Welding 15-5? 1

[Jon22]

What is the proper procedure for welding 15 - 5 alloy castings. Process is GTAW
A. Preheat?
B. innerpass temp?
C. ????

 

[israelkk]

In the aerospace business welding must be performed by a qualified welder for aerospace products which has to take examination periodically to be able to permitted to weld aerospace products. Usually every aerospace company has its own procedures for qualifying and approving welders. The welder should be familiar with the base material and filler materials metallurgy and have all the information needed, otherwise he is probably not qualified by an aerospace company/industry.

You should consult a qualified welder for the surface and weld area preparations and dimensions. As the appropriate welding method for your product and its use purpose.

One of the best sources will be the ASM metal handbook series.

 

[unclesyd]

Look at the Bulletins for both 15/5 and 17/4 for general notes about welding 15/5.

http://www.aksteel.com/markets_products/stainless_precipitation.asp

If you can comeback with more information about you proposed welding requirements and the thermal history of you casting it will help in getting more information.

 

[Jon22]

The welders are qualified, its the procedure I am double checking. The web site from unclesyd seems to concur.