Metallide testimisel sissesurumiskõvaduskatse abil korreleerub süvendi kõvadus ligikaudu lineaarselt tõmbetugevusega, kuid põhiliselt korreleerub siiski iga süvendi geomeetria tugevus- ja kõvadusvahemikega, ning see võimaldab majanduslikult oluliselt mittepurustavalt testida metallist osiseid kergete kaasaskantavate seadmetega, nt käeshoitavate Rockwelli kõvadusmõõturitega.
When testing metals by the aid of indentation hardness test, indentation hardness correlates roughly linearly with tensile strength, but it is an imperfect correlation often limited to small ranges of strength and hardness for each indentation geometry, and this relation permits economically important nondestructive testing of bulk metal deliveries with lightweight, even portable equipment, such as hand-held Rockwell hardness testers.
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