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Conical Mandrel Tester

Article No. 5751

Conical Mandrel Tester
Bend Tester for definition of smallest bend diameter

  • Aluminum panels up to 20.3 cm (8 inches) wide and 1.6 mm (.063 inches) thickness can be tested
  • Steel panels up to 20.3 cm (8 inches) wide and 0.8 mm (.031 inches) thickness can be tested
  • Durable sturdy stainless steel mandrel
  • Built-in ruler to measure the failure point
  • Compliant with ASTM D522 Method A
$1,072.00 excl. taxes & shipping cost


The conical mandrel bender is a popular design to test coating flexibility.

  • Precision cut conical mandrel for accurate results
  • Built-in ruler for convenient measurement
  • Special sample holder plate design to prevent panel slippage
  • Economically price
  • Compliant with ASTM and ISO methods
  • Durable design for long term use

Technical Attributes


  • Weight
    4.1 kg
  • Weight
    9 lb
  • Dimensions: L x W x H
    51 x 15 x 18 cm
  • Dimensions: L x W x H
    20 x 6 x 7 in







  • Carefully cover test panel with paper between mandrel and draw bar, and clamp the panel
  • Fold the test panel around the cone by using the manually operated arm that is pivoted at the ends of the axis of the cone
  • Bend uniformly at 180 degrees within 15 seconds
  • Remove panel and examine the coating for cracks
  • Mark the point at which the cracking stops and measure the distance from the farthest end of the crack to the small end of the mandrel
  • Appropriate calibration curves also permit determination of the elongation values of the paint film
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