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Bookmark or Share- Cold Hammer Forged vs 4150 Chrome lined Barrels - AR15.COMThe current barrel for the M16/M4 is made from chromium-molybdenum-vanadium alloy, with button rifling, and chromium plated bore and chamber. In an effort to increase barrel life to +15,000 rounds various materials and manufacture methods were investigated. A foreign manufacturer claimed good results with "GKH" steel and cold rotary forging.
- Barrel Steel: 4150, 4140, Chrome Moly, Chrome Moly Vanadium - AR15.COM4140 grade of steel – The “40” in 4140 is specific to the amount of carbon in the alloy. Generally it is near .40%. Likewise the “50” in 4150 steel is an indicator that the barrel steel has a carbon content near .50%. An 11595 barrel steel (Mil-Spec) gets its additional strengthening properties over the common commercial 4140 by one ...
- Stainless vs Chrome Moly Barrel Accuracy | Sniper's Hide ForumThe bright shiny silver just does not do it for me. However I've read that stainless is often a better choice because it won't rust and is much more resistant to the environment in general. In addition, most replacement barrels seem to be in stainless steel. Regardless, my main concern is accuracy and performance.
- stainless vs 4140 vs 4150 - chrome lined - AR15.COMCMV is basically 4150 with added Vandium for even GREATER wear resistance. Sabre and I think Denny's newest barrel is CMV. These barrels (if chrome-lined) have gone 30,000 rds. before being considered worn. Chrome-lined means the chamber / bore has a hard chrome coating for added wear resistance, ease of cleaning, and increased corrosion ...
- What is chrome moly vanadium? - AR15.COMQuoted: Chrome, molybdenum, and vanadium are impurities added to steel to give it corrosion resistance and other properties. 'Chrome moly vanadium' is almost certainly to do with the steel the barrel is made of, while a "chrome lined" barrel is, well, lined with chrome for high wear and corrosion resistance in the bore and chamber.
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