Republic Posted November 20, 2019 Report Share Posted November 20, 2019 (edited) Does anyone know what type of steel the M50 receiver is made of? Edited November 20, 2019 by Republic Link to comment Share on other sites More sharing options...
StrangeRanger Posted November 20, 2019 Report Share Posted November 20, 2019 H&R's manufacturing drawings are lost to history. From Frank Iannamico's book know that the receivers were machined from bar stock rather than tube. Given the machining involved, the fact that the studs are silver-soldered to the receiver and the induction hardening of the bolt locking notch, I'd bet on a hot-rolled medium carbon alloy steel but that's purely an educated guess Link to comment Share on other sites More sharing options...
Republic Posted November 20, 2019 Author Report Share Posted November 20, 2019 Regarding the locking shoulder of the receiver, does anyone know if they were through-hardened, or just surface-hardened? Link to comment Share on other sites More sharing options...
StrangeRanger Posted November 20, 2019 Report Share Posted November 20, 2019 They were induction hardened Link to comment Share on other sites More sharing options...
Republic Posted November 20, 2019 Author Report Share Posted November 20, 2019 They were induction hardened Thanks! We learned about hydrogen embrittlement in a metal working class I'm auditing at the local community college. I was just wondering what, if anything, was done to mitigate the effects of hydrogen embrittlement on the locking shoulder when these were parkerized back in the 1940s. I see a lot of Reisings on the market that appear to be recently parkerized, and I wonder if the possibility exists for issues to occur as a result of the locking shoulder material becoming brittle. Link to comment Share on other sites More sharing options...
BillyDixon Posted November 22, 2019 Report Share Posted November 22, 2019 ive never seen a reising with a chipped locking shoulder area, i have seen locking shoulders with a raised burr, which may imply soft area , able to polish these our so bolt slides smootr again, just sayn Link to comment Share on other sites More sharing options...
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