Correct temper-sear & firing pin?

TennBill2 · 06-01-2011, 08:02 PM

Anyone know of the correct/proper heat treatment applied to the sear and firing pin. In this case I've made my own and wondering how to temper each. This for my 'Borchardt' replica but the pieces are essentially the same as a P08. Bill

regul · 06-04-2011, 08:24 AM

TennBills2
The book "Die Pistole 08" by Joachim Gortz containes hardening and tempering information on each part on pages 124 - 129.
Ed

TennBill2 · 06-04-2011, 10:28 PM

I did check the book on Amazon...$248! That is a new book for me. Think I'll check the library, maybe they can locate a copy! Must be quite a book if it can bring that kind of price! Bill

Vlim · 06-05-2011, 06:01 AM

Tenbill, surprising. That book does about 40 - 50 Euros on German ebay.

Here it goes:

Firing pin:
Steel 25.61. Carbon content 0.25 - 0.30%
25-30 minutes in 'Durferrit' salt bath at 830 degrees celcius.
Hardein in oil.
Dip with the tip (until about the middle of the pin) in a salt bath at 430 - 450 degrees celcius.
Boil off in hot water.

Sear bar:
Steel 25.61. Carbon content 0.25-0.30%.
30 minutes in 'Durferrit' salt bath at 850 degrees celcius. Cool down in oil.
Harden from Durferrit in oil at 760 - 770 degrees celcius.
Anneal tip and cavity to a dark red in a lead bath.
Tempering for 30 minutes at 150 degrees celcius in an oil bath

These are the 1942 Mauser instructions (should be the best of the lot).

regul · 06-05-2011, 08:29 AM

Vlim
I have always wondered if Durferrit was a brand or trade name for sodium nitrate blueing salts. Thank you for translating the text for TennBills2. I was hoping one of the German speaking/reading members would.
Thanks
Ed

John Sabato · 06-06-2011, 09:08 AM

Gerben,

Thanks for documenting the information here on the forum for all to see...

TennBill2 · 06-06-2011, 11:44 AM

Thanks for the info! Bill

06-01-2011, 08:02 PM	#1
TennBill2 RIP Join Date: Feb 2011 Posts: 101 Thanks: 0 Thanked 17 Times in 6 Posts	Correct temper-sear & firing pin? Anyone know of the correct/proper heat treatment applied to the sear and firing pin. In this case I've made my own and wondering how to temper each. This for my 'Borchardt' replica but the pieces are essentially the same as a P08. Bill

06-04-2011, 10:28 PM	#3
TennBill2 RIP Join Date: Feb 2011 Posts: 101 Thanks: 0 Thanked 17 Times in 6 Posts	Thanks I did check the book on Amazon...$248! That is a new book for me. Think I'll check the library, maybe they can locate a copy! Must be quite a book if it can bring that kind of price! Bill

06-06-2011, 09:08 AM	#6
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,153 Thanks: 3,003 Thanked 2,304 Times in 1,096 Posts	Gerben, Thanks for documenting the information here on the forum for all to see... __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*

06-04-2011, 08:24 AM	#2
regul Patron LugerForum Patron Join Date: Sep 2002 Location: VA Posts: 96 Thanks: 19 Thanked 57 Times in 20 Posts	TennBills2 The book "Die Pistole 08" by Joachim Gortz containes hardening and tempering information on each part on pages 124 - 129. Ed

06-05-2011, 06:01 AM	#4
Vlim Moderator Lifetime LugerForum Patron Join Date: Oct 2002 Location: Europe Posts: 5,053 Thanks: 1,036 Thanked 3,987 Times in 1,205 Posts	Tenbill, surprising. That book does about 40 - 50 Euros on German ebay. Here it goes: Firing pin: Steel 25.61. Carbon content 0.25 - 0.30% 25-30 minutes in 'Durferrit' salt bath at 830 degrees celcius. Hardein in oil. Dip with the tip (until about the middle of the pin) in a salt bath at 430 - 450 degrees celcius. Boil off in hot water. Sear bar: Steel 25.61. Carbon content 0.25-0.30%. 30 minutes in 'Durferrit' salt bath at 850 degrees celcius. Cool down in oil. Harden from Durferrit in oil at 760 - 770 degrees celcius. Anneal tip and cavity to a dark red in a lead bath. Tempering for 30 minutes at 150 degrees celcius in an oil bath These are the 1942 Mauser instructions (should be the best of the lot).

06-05-2011, 08:29 AM	#5
regul Patron LugerForum Patron Join Date: Sep 2002 Location: VA Posts: 96 Thanks: 19 Thanked 57 Times in 20 Posts	Vlim I have always wondered if Durferrit was a brand or trade name for sodium nitrate blueing salts. Thank you for translating the text for TennBills2. I was hoping one of the German speaking/reading members would. Thanks Ed

06-06-2011, 11:44 AM	#7
TennBill2 RIP Join Date: Feb 2011 Posts: 101 Thanks: 0 Thanked 17 Times in 6 Posts	Thanks for the info! Bill