Parker Gun Collectors Association Forums  

Go Back   Parker Gun Collectors Association Forums Parker Forums General Parker Discussions

Notices

Reply
 
Thread Tools Display Modes
Embrittlement in gun barrel steels-
Unread 07-27-2010, 11:19 PM   #1
Member
Old and Reliable
PGCA Member

Member Info
 
Join Date: May 2009
Posts: 1,246
Thanks: 1,674
Thanked 363 Times in 239 Posts

Default Embrittlement in gun barrel steels-

In code welding, hydrogen embrittlement in the HAZ of the weldment can cause failure- in fabrication and structual grade steel- so preheat, post heat and use of low-hydrogen filler rods (AWS code 7018 for example) can prevent this form of weld failure-

As Damascus and twist barrels were "welded" so to speak- ie: heat and hammer blows of the twists of iron and steel over a mandrel, would trace hydrogen also play a part in latent embrittlement in these barrels?

Ductility would usually result from Mn and Si added to the steel during the BOF (or later, electric melt) furnace- but the iron strips, a different story perhaps-

I was just out shooting barn pigeons today with two of the 12 gauge Parkers- the GHE with Vulcan Steel barrels, and the PH with parker twist barrels- shot RST 2 & 3/4 dram 1 & 1/8th oz. No. 8 and Win 2 &3/4 dram lite 1 oz no. 9 shells- never have had one problem with that PH made in 1902 using those lower pressure loads, and the birds seem to crumple up in the air at my comfortable pass shooting range- no need for the more expensive HV loads at all- no recoil, easier on the wallet too-
Francis Morin is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:39 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright © 1998 - 2025, Parkerguns.org
Copyright © 2004 Design par Megatekno
- 2008 style update 3.7 avec l'autorisation de son auteur par Stradfred.