1 1/2" A387 Grade 22

[JonPettit]

Hi, I am trying to find out information on how hot I need to get a piece of 1-1/2" thick A387 grade 22 steel plat before I can weld to it. How long do I need to keep it heated and how slowly do I need to let it cool down. I have found some info but it does not specify the thickness they were working on. I will be welding several pieces of mild steel angle in multiple areas to the plate.

 

[Tmoose]

Are you attaching brackets to a pressure vessel, etc?

There may be some pretty specific requirements per ASME Boiler and Pressure Vessel Code, maybe Section IX.

https://www.eng-tips.com/viewthread.cfm?qid=279217

 

[DVWE]

Standard preheat for this material is 400F. Wrap with an insulating ceramic fiber type blanket such as Kaowool for slow cooling when finished.

If you need a reference, look at ASME Section VIII, Div 1, Appendix R (Non-mandatory)

The devil is in the details; she also wears prada.

 

[JonPettit]

Thank you for the information, it is very helpful.