Resistance to Temperature Change


ASTM D1211

 cracking

Scope and Field of Application

ASTM D1211 is a method of determining the resistance to cracking of clear nitrocellulose lacquer films applied to wood or plywood substrates and subjected to sudden changes from high to low temperature.

We can test to this standard or we can use it as a basis for tests involving different coatings and substrates.

If you are concerned with the resistance of liquid coatings to changes in temperature then please refer to our Freeze-Thaw Exposure page.

There are no pass/fail criteria defined in the standard. This is a matter of agreement between the parties concerned.

The actual standard is a copyright-protected document and we are not able to provide you with copies. If required however, you can easily obtain a copy from the American Society for Testing and Materials.

 

Summary of Method

Coated test panels are placed in an oven at about 50° C for 1 hour and then transferred to a refrigerator and stored for 1 hour at about minus 20° C. The panels are then left at room temperature for 15 minutes before being assessed for cracking. The whole process is then repeated for an agreed number of cycles or until a defined density and size of cracks is observed.

 

Sample Requirements

The panels defined in the standard are 300 x 150 x 8 mm cut from plywood. We can test panels of this size (or smaller) cut from any substrate. At least 3 panels are required for each coating.

If you wish, we can prepare the test panels. The quantity of liquid paint we needs depends on the method of application. We will be pleased to advise you regarding our requirements.

 

Accreditation

Although PRA is accredited to ISO 17025 by the United Kingdom Accreditation Service (UKAS), we are not accredited to carry out this particular test.

 

Please contact Peter Collins for further details.

 

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