Poldi Hardness Tester

The Poldi Hardness Tester is a highly economical and dependable hammer-type impact device designed for the quick determination of Brinell hardness and tensile strength in metallic materials. Known for its exceptional portability, easy handling, and versatile maneuverability, this tester allows operators to perform impact tests with a simple hammer blow almost anywhere—including active workshops, remote assembly sites, or testing laboratories. It stands as an ideal portable solution for checking massive or immovable components, large forgings, heavy castings, and complex structural elements that cannot be easily moved to traditional bench-top hardness testing machines.

The working principle relies on a linear impact load applied simultaneously to both the material specimen and an individually calibrated standard test bar. This force is transferred via a heavy-duty 10 mm diameter Brinell ball, which is securely fixed into a specialized holder using a spring-loaded plunger. Because the impact load hits both surfaces consistently, the resulting depths of indentation depend purely on their relative hardness. Once the impact is delivered, operators use a dedicated "Magnifiscope" measuring magnifier—featuring a 10x magnification lens, a 7 mm scale range, 0.1 mm scale graduations, and a measurement accuracy of 0.05 mm—to measure the diameters of the two indentations. The exact Brinell hardness value and tensile strength can then be effortlessly retrieved by referencing the provided comparison tables.