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O que (quem) é Rockwell hardness - definição
ROCKWELL HARDNESS SCALE BASED ON INDENTATION HARDNESS OF A MATERIAL WITH A 120° DIAMOND SPHEROCONICAL UNDER 150 KGF
Rockwell hardness test; Rockwell Hardness Scale; Rockwell hardness scale; Rockwell+scale; Rockwell hardness; Rockwell Constant Hardness Rating; Rockwell test
Rockwell scale
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 (major load) compared to the penetration made by a preload (minor load).
Dick Rockwell
![Secret Six]]; cover art by Rockwell.<!--confirmed: both penciled and inked-->](https://commons.wikimedia.org/wiki/Special:FilePath/Action629.jpg?width=200 "Secret Six]]; cover art by Rockwell.<!--confirmed: both penciled and inked-->")
ARTIST (1920-2006)
Dick rockwell; Richard Rockwell
Richard Waring Rockwell (December 11, 1920 – April 18, 2006)Dick Rockwell at the Lambiek Comiclopedia was an American comic strip and comic book artist best known as Milt Caniff's uncredited art assistant for 35 years on the adventure strip Steve Canyon. Rockwell was a nephew of the famed painter and illustrator Norman Rockwell.
Brinell scale
BRINELL SCALE OF HARDNESS
Brinell Hardness Scale; Brinell hardness scale; Brinell hardness test; BHN; Brinell hardness; Brinell number; Brinell
The Brinell scale characterizes the indentation hardness of materials through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several definitions of hardness in materials science.
Wikipédia
Rockwell scale
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 (major load) compared to the penetration made by a preload (minor load). 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. Higher numbers correspond to harder materials.
When testing metals, indentation hardness correlates linearly with tensile strength.
