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11 cards from this deck
Capacity to resist indentation or scratching
Brinell, Vickers, and Rockwell
Depth and diameter of indentation vs applied force
Hardness: surface resistance; Brittleness: fracture under stress
Hard (resists scratches) but brittle (breaks on impact)
Resistance to indentation and scratching on surfaces
Energy absorption & plastic deformation before breaking
Withstand blows without breaking
Resist scratches and penetration
Charpy and Izod tests
Energy absorption when material faces sudden force
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