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Aged Hardness

Aged Hardness at Room Temperature*

Form Aging Temperature Aging Time HRBW
- °F °C h -
Sheet SHT SHT - 54
1200 649 1000 56
4000 62
8000 63
1400 760 1000 62
4000 61
8000 60
1600 871 000 61
4000 58
8000 55
Plate SHT SHT - 54
1200 649 1000 57
4000 62
8000 63
1400 760 1000 60
4000 59
8000 58
1600 871 1000 56
4000 56
8000 54
All Weld Metal** 1200 649 1000 64
4000 65
8000 63
1400 760 1000 62
4000 60
8000 60
1600 871 1000 56
4000 55
8000 54

SHT=Solution heat-treated (not aged)
*Single tests from a single heat for each form
**Gas tungsten arc welded
HRBW = Hardness Rockwell “B”, Tungsten Indentor.

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