Repair welding of final machined ASTM A 743 CB 30
Repair welding of final machined ASTM A 743 CB 30
(OP)
Hello.
Has anyone experience with weld repairs on martensitic stainless steel castings ASTM A 743 CB 30 (Or material grade GX22CrNi17+QT = 1.4059 in EN Terms)?
As the parts are final machined now, we are looking for procedures WITHOUT PWHT.
So far we are used to simply scrap the parts when we find defects after machining - not very economically and time consuming.
Has anyone experience with weld repairs on martensitic stainless steel castings ASTM A 743 CB 30 (Or material grade GX22CrNi17+QT = 1.4059 in EN Terms)?
As the parts are final machined now, we are looking for procedures WITHOUT PWHT.
So far we are used to simply scrap the parts when we find defects after machining - not very economically and time consuming.





RE: Repair welding of final machined ASTM A 743 CB 30
What type of weld repairs area and depth) are you considering? With elevated preheat and proper selection of filler metal (309ss), you may be able to qualify a repair welding procedure.
RE: Repair welding of final machined ASTM A 743 CB 30
["b]8.3.2 Post weld heat treatment is not required on the other grades of this specification. When post weld heat treatment is believed necessary for adequate corrosion resistance in the service environment, castings should be ordered in accordance with Specification A 744/A 744M.[/b]"
Scrapping of the parts is the best option. Attempt to salvage, may cause distortion, reduce corrosion resistance or spoil the aesthetics, by discolouration. It all depends on the ground realities, based on the urgency .
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