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
Barrel and Action Nitride Coating
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="shortgrass" data-source="post: 2782394" data-attributes="member: 24284"><p>I have heat treated (case hardened) actions and stress relieved them. I stress relieve because quenching can and will induce stress. You are confusing tempering and stress relieving. These are 2 different processes. I have heat hardened and tempered many other parts made of CM steel. The process is the same for a rifle barrel as any other part made of CM. I have , also, hardened and tempered many other tool steels and Century series steels. Barrel steel arrives hardened and tempered from the mill. The specs for the steel are specified by the purchaser (the barrel or action maker) for purity and any additional alloying elements. The barrel maker (or action maker) may stress relieve before, during or after machining, or all 3 times depending upon his process. Harden 4140 and don't temper and you'll ruin a file trying to cut it, which means you'd never successfully rifle it. Temper it, which lowers its hardness, but not to the annealed state, and it is easily filed and machined. Hardened and NOT tempered and it's brittle. After temper, the 'brittle' no longer exists and the part made from the hardened and tempered steel will handle shock and heavy loads. Where as hardened and not tempered will not, as it is brittle, it may be strong but won't handle much shock or load. Specs for hardening and tempering 4140 are easily found on-line, published by heat treating firms and scientific groups. Have you ever made a barrel or stress relieved them? Hardening, tempering and stress relieving steels for barrels and actions is no different than hardening, tempering and stress relieving the same steel for other uses. Tempering is also known a 'drawing back'.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 2782394, member: 24284"] I have heat treated (case hardened) actions and stress relieved them. I stress relieve because quenching can and will induce stress. You are confusing tempering and stress relieving. These are 2 different processes. I have heat hardened and tempered many other parts made of CM steel. The process is the same for a rifle barrel as any other part made of CM. I have , also, hardened and tempered many other tool steels and Century series steels. Barrel steel arrives hardened and tempered from the mill. The specs for the steel are specified by the purchaser (the barrel or action maker) for purity and any additional alloying elements. The barrel maker (or action maker) may stress relieve before, during or after machining, or all 3 times depending upon his process. Harden 4140 and don't temper and you'll ruin a file trying to cut it, which means you'd never successfully rifle it. Temper it, which lowers its hardness, but not to the annealed state, and it is easily filed and machined. Hardened and NOT tempered and it's brittle. After temper, the 'brittle' no longer exists and the part made from the hardened and tempered steel will handle shock and heavy loads. Where as hardened and not tempered will not, as it is brittle, it may be strong but won't handle much shock or load. Specs for hardening and tempering 4140 are easily found on-line, published by heat treating firms and scientific groups. Have you ever made a barrel or stress relieved them? Hardening, tempering and stress relieving steels for barrels and actions is no different than hardening, tempering and stress relieving the same steel for other uses. Tempering is also known a 'drawing back'. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel and Action Nitride Coating
Top