What is ASTM D3359 Certification Test

The cross-cut test, also known as the adhesion test, is an important test method commonly used to evaluate the surface adhesion of paints, varnishes, conversion materials, metal coatings, coatings and related products on steel plates, and is used to grade the adhesion test results.

Cross-Cut Test

Applicable to adhesive coatings with surface coating thicknesses of 0~50μm and 50μm–125μm.

Common Equipment for Cross-Cut Test

Cross-cut cutter

Cross-Cut Spacing

1mm × 1mm or 2mm × 2mm

Special Adhesive Tapes for Cross-Cut Test

3M 600 & 610, Nichiban Tape, P99 Tape

Cross-Cut Test Methods and Common Standards

• ASTM D3359-09 Standard Test Methods for Measuring Adhesion by Tape Test

• BS 3900-E6 Paints and varnishes — Methods of test — Part E6: Cross-cut test

• ISO 2409 Paints and varnishes — Cross-cut test

• DIN 53151 Testing of rubber; Determination of tear strength

Adhesion Test Evaluation Standards

• ISO Grade 0, ASTM Grade 5B: The edges of the cuts are completely smooth with no flaking at the grid edges.

• ISO Grade 1, ASTM Grade 4B: Small flakes at the intersections of the cuts; actual damage within the grid area does not exceed 5%.

• ISO Grade 2, ASTM Grade 3B: Flaking at the edges and intersections of the cuts, covering 5%–15% of the area.

• ISO Grade 3, ASTM Grade 2B: Flaking along the cut edges, large partial flaking, or even entire flaking of some grids; flaked area accounts for 15%–35%.

• ISO Grade 4, ASTM Grade 1B: Large flaking along the cut edges, complete flaking of some grids; flaked area accounts for 35%–65%.

• ISO Grade 5, ASTM Grade 0B: Exceeds the previous grade.

Why Choose Us

JJR LAB complies with the ISO/IEC 17025 management guidelines, is accredited by CNAS and qualified with CMA. We issue impartial, independent and authoritative third-party test reports that are recognized worldwide.