Nitride Treated Barrels?

[IPSC_GUY]

Ok I have seen Nitrided Bolts and Bolt carriers before but never barrels. In this application does any know how well it is actually holding up? Interesting alternative to Chrome lining.

IPSC_GUY
SIERRA II ALPHA

[VLODPG]

IIRC LWRC is doing them!

[markm]

IIRC LWRC is doing them!

A good hint that it's a snake oil scam.

I haven't seen them lying about this yet on the Mil Channel yet? Is there a lag before their lies air on Futard Weapons?

I can't imagine why LWRC would need to do this since according to the goofball rep on Futard Weapons their barrels already last TWICE as everyone else's barrels.

[VLODPG]

A good hint that it's a snake oil scam.

I haven't seen them lying about this yet on the Mil Channel yet? Is there a lag before their lies air on Futard Weapons?

I can't imagine why LWRC would need to do this since according to the goofball rep on Futard Weapons their barrels already last TWICE as everyone else's barrels.

Markim,

In your opinion there is no benefit over chrome lining? I can't answer this from personal experience but from things I have read on the Internet, it appeared promising.

Again, it's just what I read & now hope the 6.8 barrel that I just purchased with this treatment lives up to the hype!

[Thomas M-4]

The Sig 550 is supposed to have a nitride treated barrel it has been done in Europe for years.

I don't care for LWRC but nitride treated barrels and hammer forged barrels all are supposed to extend usable barrel life. I have not seen any documentation that the nitride treatment will out last chrome lining.

[variablebinary]

The Sig 550 is supposed to have a nitride treated barrel it has been done in Europe for years.

I don't care for LWRC but nitride treated barrels and hammer forged barrels all are supposed to extend usable barrel life. I have not seen any documentation that the nitride treatment will out last chrome lining.

Chrome lining wears in, what, 5000 rounds is the consensus. Nitride increases surface hardness quite a bit, which means it wont wear as fast as chrome

I'd be willing to wager a 4140 RRA/Wilson barrel can hold its own in terms of barrel life and accuracy against a chrome lined CHF barrel

[Mjolnir]

The Sig 550 is supposed to have a nitride treated barrel it has been done in Europe for years.

I don't care for LWRC but nitride treated barrels and hammer forged barrels all are supposed to extend usable barrel life. I have not seen any documentation that the nitride treatment will out last chrome lining.

With salt bath nitrocarburization there is "no need" for the cold hammer forging - or stainless steel barrels.

Why?

No need for the several million dollar tooling though one can make a barrel per minute with CHF process at or near final dimensions. Besides, cut rifling produces a more accurate rifle and grooving with the least amount of stresses.

One can treat stainless steel but it actually loses corrosion resistance from this process and it won't be as hard as the chromoly steel (nor as tough for 416) and it's slightly more difficult to machine - surface speed is less so it's cut at a slower rate.

With the tougher, less expensive steel with less internal stresses (and cheaper tooling) I can then use ferritic nitrocarburization to make the surface nearly impervious to corrosion and the chamber, land and grooves should be tougher than hard chrome without the issues of geometric anomalies and flaking.

Look at H&K, Sig Sauer, Glock, Walther and FNHUSA - all carbon steel; and S&W for martensitic stainless steel. In Europe, several use the process (I believe) - and they also use different (read "better") alloys like 9310.

I was told by Accuracy International at SHOT 2006 that they nitrocarburize their barrels. I'm told they hold their accuracy for "well over 15,000 rounds." I don't own one so I cannot give you firsthand results.

I have experimental results comparing ferritic nitrocarburization, Tungsten DLC and hard chrome somewhere in storage. I'll try to ferret it out.

[variablebinary]

Nitride is a not a coating, but a metal treatment which increases surface hardness, corrosion resistance, with no degraded accuracy like chrome lining.

You take even a stainless barrel, nitride it, and you end up with a barrel with will last 20k rounds without breaking a sweat and hold it's accuracy

[mark5pt56]

http://www.yuntaa.com/FileManager/Do...4400144FB7B71E


http://en.wikipedia.org/wiki/Ferritic_nitrocarburizing

[Littlelebowski]

Nitride is a not a coating, but a metal treatment which increases surface hardness, corrosion resistance, with no degraded accuracy like chrome lining.

Just because a barrel's chrome lined, does not mean it's inaccurate or less accurate per se than a steel barrel.. My old FN SPR shoots (sold it to a friend) right around .25 MOA with FGMM.