HAYNES® 188 alloy is normally solution heat treated in the range of 2125-2175°F for a time to commensurate with section thickness. Annealing during fabrication can be performed at even lower temperatures, but a final, subsequent solution heat treatment is needed to produce optimum properties and structure.
*Based upon rolling reduction taken upon 0.125 in. (3.2 mm) thick sheet. Duplicate tests.
HRB = Hardness Rockwell “B”
HRC = Hardness Rockwell “C”