topic 9163

ASTM D3359 Standard Test Method for Measuring Adhesion by Tape Test

(2001)

What is the spacing of the cuts required for this ASTM Adhesion Tape Test?

Thanks,

Sonia Lai
- Bloomfield, Connecticut, USA

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First of two simultaneous responses -- (2001)

Sonia,

I believe you are referring to Method B within ASTM D3359 [link by ed. to spec at TechStreet] . If so, the spacing between the cuts varies with the dry film thickness of the coating. For coatings with dry film thickness of up to and including 2 mils, the spacing is 1 mm apart, with eleven cuts total (unless there is another agreement). For coatings between 2-5 mils, the spacing is 2 mm and six cuts. For thicker coatings, Method A is recommended (an "X" cut procedure).

Roy Nuss
Trevose, Pennsylvania, USA

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Second of two simultaneous responses -- (2001)

Hello Sonia!

>From Paragraph 12.2.1- "For coatings having a dry film thickness up to and including 2.0 mils (50 microns) space the cuts 1 mm apart and make eleven cuts unless otherwise agreed upon."

>From Paragraph 12.2.2- "For coatings having a dry film thickness between 2.0 mils (50 microns) and 5.0 mils (125 microns) space the cuts 2 mm apart and make six cuts. For films thicker than 5.0 mils use Test Method A (X-Cut Tape Test)."

Good luck!

Lee Gearhart
metallurgist

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(2006)

AFTER FOLLOWING THE PROCEDURES FROM ASTM D3359 B, WHAT TYPE OF TAPE DO I NEED TO USE AND HOW MANY RUBS DO I HAVE TO TAKE AND AT WHAT ANGLE DO I NEED TO PULL THE TAPE?

CESAR H. MARISCAL
INSPECTION COMPANY - Shanghai, China

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