hard material
Tough, unyielding stuff
Hard material refers to any substance that resists deformation, cutting, or penetration—the opposite of soft material.
The term appears in manufacturing, construction, and materials science to categorize substances like metals, ceramics, stone, and hardwoods: This drill bit is designed for hard materials like concrete and tile.
What counts as hard depends on context; wood is hard compared to fabric but soft compared to steel.
- stoneSolid earth fragment
- solid rockContinuous, hard stone
- steelCarbon-hardened iron alloy
- cold steelEdged weapons collectively
- rockSolid earthen material
diamond · raw diamond · concrete · reinforced concrete · rigid · solid · tough · dense · unyielding · granite · iron · cast iron · metal · carbon fiber · brick · brick wall · ceramic · bone