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TQC Basic Conical Mandrel Bend Test

Article No. 12080

TQC B3000 Conical Mandrel Bend Test

The TQC Conical Bend Test is a laboratory apparatus to bend coated test panels over a conical shaped mandrel in order to assess the elasticity or resistance of a coating, paint or varnish to cracking, elongation and/or detachment from a metal test panel in accordance with ISO 6860 and ASTM D522. The sample panel is secured by means of two clamping knobs which has to be tightened and untightened by turning respectively clockwise or anti-clockwise.

$948.00 excl. taxes & shipping cost


  • The conical shape of the bending area allows the deformation of the test panel and examination of the elasticity range of a coating over any diameter between 3.1 and 38 mm in one single test.

  • Sturdy apparatus made of a combination of anodized aluminum and stainless steel.

  • Large Knob on bending arm for easy and smooth bending

  • Special Care: Though robust in design, this instrument is precision-machined. Always clean the instrument after use with a soft dry cloth. Do not use compressed air to clean the instrument.

Technical Attributes

  • Data
    Mandrel Range:3.1 to 38 mm dia.
    Test Panel Size:100 x 180 mm
    Max. Panel Thickness:0.8 mm
    Apparatus Dimensions:110 x 270 x 100 mm
    Weight:3300 grams


DIN EN ISO 6860, ASTM D522


  1. Position the apparatus such that the fixation nuts are facing forwards.
  2. Loosen the nuts and move the bending-handle in the front direction so it is positioned at the same side as the fixation nuts are.
  3. Position the test panel with the coating facing towards (direction of operator) between the conical mandrel and the steel bending bar in such a way that the panel can be secured in place with the nuts.
  4. Now slowly move the bending-handle to the other side of the apparatus thus bending the test panel over the conical mandrel.
  5. Visually observe the test panel and check for cracks. If any cracks have occurred note the diameter of the beginning and end of the crack.
  6. Loosen friction nuts and remove test panel.
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