Nitralloy
Nitralloy
(OP)
Preheat for nitralloy 135. Any reference to what it should be? Some say 60F some say 600F any actual code would be helpful.
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: Nitralloy
Nitralloy 135 is a Cr-Mo alloy steel with moderate hardenability and contains a carbon content of 0.4%, so extreme care must be exercised to avoid hydrogen cracking in the weld heat affected zone. Low hydrogen electrodes are required.
Your preheat requirement for this alloy will be close to 600 deg F using the IIW formula
FAQ330-1077
RE: Nitralloy
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: Nitralloy
RE: Nitralloy
RE: Nitralloy
What exactly are you doing? You have a low alloy, moderate hardenability steel that can be surface hardened by induction or nitriding, and you want Stellite deposited on the surface??? If you need Stellite hardfacing, I would select a more suitable alloy that has better weldability.
RE: Nitralloy
RE: Nitralloy
You missed my point above, and did not answer my questions. I would not suggest using Nitralloy with Stellite hardfacing. Instead for the welder qualification, use 3/8" thick, P-No 1 steel as a base metal for the Stellite hardfacing.
RE: Nitralloy
RE: Nitralloy
What does the welding procedure say about PWHT?
Do you have a qualified procedure now?