Rockwell
Hardness Testers: VERSITRON?/b> (above
left)
The Rockwell hardness tester workhorse - designed to meet the toughest challenges:
clamp large parts, operate in poor environments, and test high volumes.
Download Versitron Product Literature
Rockwell
HardnessTesters: INDENTRON?/a>
(above center)
A high-accuracy
deadweight Rockwell tester designed for lab testing. Unique design eliminates
frictional inconsistencies. Even tests inside diameters without fixturing. Operates
in all Rockwell scales.
Download Indentron Product Literature
Rockwell
Hardness
Testers:
ME-2 SERIES
(above right)
An economical
Rockwell hardness tester that is easy to calibrate, rarely requires service
and provides good accuracy. Available in analog, basic digital, & advanced
digital.
Download ME-2 Product Literature
ROCKMATE?
Portable Rockwell Hardness Tester
(above far left)
The original
"Press-and-Read" portable testers with no clamping required. Provides
data storage, scale conversion and other important electronic features.
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ROCKMAN
Portable
Rockwell Hardness Tester
(above left center)
The only high load portable without the limitations of a C-clamp configuration.
Rockman can test in totally unique applications like no other tester can.
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Product Literature
DATAVIEW?
Data Collection Software
(above right center)
DataView is designed for uploading hardness testing data to a PC. Includes
special features like scale conversion, minimum thickness and round correction.
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ACCESSORIES
for
Rockwell Testers above right)
Newage has a complete assortment of calibrated diamonds, test
blocks including new NIST traceable hardness test blocks.
Download Product Literature
(Information on
accessories other than test blocks is available with with individual products.
Rockwell Tester Operation, Technical Information
The Rockwell test method is defined in ASTM E-18 and is the most commonly used hardness tester operation method since it is generally easier to perform and more accurate than other types of hardness testing. Rockwell testers can be used on all metals except in conditions where the test metal structure or surface conditions would introduce too much variation, where the indentations would be too large for the application or where the sample size or shape prohibits its use.
The Rockwell
tester method measures the permanent depth of indentation produced by a force
on an indenter. First, a preliminary test force (A), also called pre-load or
minor load, is applied to a sample using a diamond indenter. This is the zero
or reference position that breaks through the surface to reduce the effects
of surface finish. Then, an additional test force or major load (B) is applied
to reach the total required test force. This force is held for a predetermined
amount of time to allow for elastic recovery of the metal (C). The additional
test force is then released and the final position (D) is measured against the
preliminary position and converted to a hardness number.
Hardness Tester Impression
Diagram
Here is a complete list of scales for Rockwell
testers showing the loads and indenters.
The
Rockwell test method, Part 2