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Hardness and Grain Size

Room Temperature Hardness of Material Solution Annealed at 2150°F

Form Hardness, HRBW Typical ASTM Grain Size
Sheet 86 3 - 5
Plate 87 3.5 - 6
Bar 88 2 - 5
HRBW = Hardness Rockwell “B”, Tungsten Indentor.
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