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HAYNES® Alloys

High-Temperature Hardness

188hardness

Temperature 188 25 6B 230® 556®
Vickers Hardness Rockwell Hardness Vickers Hardness Rockwell Hardness Vickers Hardness Rockwell Hardness Vickers Hardness Rockwell Hardness Vickers Hardness Rockwell Hardness
°F °C DPN HR C/BW DPN HR C/BW DPN HR C/BW DPN HR C/B DPN HR C/BW
72 RT 248 21.8 C 285 27.8 C 374 38.2 C 195 92.0 BW 203 93.6 BW 
800 427 170 86.3 BW 171 86.7 BW 269 25.5 C 142 77.3 BW 132 73.0 BW 
1000 538 159 83.0 BW 160 73.3 BW 247 21.8 C 139 76.0 BW 129 71.1 BW 
1200 649 147 77.2 BW 150 80.0 BW 225 97.5 BW 132 73.0 BW  118 66.5 BW 
1400 760 129 70.7 BW 134 73.7 BW 153 81.0 BW 125 70.0 BW  100 55.0 BW 
1600 871 89 - 93 - 91 - 75 - 67 -
1800 982 49 - 52 - 55 - 42 - 41* -

HRC = Hardness Rockwell “C”.
HRBW = Hardness Rockwell “B”, Tungsten Indentor.

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