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HAYNES® Alloys

Fabrication

Heat Treatment

HAYNES® 625 alloy is normally final annealed at 1925°F (1050°C) for a time commensurate with section thickness. Annealing during fabrication can be performed at even lower temperatures, but a final subsequent anneal at 1925°F (1050°C) is usually required to produce optimum structure and properties.  Please see Haynes International publication H-3159 for further information.

 Effect of Cold Reduction Upon Room-Temperature Properties

Cold Reduction Subsequent Anneal Temperature 0.2% Yield Strength Ultimate Tensile Strength Elongation Hardness
% - ksi MPa ksi MPa % HR B/C
None None 70 480 133 915 46 97 HRB
10 None 113 780 151 1040 30 32 HRC
20 140 965 169 1165 16 37 HRC
30 162 1115 191 1315 11 40 HRC
40 178 1230 209 1440 8 42 HRC
50 184 1270 223 1540 5 45 HRC
10 1850°F (1010°C) 63 435 134 925 46 -
20 71 490 138 950 44 -
30 78 535 141 970 44 -
40 82 565 141 970 42 -
50 82 560 141 975 42 -
10 1950°F (1065°C) 61 425 133 915 46 -
20 71 485 137 950 45 -
30 77 530 140 965 44 -
40 83 575 142 975 42 -
50 82 570 141 975 42 -
10 2050°F (1120°C) 58 405 128 880 50 -
20 67 460 135 930 46 -
30 58 400 127 875 52 -
40 72 500 137 945 44 -
50 61 420 130 900 50 -
10 2150°F (1175°C) 52 360 122 840 55 -
20 54 370 124 850 55 -
30 53 365 122 840 56 -
40 52 360 122 840 55 -
50 51 350 119 825 58 -

*Tensile results are averages of two or more tests.
*Rapid Air Cool
HRB = Hardness Rockwell “B”.
HRC = Hardness Rockwell “C”.

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