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Poldi Hardness Tester (Telebrineller)

Poldi Hardness Tester (Telebrineller)

Poldi Hardness Tester (Telebrineller)

Product catalog summary
Overview: The Poldi Impact Hardness Tester, also known as the Poldihammer, is a simple and economical device used for determining the Brinell hardness and tensile strength of various materials including engineering and tool steels, cast metals, and more. It is suitable for use in workplaces, workshops, and assembly sites.
Specifications: The device uses a quenched steel ball with a diameter of 10 mm placed between the test piece and a calibrated steel bar of known tensile strength. A single hammer stroke creates impressions on both the test piece and the calibrated bar, which are then measured to determine hardness and tensile strength.
Procedures: The diameters of the impressions are measured using a magnifier provided with the tester. For more precise measurements, a measuring microscope can be used. The Brinell hardness and tensile strength are then determined using a reference table.
Accuracy: When using a check test piece with a tensile strength of 70 kg/mm², the deviation in tensile strength converted from Brinell hardness is within ±3% for steels with strengths of 50-100 kg/mm², and within ±5% for milder steels and those with strengths of 100-150 kg/mm². For strengths of 150-200 kg/mm², inaccuracies may be slightly higher.
Limitations: The tester is applicable to all forgeable iron and steel types except austenitic steels, such as those with high nickel or manganese content, corrosion-resistant Cr-Ni steel, and non-magnetic steel.
Usage: Each calibrated steel piece can be used for approximately 40 tests.
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Catalog excerpts

Poldi Hardness Tester (Telebrineller)-1

Hartemessung Hardness testing This is the simplest and most economical device for detecting hardness according to Brinell and determining tensile strength of engineering and tool steels, dies, forgings, railway material, beams, sheets, pipes, cast steel and various parts of steel as well as determining hardness according to Brinell for cast bronze, aluminium, brass, copper, grey and chilled cast iron. Poldihammer Einfachstes und wirtschaftliches Gerat fur die Ermittlung der Brinellharte und der Zugfestigkeit von Bau- und Werkzeugstahl, Gesenken, Matrizen, Schmiedestucken, Eisenbahnmaterial, Tragern, Blechen, Rohren, StahlguB und der verschiedensten Teile aus Stahl, sowie der Brinellharte von BronzeguB, AluminiumguB, Messing, Kupfer, GrauguB und HartguB. EJBAQ GmbH • Hermann-Schlichting-Str. 14 • D-38110 Braunschweig • Telefon: +49 (0)5307 95102-0 • www.baq.de

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Poldi Hardness Tester (Telebrineller)-2

Poldi Impact Hardness Tester enables to perform the impact test with the help of a hammer at workplaces, in workshops, at assembly sites or any other places. Brinell hardness and tensile strength can be seen in tables. The test made with the POLDI hardness tester shall be performed in the following way: Directions for use: Quenched steel ball with the diameter of 10 mm shall be put between the piece tested and calibrated steel bar of a defined tensile strength (check test piece). A single strong hammer stroke shall create ball impressions into the check test piece and the piece tested at the...

 Open the catalog to page 2
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