Highly accurate in determining Brinell hardness values of materials which are used to evaluate its resistance to deformation, scratching, indentation, or penetration
The QualiBrinell QS models are equipped with a built-in Brinell indentation measurement system. The fully automatic image analysis software can be installed on most modern desktop or laptop PCs and offers the following features:
As explained in ASTM E10-18:
“The Brinell hardness test is an indentation hardness test that can provide useful information about metallic materials. This information may correlate to tensile strength, wear resistance, ductility, or other physical characteristics of metallic materials, and may be useful in quality control and selection of materials. Brinell hardness tests are considered satisfactory for acceptance testing of commercial shipments and have been used extensively in industry for this purpose.”
An indenter of known diameter is pressed into a material with a known force load, typically measured in kilogram-force (kgf). The diameter of the indentation after the load is measured, and these values are input into the following formula:
where BHN is the Brinell hardness number, P is the force load in kgf, D is the ball indenter diameter in mm, and d is the indentation diameter in mm. For a given force and indenter size, a larger indentation indicates a softer material, and results in a lower BHN.
Available Test Loads |
kgf |
62.5, 100, 125, 187.5, 250, 500, 750, 1000, 1500, 3000 |
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N |
612.9, 980, 1226, 1839, 2452, 4900, 7355, 9800, 14700, 29400 |
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Load Dwell Duration |
2 s – 99 s, can be set by LCD screen and stored |
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Tungsten Carbide Indenter |
Ø10 mm included standard, Ø5 mm and Ø2.5 mm sizes ordered separately |
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Standard Reference Blocks |
125-350 HBW 10/3000, 125-350 HBW 10/1000, others available by request |
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Measuring Range |
3.18 HBW – 658 HBW |
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Indentation Measurement Accuracy (QualiScope option) |
± 0.5% |
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Accuracy of Brinell Hardness Value |
Hardness Range |
Error (%) |
Repeatability (%) |
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HBW ≤ 125 |
± 2.5 |
≤ 3.0 |
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125 < HBW ≤ 225 |
± 2.0 |
≤ 2.5 |
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HBW > 225 |
± 1.5 |
≤ 2.0 |
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Maximum Sample Height |
220 mm |
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Maximum Sample Depth |
140 mm |
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Power Supply |
110/220 VAC, 50/60 Hz, 4 A |
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Dimensions (H x W x D) |
750 mm x 260 mm x 530 mm (30” x 11” x 21”) |
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Weight |
120 kg (265 lbs) |
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