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Average Room Temperature Hardness

Form Condition Aging HRB
Sheet Heat-treated at 2150°F
(1177°C),
RAC
°F h -
- - 96
1500 4 92
1500 8 97
1500 16 96
1500 32 97
1500 64 99
1500 128 96

HRB = Hardness Rockwell “B".

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