P number
P number
(OP)
Does ASTM A355 Gr. A have a P number? It's not listed in ASME section IX.
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RE: P number
RE: P number
RE: P number
1. Calculate the carbon equivalent (CE)
2. Follow this FAQ FAQ330-1077 for preheat selection
3. For PWHT, you need to determine the original heat treatment condition of this material. If it was tempered, the PWHT temperature should remain 50 deg F below the original fabrication heat treatment tempering temperature.
RE: P number
RE: P number
(AISI 7140).
AISI 7140 in addition to the 0.40 C; has 1.6 Cr; 1.15 Al
With the Al welding could get a little tricky.
I don't have any welding parameters on either materials only heat treating specifications for AISI 7140.
RE: P number
RE: P number
What exactly are you trying to do with welding this material? Unclesyd peaked my interest and I looked up this ASTM Specification. The Grade A is an alloy steel for nitriding. The bars shall be supplied in quenched and tempered condition (min of 1112 deg F) to produce a spheroidized structure.
RE: P number
RE: P number
As a side note, why are you even using this grade of alloy steel as a substrate material for Stellite 6? The current alloy grade was developed for nitriding capabilities not necessarily for hardfacing with Stellite.
RE: P number
RE: P number
If if your thickness will permit you may have to put a bond coat on the shaft. I would get in touch with Deloro Stellite and See if Nickel Aluminide might work in your case.
Another possibility is using a laser applied coating for the Stellite 6.
Another possibility is the use of a Stellite sleeve if thickness permits.
RE: P number