Ce este otelul? Cum se produce si la ce se utilizeaza?

Otelul este un aliaj format din fier cu un mic procentaj de carbon, pentru a-si imbunatati rezistenta la rupere in comparatie cu alte forme de fier. Multe alte elemente pot fi prezente sau adaugate. Otelurile inoxidabile care sunt rezistente la coroziune si oxidare, au nevoie de obicei de un plus de 11% crom. Datorita rezistentei...

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Calirea implica incalzirea otelului, Cand fierul este topit din minereul, fierul pur, Proprietatile materialelor - Origini si productie, Reciclare, Tratament termic

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