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Posted: 11/10/2018 4:07:15 AM EDT
[#1]
It isn’t strong enough.
Titanium is strong for its weight, not its volume. |
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Posted: 11/10/2018 1:39:04 PM EDT
[#2]
And, depending on the application and alloy, Ti tends to gall.
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Posted: 11/10/2018 8:32:51 PM EDT
[#3]
Quote HistoryQuoted:
And, depending on the application and alloy, Ti tends to gall. |
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Posted: 11/10/2018 8:55:58 PM EDT
[#4]
Quote HistoryQuoted: Seems like that would be more of an issue with the Bolt Carrier which suffers from the most rubbing friction, and Ti carriers seem to hold up fine. Just because a material is great in some applications, like airplanes, does mean it is great in all applications. |
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Posted: 11/10/2018 9:23:16 PM EDT
[#5]
Quote HistoryQuoted:
The locking lugs have to rotate against the extension lugs while there is a significant load between the two. It also has half the shear strength of 9130 or Carpenter 158. Just because a material is great in some applications, like airplanes, does mean it is great in all applications. Given your knowledge of Ti properties, do you know any good reason why Titanium wouldn't work for 3 prong flash hiders? I've been confused why there are so many options for Titanium compensators or birdcage devices, but not true titanium flash hiders. |
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Posted: 11/10/2018 10:26:38 PM EDT
[#6]
Titanium would work fine in a flash suppressor application but definitely not work in a bolt.
There are SEVERAL titanium flash suppressors available. |
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Posted: 11/10/2018 10:46:28 PM EDT
[#7]
Quote HistoryQuoted:
There are SEVERAL titanium flash suppressors available. |
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Posted: 11/10/2018 11:23:56 PM EDT
[#8]
I’m not aware of any open prong titanium flash suppressors but there are several flash suppressors.
https://christensenarms.com/product/titanium-ar-flash-hider/ https://www.strongsidetactical.com/v-seven-a2-raw-titanium-flash-hider/ https://www.dsarms.com/p-16398-dsa-ar15-titanium-enhanced-bird-cage-long-flash-hider-12x28-grey-finish.aspx https://www.tacticallink.com/2A-Armament-T3-Titanium-Compensator-for-AR15-5.56-.223-2A-T3-TiComp.html https://www.impactguns.com/AR-15-Parts/V7-Weapon-Systems-5-56-Black-Titanium-Flash-Hider-V-Grooved-Satin-Finish-FH-A2-EV-BLK-FH-A2-EV-BLK/ |
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Posted: 11/11/2018 7:00:59 PM EDT
[#9]
Quote HistoryQuoted: Hmm, that's interesting to learn. Maybe there could still be a bolt that has steel front end/locking lugs/extractor, but then has a titanium back end... Given your knowledge of Ti properties, do you know any good reason why Titanium wouldn't work for 3 prong flash hiders? I've been confused why there are so many options for Titanium compensators or birdcage devices, but not true titanium flash hiders. The loads on a bolt lugs are as high as 140 KSI. |
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Posted: 11/11/2018 11:23:47 PM EDT
[#10]
Quote HistoryQuoted:
There are almost no loads on a flash hider.... The loads on a bolt lugs are as high as 140 KSI. Sheared bolt lugs would be almost guaranteed inside of a low round count. 158 alloy attains a core strength of approximately 160 ksi (1103 MPa) tensile strength with a yield point of approximately 135 ksi (931 MPa). TITANIUM 3 PRONG HIDER 
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Posted: 11/12/2018 1:21:46 AM EDT
[#11]
My .02 on that unit, if I was going to use it I’d have my local machine shop remove the threads.
BATF has been going berserk over “solvent traps”. |
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Posted: 11/12/2018 1:42:45 AM EDT
[#12]
Quote HistoryQuoted:
My .02 on that unit, if I was going to use it I’d have my local machine shop remove the threads. BATF has been going berserk over “solvent traps”. |
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Posted: 11/12/2018 6:41:59 AM EDT
[#13]
Quote HistoryQuoted:
My .02 on that unit, if I was going to use it I’d have my local machine shop remove the threads. BATF has been going berserk over “solvent traps”. 
Don't let the company name scare you. 
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Posted: 11/12/2018 7:16:08 AM EDT
[#14]
Quote HistoryQuoted: Seems like that would be more of an issue with the Bolt Carrier which suffers from the most rubbing friction, and Ti carriers seem to hold up fine. The forces on the carrier are nothing in comparison to the forces the bolt itself deals with |
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Posted: 11/19/2018 12:44:49 AM EDT
[#15]
Quoted: Hmm, that's interesting to learn. Maybe there could still be a bolt that has steel front end/locking lugs/extractor, but then has a titanium back end... |
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Posted: 11/19/2018 9:26:56 PM EDT
[#16]
Quote HistoryQuoted: Weight savings with a full Ti bolt would be negligible; just a Ti rear end would be pretty much pointless. Ti has a very high strength to weight ratio, but it's not that light, and not nearly as strong as many steels. .160 lbs/cu.in. for 6/4 Ti vs. .284 lbs/cu.in for 9310 |
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Posted: 11/19/2018 9:30:34 PM EDT
[#17]
Quote HistoryQuoted:
Titanium alloy (grade 5) has a fracture toughness of 68.3 ksi. Sheared bolt lugs would be almost guaranteed inside of a low round count. 158 alloy attains a core strength of approximately 160 ksi (1103 MPa) tensile strength with a yield point of approximately 135 ksi (931 MPa). |
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Posted: 11/19/2018 9:47:38 PM EDT
[#18]
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Posted: 11/19/2018 10:03:47 PM EDT
[#19]
Sounds brittle... I don't like my bolts brittle.
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Posted: 11/19/2018 10:37:41 PM EDT
[#20]
Quote HistoryQuoted:
Sounds brittle... I don't like my bolts brittle. Titanium bolts simply won’t hold up. |
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Posted: 11/20/2018 1:03:00 AM EDT
[#21]
Quote HistoryAlready have titanium BCG's, but I was just looking for a way to save weight on the bolt as well.
Not sure why the titanium BCG's are so meaty, I'm thinking about getting the back end of it shaved down.. |
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Posted: 11/20/2018 1:28:00 PM EDT
[#22]
Quote HistoryQuoted: Titanium is about 60% the weight of steel, and the bolt weighs about 3.5 oz if I remember correctly, so the weight could be reduced by about 1.4 oz which on an ultra lightweight build is enough to justify a couple hundred bucks easily. Hell, people pay over $100 just to upgrade the bolt catch to titanium and that's under half an ounce weight lost. |
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Posted: 11/20/2018 2:34:50 PM EDT
[#23]
Quote HistoryQuoted: Already have titanium BCG's, but I was just looking for a way to save weight on the bolt as well. Not sure why the titanium BCG's are so meaty, I'm thinking about getting the back end of it shaved down.. It’s a hybrid carrier, it’s titanium in the front and aluminum in the rear. 
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Posted: 11/21/2018 1:13:11 AM EDT
[#24]
Quote HistoryQuoted: According to my digital postage scale, a standard bolt with gas rings, extractor & ejector installed is 1.55 oz, so full Ti would get you down to about 1.0 oz. Just the tail? Even if there were a feasible way to do it, you'd save only about .3 oz. Better, cheaper ways to cut that weight. Like .005" less barrel diameter. |
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Posted: 11/21/2018 6:53:48 AM EDT
[#25]
Quote HistoryQuoted: nobody makes a lightweight bolt, so it's the only part that currently is not as light as it could be... 
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Posted: 11/21/2018 3:24:09 PM EDT
[#26]
Quote HistoryQuoted:
It is the best area to save weight because nobody makes a lightweight bolt, so it's the only part that currently is not as light as it could be... Titanium carrier key An ACTUAL Carbon Fiber (mat) upper & lower receiver (and yes, it would be damn expensive) The barrel, it COULD go quite a bit lighter than anyone has dared to go. The FN P90/PS90 has a barrel diameter PAST the chamber of .428! It would probably be very prudent to wrap it with Carbon Fiber for rigidity. It’s the exact same bore diameter as the AR-15 (.224) And it’s close in pressure (52,000 C.U.P.) There are other places to cut weight but it all comes down to one thing...................money. It’s conceivable that a 2 pound AR is possible, but it could wind up costing north of $3,000.00 - $4,000.00 |
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Posted: 11/23/2018 5:04:01 AM EDT
[#27]
Quote HistoryQuoted: Yeah, but for an ultralight build where literally every single component down to the last little screw has been selected based on it being the lightest available component on the market, the steel bolt then becomes the best area to save weight. It is the best area to save weight because nobody makes a lightweight bolt, so it's the only part that currently is not as light as it could be... |
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