GreatLandKennoZ
Plastic
- Joined
- May 10, 2017
hello all, i am a Koyukon savage living here on mine and my people's homeland of Alaska. i am going to introduce the first ever gun invented by a westerner like myself. i have the design pretty much ready to be machined into a real life single shot prototype that i will improve upon until i have a working repeater design.
i was reading around and ran into some posts saying 32 rockwell for 4140 isn't enough to handle a catastrophic failure where the chamber/barrel turn into bombs. it got me wondering, what is the sweetspot for metal to be just hard enough to handle a high pressure round or barrel blockage, but be tough enough to not crack or be brittle.
i was planning on using 4340 with some vanadium, but ive heard it is more prone to cracking than standard 4140, not sure if this is true because i never really read those metallurgy books i have all the way through, just those big idea boxes off to the side.
if 4340 is suitable for action requirements, do you think 39 rc after heat treatment is right on the money or if i should go high or lower
basically this post is here to discuss the most premium alloy steels and hardening methods for making guns.
manufacturing would go something like order 4340 unhardened 1.5" round stock, drill bolt hole, broach raceways roughly, then send out to heat treat, and machine to final spec after heat treating. hope this discussion is broad and gives me new ideas and some insight into making guns that are safe
i was reading around and ran into some posts saying 32 rockwell for 4140 isn't enough to handle a catastrophic failure where the chamber/barrel turn into bombs. it got me wondering, what is the sweetspot for metal to be just hard enough to handle a high pressure round or barrel blockage, but be tough enough to not crack or be brittle.
i was planning on using 4340 with some vanadium, but ive heard it is more prone to cracking than standard 4140, not sure if this is true because i never really read those metallurgy books i have all the way through, just those big idea boxes off to the side.
if 4340 is suitable for action requirements, do you think 39 rc after heat treatment is right on the money or if i should go high or lower
basically this post is here to discuss the most premium alloy steels and hardening methods for making guns.
manufacturing would go something like order 4340 unhardened 1.5" round stock, drill bolt hole, broach raceways roughly, then send out to heat treat, and machine to final spec after heat treating. hope this discussion is broad and gives me new ideas and some insight into making guns that are safe