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1 Rockwell hardness testing machine
twardościomierz RockwellaEnglish-Polish dictionary for engineers > Rockwell hardness testing machine
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Rockwell scale — The Rockwell scale is a hardness scale based on the indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a… … Wikipedia
Rockwell hardness — (RH ) a measure of the hardness of a metal introduced by Rockwell in 1922. In a Rockwell hardness test, a penetrator makes an indentation in the metal under two constant loads, a minor load (generally 10 kilograms) and then a major load. The… … Dictionary of units of measurement
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