Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Nitride a barrel?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Taj" data-source="post: 3070443" data-attributes="member: 98000"><p>I was an LE field rep/ armorer instructor for a big pistol maker when they first came into the US. They used Tenifer as a finish which is a brand name for a salt bath quench nitrate finish. Never had an issue with early 9mm pistols however when the .40 S&W hit the streets issues started popping up in the form of barrel catastrophic failures. .40 pressures and of course the bore/groove diameter in the same parent barrel didn't help matters. They would never publicly admit to a problem and blamed it on ammo makers. In fact, they were one of the major reason SAAMI lowered the max chamber pressure of the .40S&W. . (from 36k to 32k if I remember right) No one else was having the same issue. A Sgt that ran the range at a very large PD in Texas was also head of IALEFI (International Law Enforcement Firearms Instructors Assoc) had several failures (with a couple of minor injuries) and sent pistols off to HG White labs for eval. It was discovered that the Tenifer process was creating microscopic "checking" in the finish and metal surface. The checking ( nitrogen embrittlement) would continue to migrate through the barrel metal until at some point in that pistols life, it would no longer proof like it did when new. A combo of this and any ammo anomaly was a recipe for a failure. The pistol maker did no additional heat treat on their barrels other than the Tenifer treatment. S&W heat treated their barrels which limited the nitrogen embrittlement migration. They were using Melonite, which is the same basic process. My point is, it's a great, very tough finish but has some draw backs if not done correctly and I believe that the parent product it is applied to, can greatly affect the performance results.</p></blockquote><p></p>
[QUOTE="Taj, post: 3070443, member: 98000"] I was an LE field rep/ armorer instructor for a big pistol maker when they first came into the US. They used Tenifer as a finish which is a brand name for a salt bath quench nitrate finish. Never had an issue with early 9mm pistols however when the .40 S&W hit the streets issues started popping up in the form of barrel catastrophic failures. .40 pressures and of course the bore/groove diameter in the same parent barrel didn't help matters. They would never publicly admit to a problem and blamed it on ammo makers. In fact, they were one of the major reason SAAMI lowered the max chamber pressure of the .40S&W. . (from 36k to 32k if I remember right) No one else was having the same issue. A Sgt that ran the range at a very large PD in Texas was also head of IALEFI (International Law Enforcement Firearms Instructors Assoc) had several failures (with a couple of minor injuries) and sent pistols off to HG White labs for eval. It was discovered that the Tenifer process was creating microscopic "checking" in the finish and metal surface. The checking ( nitrogen embrittlement) would continue to migrate through the barrel metal until at some point in that pistols life, it would no longer proof like it did when new. A combo of this and any ammo anomaly was a recipe for a failure. The pistol maker did no additional heat treat on their barrels other than the Tenifer treatment. S&W heat treated their barrels which limited the nitrogen embrittlement migration. They were using Melonite, which is the same basic process. My point is, it's a great, very tough finish but has some draw backs if not done correctly and I believe that the parent product it is applied to, can greatly affect the performance results. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Nitride a barrel?
Top