RT Journal Article SR Electronic A1 Sigmund, Marian T1 Heterogenous Weld Heat Resistant Steel With Cobalt Alloy JF Manufacturing Technology Journal YR 2021 VO 21 IS 5 SP 700 OP 705 DO 10.21062/mft.2021.069 UL https://journalmt.com/artkey/mft-202105-0004.php AB The article describes problems of welding heterogeneous welds be specific of heat resistant steel X15CrNiSi20-25 with cobalt alloy Stellite 6. Heterogeneous welds are produced by GTAW (141 according to standard EN ISO 4063) welding method. The major goals of the experiment were performing preliminary welding specifications (pWPS) for a specific welded part. Further was necessary for this weldment set parameters on mechanical testing.