Resistance to indentation, scratching, abrasion, or cutting. Materials with little resistance are called soft; those with high resistance are called hard. Hardness in steel is measured by scientific instruments.
From the Web: Steel making, fabricating have changed; mfg & politics; 3-D printing semi-solid metals - by Vicki Bell Highlights for fabricators from the past week’s Web articles— AISC VP sets the record straight about today’s steel production; what skills today’s factory workers need; manufacturing and politics, and developments in 3-D printing.
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