I have installed Hardox brand wear resistant plate (.41-.62 CEV) in dump trucks and as wear plates in construction equipment. The welding procedures I have may be specific to this brand of wear resistant steel (I don't have any info on the steel you are using).The bottom line here is to use a low hydrogen process. Very clean steel, good fit up and a well thought out welding sequence to minimize shrinkage. Preheat is recommended and is dependant on the thickness of steel. Post heat is recommended at the same temperature as the preheat with a soaking time of 30 minutes per .250" of plate, not less than one hour.

Mike Sherman
Shermans Welding