Rockwell scale
id:
rockwell-scale-215-2990813
title:
Rockwell scale
text:
The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test measures the depth of penetration of an indenter under a large load compared to the penetration made by a preload. There are different scales, denoted by a single letter, that use different loads or indenters. The result is a dimensionless number noted as HRA, HRB, HRC, etc., where the last letter is the respective Rockwell scale. Larger numbers correspond to harder materials. When testing metal
brand slug:
wiki
category slug:
encyclopedia
description:
Hardness scale
original url:
https://en.wikipedia.org/wiki/Rockwell_scale
date created:
2003-05-28T22:54:31Z
date modified:
2024-09-12T18:10:45Z
main entity:
{"identifier":"Q502723","url":"https://www.wikidata.org/entity/Q502723"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/b/bf/Rockwell_hardness_tester_001.jpg","width":3000,"height":4000}
fields total:
13
integrity:
16