Case hardening question

I'm working on a Savage .17 HMR for a neighbor , and he's lost a part
. The spring clip that retains the firing pin , extractor , and
"cartridge guide" has broken and the guide piece is lost - and I haven't
been able to source one to replace it . The spring is on order from
Numrich as soon as they can get their doors back open it should be on
the way . The guide is basically a mirror image of the extractor , and I
have one 90% complete , but I'm wondering if I need to case harden it .
I have the stuff , but have one question about post-hardening heat
treatment . Where this is a thin layer of hard over a soft core , I'm
wondering if I just need to heat , dip in the Kasenite , reheat to red
heat and quench , or do I need to temper it after hardening . Or even if
I need to harden it at all , It's not under a lot of stress , and the
only metal to metal contact will be with brass cases . This is a very
small part , about .060" thick by .140" wide and about an inch long .
Reply to
Snag
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You probably did, but did you check with Brownells? They have some Savage parts.
Reply to
John B.
I'f think case hardening would extend it's life. The soft core would give it strength. Generally case harfened parts are used "as is" or "as treated".
Reply to
Clare Snyder
Yup , and their selection of Savage parts does not include this one .
Reply to
Snag
That's what I thought , but it never hurts to check with folks that heave more experience with this sort of thing .
Reply to
Snag
part . The spring clip that retains the firing pin , extractor , and "cartridge guide" has broken and the guide piece is lost - and I haven't been able to source one to replace it . The spring is on order from Numrich as soon as they can get their doors back open it should be on the way . The guide is basically a mirror image of the extractor , and I have one 90% complete , but I'm wondering if I need to case harden it . I have the stuff , but have one question about post-hardening heat treatment . Where this is a thin layer of hard over a soft core , I'm wondering if I just need to heat , dip in the Kasenite , reheat to red heat and quench , or do I need to temper it after hardening . Or even if I need to harden it at all , It's not under a lot of stress , and the only metal to metal contact will be with brass cases . This is a very small part , about .060" thick by .140" wide and about an inch long .
I would make parts like that out of spring steel. I've got a small sheet I bought from McMaster 15years ago that is hardly smaller than when I bought it that has made a bunch of parts over the years.
Reply to
Bob La Londe
Am Mittwoch, 13. Mai 2020 16:21:45 UTC+2 schrieb Bob La Londe:
How thick is that spring steel from McMaster, and how do you cut it to size?
Thanks!
Chris
Reply to
Christopher Tidy

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