Abrasion-resistant steel, tseem hu ua hnav-resistant steel, tau nce hardness thiab toughness piv rau cov pa high-strength steel, ntev mus txog 4 zaug ntev dua - qhov twg hardness yog lub peev xwm los tiv thaiv los yog khawb thiab toughness yog resilience tiv thaiv fracturing.
