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Mandrel Bend Testing
 | A coated metal sheet is bent over a conical or cylindrical mandrel and cracks, color change, adhesion etc. of the coating are evaluated. Corresponding results, produced by decreasing mandrel sizes, indicate the degree of elasticity of the coating. A conical mandrel allows the user to undertake fewer tests to achieve a similar result to cylindrical mandrels. |
The 1510 Bend Tester is a mechanical tester used to determine the effects of bending on the elasticity, adhesion and elongation properties of cured coatings on sheet metal. The frame has a bending lever with a roller which pivots on a steel conical mandrel with a diameter from 3.2 - 38.1mm (0.12 - 1.5"). A graduation indicates the mandrel diameter in both mm and inches. The specimen can be bent on part of, or along, the entire length of the mandrel, and the results corresponding to different test diameters can be observed in a single operation. This is ideal for use in conjunction with the cylindrical mandrel, as it identifies the stop point for more focused testing. As the instrument is machined out of a solid block of steel, the particularly robust and rigid construction provides excellent resistance to wear and provides long service life. A large, sturdy anodized base, which can be permanently fixed to a workstation, ensures stability during testing.
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The Elcometer 1506 Cylindrical Mandrel Bend Tester delivers industry-leading precision for coating flexibility, adhesion, and elongation assessments on sheet metal. Engineered with a heavy-duty metal frame, height-adjustable rollers, and a sliding vice, this mandrel bend tester wraps each coated panel uniformly around every mandrel diameter—revealing micro-cracks and adhesion failures at the exact bend radius. With repeatable, lab-grade results and a compact footprint, the Elcometer 1506-B is ideal for coating labs, automotive finish lines, aerospace validation, and marine coating inspections. Explore compatible mandrel sets, spare parts, and related testing accessories to customize your testing station—and ensure every coating you certify meets the highest standards for flexibility and adhesion.
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The Elcometer 1500 is a simple instrument for determining the elasticity, adhesion and cracking of dry paint on flat specimens, consisting of a mandrel support which also serves as a test stand. Coated metal sheets, maximum 150mm (5.9") in length x 100mm (3.93") wide, are manually and successively bent around mandrels of decreasing diameter until cracks appear.
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