Model 463-Pro

The Scratch Stylus acc. to Sikkens, Model 463-Pro is used to produce defined damages (scribes) on coated test panels to be used in corrosion tests, as, for instance, the Fog Spray Test acc. to DIN EN ISO 9227 with the ERICHSEN Corrosion Testing Apparatus, Models 606 and 608. This method provides a criterion for the evaluation of the extent or influence of corrosion underneath a coating and its effect on the adhesion. The length of the lateral damage underneath the coating serves as a measure of the corrosion protection factor.

Design and Function

The Scratch Stylus acc. to Sikkens, Model 463-Pro, consists of a carbide cutting edge guided by a supporting knob and a grip. In the standard version of Model 463 / 463-Pro the Sikkens cutting edge has a width of 1.0 mm and rectangular edges. It is adjustable in the horizontal direction by raising or lowering the cutting edge, using the locking screws.

Upon request, Sikkens cutting edges of 0.5 mm and 2.0 mm can also be supplied; the cutting edges can be used on both sides.

Execution of the Test

The test panels are prepared with one or several straight scratch tracks over the whole of the metal sheet width in such a manner that they lie parallel to the narrow edge of the sheet and penetrate to the substrate. In some cases a St. Andrew's Cross scratch track may be necessary.

Scope of delivery

• Scratch Stylus acc. to Sikkens, Model 463-Pro
• Sikkens cutting edge 1.0 mm