The Janka test is not widely accepted in Europe, because there is a considerable possibility of failure owing to cell wall compression, and because of the more reliable results of the
Brinell test compared with those of the Janka test (Schwab 1990, Niemz and Sttibi 2000, Hirata et al.
For the measuring of the hardness the
Brinell test was used.
The
Brinell test measures resistance to indentation and is a common technique used to determine the hardness of castings.
There have been many studies that deal with indentation tests using different indenter geometries, such as a spherical indenter (
Brinell test), a conical indenter (Cone hardness, HG, O'Neill (2)) and a diamond pyramid indenter (Vickers test, or HV).
There are several types of hardness tests, including the
Brinell test, the Rockwell test, the Vickers test and the durometer test.
Although the
Brinell test is widely known as one of the most accurate test methods for hardness testing of metals, error in the reading of the indentation size results in measurement errors of 0.1 mm between operators -- the range is even greater between labs.
Parts are loaded into the cell, and a carousel moves them to the
Brinell test and onto the PCRT test station, which uses a single electronics package to alternately test left and right knuckles.
Hochstein describes the
Brinell test as "...one of the few working tools we have, but it's certainly only part of the equation when determining machinability." Hachtman calls the
Brinell test "inconsistent at best" as a reading for machinability.
The standard
Brinell test uses a 10mm ball under three different load levels: 500kg, 1500kg and 3000kg.
The most common method of measuring hardness in the foundry is the
Brinell test, which is particularly effective on soft materials.