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12L14 Barrel Steel (Read 13620 times)

Flatlander Oldtimer Offline Posts: 597 Location: Warm Arizona Joined: Apr 24^th, 2004	12L14 Barrel Steel Jan 14^th, 2016 at 1:42pm	Print Post
	As I do not want to hijack another thread that brought up a concern for me: Please enlighten me on the use of 12L14 for barrels. It is my understanding that many of the "good" barrel makers in the 1980's (Coors Schuetzenfest era) used this steel for their barrels. I do know Green Mountain used it for their early cartridge barrels. I personally have one 40 cal Winchester Hi Wall barrel by Barry Darr (?) and one 45 cal Green Mountain (This one is stamped 12L14 on the breech end and "For Black Powder Only" on the top) on a Sharps, and I am concerned. Being all I use is black (no smokeless) in them, is it understood they should be safe or should I scrap them on the side of caution? What about all the others one does not know about floating around? Flatlander

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KAF Ex Member	Re: 12L14 Barrel Steel Reply #1 - Jan 14^th, 2016 at 2:06pm	Print Post
	L means the material is "free machining" or containing lead in very small amounts. 12L14 bar is a standard resulfurized and rephosphorized grade carbon Steel, and a free machining steel. The added lead to the chemical composition provides improved machinability. Although the machinability is very good, the added lead content reduces the overall strength of this alloy. Typical applications include high-speed screw machine products, spindles, bushings, hose fittings and many other items where excellent machining characteristics can be fully utilized. brinell hardness is around, 163 (You need to *Login* or *Register* to view media files and links)


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Flatlander Oldtimer Offline Posts: 597 Location: Warm Arizona Joined: Apr 24^th, 2004	Re: 12L14 Barrel Steel Reply #2 - Jan 14^th, 2016 at 2:31pm	Print Post
	Thanks much. That link answered a lot of questions. Flatlander

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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 11346 Location: Why, out West of course Joined: May 29^th, 2006	Re: 12L14 Barrel Steel Reply #3 - Jan 14^th, 2016 at 3:28pm	Print Post
	Bad stuff that 12L14. Send all your barrels to me. I will dispose of them for you. Joe.

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Flatlander Oldtimer Offline Posts: 597 Location: Warm Arizona Joined: Apr 24^th, 2004	Re: 12L14 Barrel Steel Reply #4 - Jan 15^th, 2016 at 10:54am	Print Post
	Joe: I would assume you would dispose of them one round at a time?

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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 11346 Location: Why, out West of course Joined: May 29^th, 2006	Re: 12L14 Barrel Steel Reply #5 - Jan 15^th, 2016 at 11:05am	Print Post
	Was shooting my .22 Stevens with a 12L14 barrel yesterday. Dang it shoots good! New RKS barrel. Yep, send me all them soft barrels. Joe.

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Flatlander Oldtimer Offline Posts: 597 Location: Warm Arizona Joined: Apr 24^th, 2004	Re: 12L14 Barrel Steel Reply #6 - Jan 15^th, 2016 at 12:53pm	Print Post
	Now that is a nice looker! Flatlander

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40_Rod Frequent Elocutionist Offline Extremism in the persuit of accuracy is not a vice Posts: 4285 Location: Knoxville, TN Joined: Apr 20^th, 2004	Re: 12L14 Barrel Steel Reply #7 - Jan 16^th, 2016 at 8:54am	Print Post
	In a .22 rimfire with an schuetzen weight barrel I wouldn’t worry about a barrel made from screw machine steel. Centerfires are a different story the danger escalates with larger calibers. The harder the pounding the more likely it will cause fractures in the sulfurized steel. The dangers go up as the temperature drops as the sulfur becomes brittle at lower temperatures. 40 Rod


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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 11346 Location: Why, out West of course Joined: May 29^th, 2006	Re: 12L14 Barrel Steel Reply #8 - Jan 16^th, 2016 at 10:39am	Print Post
	Mine don't. Have a 40-65 with a bazillion duplex rounds through it with no problems at all. Huh? Joe

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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 11346 Location: Why, out West of course Joined: May 29^th, 2006	Re: 12L14 Barrel Steel Reply #9 - Jan 16^th, 2016 at 12:48pm	Print Post
	Then there was the time in Kentucky, this old timer was telling me how much his daughter could drink before she started threatening the other women at a party while I was muzzle loading my .38 Hepburn. I loaded two 300 grain bullets, loaded a shell and fired. Duplex load, both bullets hit the target and the barrel didn't burst. Won a BR match with it after that incident. How is that possible? Simply amazing! Let's see, what else can I think up to worry about, hmmmmmm........? Joe.

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frnkeore Frequent Elocutionist Offline Posts: 7184 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: 12L14 Barrel Steel Reply #10 - Jan 16^th, 2016 at 12:52pm	Print Post
	Quote: Let's see, what else can i think up to worry about, hmmmmmm........? How about double charging a 32/40 Ballard? Frank

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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 11346 Location: Why, out West of course Joined: May 29^th, 2006	Re: 12L14 Barrel Steel Reply #11 - Jan 16^th, 2016 at 10:32pm	Print Post
	Been done Frank. How bout shooters eye strain and how it effects Macular Pucker? Joe.

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uscra112 Frequent Elocutionist Offline Posts: 4075 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: 12L14 Barrel Steel Reply #12 - Jan 17^th, 2016 at 12:28am	Print Post
	40_Rod wrote on Jan 16^th, 2016 at 8:54am: In a .22 rimfire with an schuetzen weight barrel I wouldn’t worry about a barrel made from screw machine steel. Centerfires are a different story the danger escalates with larger calibers. The harder the pounding the more likely it will cause fractures in the sulfurized steel. The dangers go up as the temperature drops as the sulfur becomes brittle at lower temperatures. 40 Rod I've been trying to search for the "metallurgists letter" that ypu referred to in the other thread. No Joy. Could you provide a pointer? Or republish? Thanks! Phil

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argie1891 Senior Forum Member Offline Posts: 262 Location: selah, washington Joined: Jul 8^th, 2010	Re: 12L14 Barrel Steel Reply #13 - Jan 17^th, 2016 at 12:28am	Print Post
	The softer steel will most often stretch rather than burst or fracture. I think if there were a problem it would be visible before it burst. now I am not talking about extremely high pressure you can blow just about anything up if you try hard enough. I am talking about normal loads. that said I am sure there will not be any problem unless the load is on the hot side and you beat the rifle up with continued use of higher than normal pressure. I would use 12l14 steel more if I could find it in other than round and octagon I have looked and cant find square and flat. most of what I make doesn't require high strength but good finish is nice.

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shovel80 Oldtimer Offline Posts: 896 Location: Sonora,CA Joined: Jun 6^th, 2011	Re: 12L14 Barrel Steel Reply #14 - Jan 17^th, 2016 at 12:56am	Print Post
	argie1891, I buy square bars of 12L14 from Speedy Metals on Line! Terry

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