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Reciever material
Unread 01-21-2022, 12:57 PM   #1
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Default Reciever material

I looked at 1892 PH the other day and had a question about the material used in the receiver. Notice the parallel lines on all sides, if I were to see something like that in my day to day I would assume it was likely wrought iron. I had assumed that the receivers were made of mild steel, even on the early guns but I just dont know.
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Unread 01-21-2022, 01:13 PM   #2
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Those lines were a result of “Bulldozing” the hot forged ingot, but I don’t know if ingot is the correct word for the chunk of steel the frame was made from.

I have a couple of 0-frame GH’s that show those lines.


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Unread 01-21-2022, 01:23 PM   #3
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I'd wager those lines came long after the gun was made (assuming I'm looking at the lines you mention).
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Unread 01-21-2022, 02:41 PM   #4
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Quote:
Originally Posted by Garry L Gordon View Post
I'd wager those lines came long after the gun was made (assuming I'm looking at the lines you mention).
Nope, the lines were formed in the forging process. Early Winchester lever guns all have those lines.
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Unread 01-21-2022, 03:02 PM   #5
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Picture added to my previous post.





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Unread 01-21-2022, 03:06 PM   #6
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The lines are known as "striations".
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Unread 01-21-2022, 03:27 PM   #7
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Thanks Dean and Bruce. That makes sense but if they are only found on older guns then I might still think iron. Do you see that on guns after 1900 or so? You can see ghosting of forging process in both iron and steel but the two materials show it differently. Though forging temp can be a factor too.
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Unread 01-21-2022, 03:43 PM   #8
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Billet is probably the word.
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Unread 01-21-2022, 04:32 PM   #9
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Quote:
Originally Posted by Bruce P Bruner View Post
Nope, the lines were formed in the forging process. Early Winchester lever guns all have those lines.
Not the first wager I've lost.
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Unread 01-21-2022, 11:23 PM   #10
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Quote:
Originally Posted by Aaron Beck View Post
Thanks Dean and Bruce. That makes sense but if they are only found on older guns then I might still think iron. Do you see that on guns after 1900 or so? You can see ghosting of forging process in both iron and steel but the two materials show it differently. Though forging temp can be a factor too.
If I’m not mistaken you can’t readily case harden iron due to the high carbon content. Case hardening works by putting high carbon material next to low carbon material at a high temp to encourage carbon migration. The bigger the carbon difference the better the result (and some other factors). As to why the striations disappeared after 1900 or so - i would chalk that up to process inovation. There is value to eliminating those striations therefore company’s producing parts would want to eliminate them.

From my engineering perspective, I would probably spec in a low to mid carbon steel (1018 or 1045 ish?)…Generally speaking the receiver sees minimal load if the action is tight. The hinge pin and closure mechanism take the brunt. The loading of the receiver is spread out across the surface area of the shell and absorbed well by the hardened layer. The highest point of stress is at the corner of the action, and it would be subject to fatigue failure so a steel without a fatigue knee defined would be ideal. I’ll have to see if I can find my old stress analysis simulations from college. It was interesting stuff.
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