Correct temper-sear & firing pin?

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

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06-05-2011, 06:01 AM	#1
Vlim Moderator Lifetime LugerForum Patron Join Date: Oct 2002 Location: Europe Posts: 5,053 Thanks: 1,036 Thanked 3,991 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	#2
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