What is Cross-Cut Testing?

The cross-cut test involves assessing the adhesion of coatings and paints on substrates using the cross-cut method according to ISO 2409. A defined cut pattern is scribed into the coating, and the detachment is visually evaluated.

Test Method

Using a multi-blade cutting tool, two perpendicular cut patterns are scribed into the coating. The cutting distance depends on the layer thickness (1–3 mm). After cutting, an adhesive tape is applied and then removed.

Evaluation (Gt 0–5):
• Gt 0: Smooth cut edges, no detachment
• Gt 1: Small flaking at intersections (<5 %)
• Gt 2: Detachment at edges (5–15 %)
• Gt 3–5: Increasingly severe detachment

Cross-Cut Testing According to OEM Standards

The following table shows all OEM-specific standards for cross-cut testing covered by the ASO Laboratory:

Manufacturer	Standard	Description
BMW Group	AA-0180	Cross-Cut Test
BMW Group	PA-P 028	Cross-Cut Test
General Motors Europe	GME 60401	Cross-Cut Test
General Motors Worldwide	GMW 14829	Cross-Cut Test
Publisher	50461	Cross-Cut Test
Stellantis/Opel	KEUR 00824-401	Cross-Cut Test
Volvo Car Corporation	VCS 1029,54729	Cross-Cut Test

Frequently Asked Questions about Cross-Cut Testing

What does the cross-cut test evaluate?

The adhesion of a coating to the substrate. The evaluation is based on a scale from Gt 0 (perfect adhesion) to Gt 5 (over 65% detachment). Most automotive manufacturers require Gt 0 or Gt 1.

Which cutting distance is used?

The distance depends on the layer thickness: 1 mm for layers up to 60 µm, 2 mm for 61–120 µm, 3 mm for over 120 µm. Six parallel cuts are made in each direction.

Can the test also be performed on components?

Yes, the cross-cut test can be performed on flat component surfaces, provided there is a sufficiently large flat area (approx. 20 × 20 mm). Evaluation is limited on curved surfaces.

Your Cross-Cut Test at the ASO Laboratory

The ASO Laboratory performs cross-cut testing according to all common OEM standards. Our DAkkS accreditation according to DIN EN ISO/IEC 17025 guarantees standards-compliant results.

Contact us for a quote – we will advise you on optimal sample planning and testing scope.