Mandrel Bending Test

Mandrel Bending Test

Bending coated sheet metal over a defined radius is an indicator of the elongation and adhesion of a paint film at bending stress. BYK-Gardner offers two types of mandrel bending testers:

a cylindrical mandrel and
a conical mandrel.

Cylindrical Mandrel Tester

This mandrel is used for simple and quick testing of the flexibility of a coating by bending a coated panel over a rod of known diameter and then examining the coating for cracking, flaking or other damage.

Made of anodized aluminum
12 mandrels of stainless steel
Panels up to 65 mm (2.56 in) width can be tested
Rod diameter sizes: 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 25, 32 mm

Standards:

ASTM	D 522
DTMS 141a	Method 2012	Method 6051	Method 6221	Method 6223
ISO	1519

Conical Mandrel Tester

The varying mandrel diameter (3.2 mm - 38.1 mm, 1/8 to 1.5 inches) stretches a coating through a gradient of distension, allowing precise determination of adhesion characteristics.

Stable construction made of anodized aluminum
With conical stainless steel mandrel
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

Normen

ASTM	D 522	D 1737
ISO	6860

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