Welding 17-4 PH to A-36 Carbon steel
Welding 17-4 PH to A-36 Carbon steel
(OP)
I am not familiar with 17-4 PH bi-metallic applications. Could someone tell me what the best filler metal would be?
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Welding 17-4 PH to A-36 Carbon steel
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RE: Welding 17-4 PH to A-36 Carbon steel
Is it already aged? I hope that it is H1050 or H1100.
If so then I would weld with an austenitic filler.
I would have to look, but perhaps 310, though the safe choice is Ni82.
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P.E. Metallurgy, Plymouth Tube
RE: Welding 17-4 PH to A-36 Carbon steel
RE: Welding 17-4 PH to A-36 Carbon steel
Normally, welding in the solution-treated condition has been satisfactory; however, where high welding stresses are anticipated, it may be advantageous to weld in the overaged (H 1150) condition. Usually, preheating is not required to prevent cracking.
If welded in the solution-treated condition, the alloy can be directly aged to the desired strength level after welded. However, the optimum combination of strength, ductility and corrosion resistance is obtained by solution treating the welded part before aging. If welded in the overaged condition, the part must be solution treated and then aged.
RE: Welding 17-4 PH to A-36 Carbon steel
RE: Welding 17-4 PH to A-36 Carbon steel
RE: Welding 17-4 PH to A-36 Carbon steel
Typically for this kind of weld you would have the 17-4 in the H1050 or H1100 condition, weld with 309 or Ni 82, and then post weld stress relieve at a temp that is 25F below the aging temp (i.e. 1025 or 1075).
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P.E. Metallurgy, Plymouth Tube
RE: Welding 17-4 PH to A-36 Carbon steel