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Forums10
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Jul 28th, 2025
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Joined: Jan 2006
Posts: 9,758 Likes: 460
Sidelock
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OP
Sidelock
Joined: Jan 2006
Posts: 9,758 Likes: 460 |
I fixed the access issues on the website July 1, 1920 American Machinist published an Ordnance Salvage Board Surplus Property Sale of almost 75,000 pounds of Spec. Shape Gun Steel from the A.H. Fox Gun Co. with C .15-.25%, Mn .5-.7% and S & P < .06% - AISI 1020 and likely frame steel https://books.google.com/books?id=ezRMAQAAIAAJ&pg=RA1-PA409&lpg
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Joined: Jan 2002
Posts: 11,572 Likes: 165
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 11,572 Likes: 165 |
Thanks again for your efforts, Doc Drew!
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Joined: Jun 2002
Posts: 9,350
Sidelock
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Sidelock
Joined: Jun 2002
Posts: 9,350 |
Drew is educating me. I didn't know anything about 95 per cent of this, having hard time hoisting aboard technicalities. I am grateful for what I'm reading.
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Joined: Jan 2006
Posts: 9,758 Likes: 460
Sidelock
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OP
Sidelock
Joined: Jan 2006
Posts: 9,758 Likes: 460 |
Wrong thread Frank. Dropped off a c.1929 Fox Sterlingworth action and barrel at METL this am. The machinists had tears in their eyes again 
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Joined: Jan 2006
Posts: 15,462 Likes: 89
Sidelock
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Sidelock
Joined: Jan 2006
Posts: 15,462 Likes: 89 |
Just think...you might have saved someones life, limb or eyeball.
Your money might be better spent on magnaflux testing.
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Joined: Feb 2008
Posts: 11,786 Likes: 673
Sidelock
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Sidelock
Joined: Feb 2008
Posts: 11,786 Likes: 673 |
Yeah jOe... this thread is concerned with the virtual non-issue of shotgun frame composition. It is a virtual non-issue because the design of the frame probably has as much or more to do with the rare problems of cracking and stretching than the type of steel they were made of. Heat treatment or lack thereof is another variable that would have to be considered to arrive at any valid conclusions. It might be more interesting and educational to experiment with different steels to see what effect different compositions have on the outcome of case hardening colors. Lots of variables to consider in that process too. Other than that... this subject has far less practical usefulness than threads on hinge pin lubricants.
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Joined: Feb 2016
Posts: 3,539 Likes: 453
Sidelock
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Sidelock
Joined: Feb 2016
Posts: 3,539 Likes: 453 |
Thanks Doctor...fascinating...and good solid work. I'm learning. a bunch.
Baluch are not Brahui, Brahui are Baluch
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Joined: Jan 2006
Posts: 9,758 Likes: 460
Sidelock
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OP
Sidelock
Joined: Jan 2006
Posts: 9,758 Likes: 460 |
Just for perspective, AISI 8620 is a chromium, molybdenum, nickel alloy steel often used for modern shotgun frames, and is easily carburized and machined when annealed Carbon - .18 - .23% Manganese - 0.7 - 0.9% Chromium - 0.4 - 0.6% Molybdenum - 0.15 - 0.25% Nickel - 0.4 - 0.7% Phosphorus - 0.035% max. Sulfur - 0.04% max Nice short version regarding the components & alloys https://www.linkedin.com/pulse/21-chemical-elements-effects-steel-mechanical-properties-jeremy-he/ The Hunter Arms frames had a very high Sulfur concentration, which improves machinability but lowers transverse ductility.
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Joined: Jan 2006
Posts: 9,758 Likes: 460
Sidelock
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OP
Sidelock
Joined: Jan 2006
Posts: 9,758 Likes: 460 |
Results are in
c. 1929 Sterlingworth Fluid Compressed Steel
Carbon .44%
Manganese .79%
Phosphorus .027%
Sulphur .038%
Nickel .04%
Chromium .03%
Molybdenum <.01%
Vanadium <.01%
AISI 1040
Tensile Strength psi
86,000 psi Yield...103,000 psi Ultimate
The Sterlingworth action was non-standard AISI 1020 with low concentrations of Chromium (.08%) and Nickel (.07%) compatible with the Ordnance Salvage Board steel listed above.
This might be of interest to the Fox fellas, and feel free to post on the Forum.
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Joined: Dec 2001
Posts: 3,604 Likes: 12
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 3,604 Likes: 12 |
Drew,
Have a 12ga Flues frame here. Cracked at the junction of the watertable and standing breech.
I need some parts from it for another Flues, but I don't need the frame.
Yours if you want it. I don't check in here regularly so you can email me at: Marksman60@hotmail.com
EDIT: Missed your email in your opening post. Will send you an email .
Last edited by Utah Shotgunner; 05/29/19 04:50 PM. Reason: Lack of reading comprehension.
Mike
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