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What Is Annealing, Why Is It Important For Reloaders?
Annealing is the softening of metal, in this case brass cartridge case necks. The way brass is hardened is by work hardening. Annealing reverses this process, removing internal stresses returning the neck of the case to the ductility as when newly manufactured. Case neck annealing is accomplished by the rapidly heating the neck to 750 Def. F. then allowing it to cool. It’s critical to not over anneal the case neck and also to never anneal the base. The Anneal-Rite pictured above does this very efficiently. Various case holders pictured above (the aluminum blocks) are available to accommodate almost all cases. If you are looking to extend brass life and get improved accuracy as an added benefit from your reloaded brass annealing is the answer. This blog post will explain the process of annealing brass.
As stated annealing the neck of cartridge case brass is accomplished by quickly heating the neck to 750 Deg. F. and then letting it cool. This removes work hardening stresses caused from repeated firing and reloading. Brass that has not been properly annealed will build up work hardening stress and crack, failing by necks cracking around 5 to 7 firing/reloading cycles. Annealing could be accomplished by heating to as low as 482 deg. F as that is the point brass begins to anneal, however the brass would have to be held at that temperature for a very long time maybe an hour or so. This would result in the heat migrating to the case head and also annealing it. The case head is work hardened by the manufacturer in their process of forming and it must remain in this stage. It is critically important to never anneal the case head as it can blow out when fired releasing very high pressure gas which can damage the firearm and the user.
The Annealing Process
Some un-informed people put their cases into the oven at their house and call it quits, this is very dangerous. As stated the neck of cartridge case brass needs to be annealed but never the base. Manufacturers take great pains to every area of a brass case to attain proper hardness, and yes it varies at different places on the case.
There is a very scary video out showing a case heated with a torch until the neck glows very red. Bad news here, that is way over annealed making the neck far too soft usually resulting in the shoulder of the case to collapsing when resized. One man reported over annealing his case necks. Upon firing the case neck adhered to the inside of chamber when fired. He had a lot of hard work, sweat & grief getting the case out of the chamber, some brass tore off adhering to the chamber.
Why Annealing Your Brass Is Important
Simply stated, longer brass life and increased accuracy resulting from consistent neck to bullet tension on every shot.
Annealing Machines
The Anneal-Rite is a very affordable, efficient unit, go to www.cartridgeanneal.com to view an informative demonstration video. This unit is furnished with 750 deg. F. Tempilaq heat indicating fluid which is the proper temperature to anneal cartridge case necks. It is guaranteed accurate to + – 7 1/2 Deg. F. which is in the exact center of the recommended heat. A major brass manufacture stated the low acceptable was 700 & the high 800 Deg. F.
Conclusion
Annealing is an important step in the reloading process. Without it brass prematurely fails with crack necks. Annealing brass using the Anneal-Rite is safe giving perfect results and a money back guarantee. This is an easy, safe process and will save you money in the long run!
Looking for an annealing machine? Enterprise Services, LLC has you covered! When you’re ready to start annealing your brass you want a machine that is efficient, accurate, and reasonable. No product fits that description better than our Anneal-Rite brass annealing system. It anneals cartridge brass necks at exactly 750 Deg. F. it’s sturdy and affordable, perfect results guaranteed. They have US customer service at 479-629-5566 Mon. ~ Sat. 9am to9pm.
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