gas nitriding actions

A

alinwa

oft dis'd member
OK, since the salt bath nitriding thread seems to be completely derailed by some slather-it-on ceramic hocus-pocus.............. can anyone tell me if the "new" gas nitriding system has been used to blacken a SS bolt action? It seems to me that the 900F is safe for BAT action.

BLACK and SHINY


??


al
 
all the gas nitriding I've ever done comes out a frosty silver color. The older liquid nitride processes came out black with carbon steel. I never saw anybody ever try stainless in a nitride process, so can't say much there. There is a process to blacken stainless steel thru a chemical process, but not sure just what it was now. Savage did barrels about 25 years ago with the process (the old 112BT)
gary
 
squeakie,
My 416R stainless barrels come out a nice deep black. Since I polish my barrels, they look like a Weatherby polished deep blue. Bear in mind this is a Melonite QPQ process that Joel Kendrick did for me.
Butch
 
According to there website the Bat actions are 17-4PH stainless are around 38 RC which is condition H1025, so if the process is done at 900 degrees it will change the heat treat to condition H900 which is 44 RC. If the action was 416 then 900 degrees would be completely safe.

Gary
 
Al, are you most interested in nitriding itself, or the "blackening" effect? If the latter, perhaps Dave Tooley could help -- he's long had a fondness for building hunting rifles (and BAT actions). He's also a good friend of Joel Kendrick's . . .
 
Al, if an action is made from 17-4 Stainless, the transformation temperature range is pretty criticle, as well as the time it is held at that temperature.. For instance, you get quite a bit of difference in RC hardness and properties when age hardenning from 1150 to 900. 1150 is about 32 RC very machinable, tough as all get out. 900 is 40+ rc hardness, is a bear to machine, and ductility starts to fall.

If they are using 17-4 I suspect it is 1050. I really do not know if, after age hardnenning at 1050 for four hours to achieve those properties will be compromised if the part is then heated to 900 for what ever length of time is required in this proccess.

416 is a martensitic Stainless, in other words, once brought to a certain property, as long as you do not approach the transformation range, it will not affect the properties.

But that being said, 900 degrees is pretty damned hot.
 
alinwa said:
OK, since the salt bath nitriding thread seems to be completely derailed by some slather-it-on ceramic hocus-pocus.............. can anyone tell me if the "new" gas nitriding system has been used to blacken a SS bolt action? It seems to me that the 900F is safe for BAT action.

BLACK and SHINY


??


al
Click to expand...

When elmerdeer made the post, I thought they were talking about the bore of the barrel. I am sorry for misreading that if it wasn't the intention of the post. I was just suggesting a product that truly works for the bore of the barrel. Ceramic solutions are not hocus-pocus.

Thanks,

Jason
 
I have a question about the process. I saw a barrel one time when a shooter left a patch about and inch from end of barrel and round being fired created a swell in barrel. If this was to happen with a barrel that had the process done would the same thing happen or would the end of barrel shatter?

Ron
 
ncnbrsa said:
I have a question about the process. I saw a barrel one time when a shooter left a patch about and inch from end of barrel and round being fired created a swell in barrel. If this was to happen with a barrel that had the process done would the same thing happen or would the end of barrel shatter?

Ron
Click to expand...

the same thing would happen
 
Charles E said:
Al, are you most interested in nitriding itself, or the "blackening" effect? If the latter, perhaps Dave Tooley could help -- he's long had a fondness for building hunting rifles (and BAT actions). He's also a good friend of Joel Kendrick's . . .
Click to expand...

Charles,

The blackening effect.

IF the nitriding offers a side benefit in barrel life then cool deal......but I've got a situation where I'm willing to pay for having a BAT blackened. Well.

al
 
Butch Lambert said:
squeakie,
My 416R stainless barrels come out a nice deep black. Since I polish my barrels, they look like a Weatherby polished deep blue. Bear in mind this is a Melonite QPQ process that Joel Kendrick did for me.
Butch
Click to expand...

maybe that's the process that Savage used. They were flat black in color (have not seen one in fifteen years). When I used to have crankshafts nitrided years ago they came out jet black, but they also were 4350.

does the Melonite process help with barel life all that much? Also how easy are they to clean? This process really sounds like I should be interested in it
gary
 
Gary,
I have mentioned before several times on the forum. I had Joel do a Kreiger for me. I usually get approx 1000 rounds of accuracy on a PPC barrel. It had 5000 rounds and looked great with the borescope. I wish I knew what happened to it.
I will be sending 2 more to him soon. I had them done for longevity and the black finished was secondary to me.
Butch
 
Al
I had a pre 64 Winchester in Swift that was stainless and had a Black barrell, dont know what the process was but someone knows perhaps an old Winchester Employee.

Clarence
 
Would this work ?

Get a couple of pieces of that action material from Bat .

Send them to be tested first
and then send the samples to Joel for Melonite QPQ process.

Test again.


You would have more information than you do now.





Glenn:)
 
Gary,
Joel is doing 17-4 receivers. He doesn't do Howa, Weatherby, Stiller stainless, and takes the others case by case.
Butch
 
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