For maximum strength alloy 617 (ERNiCrCoMo-1) bare wire or 117 (ENiCrCoMo-1) covered electrodes are suggested.
Incoloy 800H Pipe Fittings (UNS N08810) is in fact an iron-nickel-chromium alloy having the same basic composition as Incoloy 800, with significantly higher creep rupture strength.
