbolt said:...Personally, one option I'd like to see used more often is the application of a PVD coating applied over their through-hardened stainless steel.
I don't know what you mean by "through-hardened." As I understand it, the SBN process is a bit like case-hardening: it creates a relatively thin but harder, more rust- and scratch-resistant surface but doesn't greatly change the rest of the metal below the surface. That's supposedly good -- as if it were hardened all the way through, it could be a problem (making the metal almost brittle.)
I wish gunmakers would just come up with a cosmetic layer that was either very durable, or easily touched up with additional material (like a car touch-up paint) from the gun maker.
Smakmauz said:...I guess "technically" nitriding isnt really a case hardening... because it's a chemical conversion process that happens to be done with pretty hot solution instead of strictly through a heat treating process like real case hardening.
Actually, nitriding IS a form of case hardening. Case hardening is a term that describes the RESULT of a hardening process (an encasement of softer metal) rather than the PROCESS.