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Meh. Guns aren't where the money is.
https://www.AR15.Com/media/mediaFiles/206831/20190404_155956_jpg-1152590.JPG

https://www.AR15.Com/media/mediaFiles/206831/20190108_110944_jpg-1152594.JPG

https://www.AR15.Com/media/mediaFiles/206831/20180403_172243_jpg-1152607.JPG

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Kudos to the guys who had the patience to offer some wisdom early on.  The OCD replies sound like hog molars grinding nacre.

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Larry is the MAN!

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Inconel is exceptional for use in high pressure, high temp (absolute temp and temp delta) applications...but it's pricey and a massive pain to work with.

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I'm interested in the science/engineering of firearms, automobiles, aero etc in general like a lot of us are and always looking for the next best thing to "make it better."   I watched some YouTube videos of people torture testing their AR's and AK's and the only gun I saw survive the test of 2,300+ rounds of full auto was the POF P416 from Iraqveteran8888.  It seemed in those videos the barrel was the weakest link and heat was the culprit.  Also, the links of Battlefield Las Vegas here at this forum on reading about guns with 200,000 rounds fired through them got me thinking on ways to increase the lifespan and longevity of firearms that are put through extreme abuse.

I Googled up "Heat resistant steel alloys" and first link I saw this...
https://www.hpalloy.com/Alloys/hightemperature.aspx

HASTELLOY ® Alloy X (HX)
(UNS N06002) Ni 47.5, Cr 21.8, Fe 18.5, Mo 9.0
"Excellent high temperature strength and oxidation resistance to 2200°F. Excellent forming and welding characteristics. Resistance to oxidizing, reducing, and neutral atmospheres. Resistant to SCC in petrochemical applications. Good ductility after prolonged service temperatures of 1200, through 1600°F for 16,000 hours. Gas turbine combustion cans and ducting, heat-treating equipment, spray bars, flame holders, furnace rolls, furnace baffles, and flash drier components."

Hastelloy X is a nickel-chromium-iron-molybdenum superalloy with outstanding high temperature strength, oxidation resistance, and fabricability. Alloy X’s oxidation resistance is excellent up to 2200° F...
http://megamex.com/hastelloy_x.htm

Could that some day be used in firearms like barrels for fully automatic fire for prolonged periods of time?

Also, your opinions on lithium alloys 2055 and 2099 for receivers compared to 7075 T6.

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Probably not the same place but I remember doing a couple test shots like that for DoD.

We were supplied with a piece of metal 12"x12"x1" and told that they wanted it bonded to some grade III Ti with no interlayer. They wouldnt say what it was or really give the engineers any specs for it other than hardness, ductility/heat info.

We ended up doing a "hot shot" with it, it got put it in the heat treat oven and the rest of the shot was set up out in the site. It was removed from the oven, raced out to the site in a pickup, set, and shot within 2 minutes.

It somewhat stuck to the Ti, but the bond was shit and it shattered like a safety glass window. Whatever it was could not take the pressures and angles involved.

.Gov still paid though  

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It seems beyond unlikely that OP isn’t a retread.

For the record OP “know it all” people, that actually know nothing, and do nothing but argue and insult actual SME’s are the reason less of them post here.

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It seems beyond unlikely that OP isn’t a retread.

For the record OP “know it all” people, that actually know nothing, and do nothing but argue and insult actual SME’s are the reason less of them post here.

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It's why I mostly stopped posting about armor. That and the occasional heated discussion with one or two bottom feeding liars in the armor industry who were endangering people's lives.

Whether guns, tac gear, armor, or whatever, one thing I discovered is that fan boys who have purchased shit gear will white knight it, even when shown direct, documented evidence of flaws and deception.

(Not trying to sidetrack.)

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Uh, ya..

So, how are you going to rifle the tube? And ream the chamber? Ya a hastaloy/inconell barrel would be tits in an overbored cartridge. But how ya going to make it? Once all said and done your going to have a $2K+ barrel, that's before fitting and final install. Out of the realm of most shooters.

I've machined both materials in Question and both suck balls.

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I think that he might even be a current Industry Partner.

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This thread I created is fun and I learned about...

So what have we learned on this thread??

Everyone on here besides me is a engineer and mathematician that has either a glorious career in engineering or currently doing all sorts of top level secret govt work.

The "SME's" on here like BURN know more about guns than Navy Seals and Delta Force do.

The self proclaimed "SME's" on here who supposedly work in high tech industries a top level engineering firms build random guns in their garages like the next guy down the street who doesn't have a engineering degree and their garage home builds as just as random and ordinary as the random guy's is down the street.  

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If you guys are gun "experts" do you have any patents?  What firearms manufacturers have you worked for?

Did any of you come up with LMT's patents?  Or Colt's patents?

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I have some patent pendings....so soon...yes...