GENERAL INFORMATION
With certain KYDEX® sheet colours, particularly darker colours, a phenomenon known as stress whitening can occur when the material is stressed such as by cold bending or punching.
This stress whitening appears as a white “line” along the edge of the bend or curve. To remove stress whitening, two possible remedies are listed below.
- 1. Try to heat the area with a heat gun, or a blow dryer. Quickly move the heat gun or blow dryer along the line of the stress whitening. Do not allow the heat gun or blow dryer to linger on a certain spot – this can overheat the material and cause warpage in your part. Heating the area relieves the stress in the material, and allows it to go back to its original colour.
- 2. If heating the material does not work, try wetting a rag or sponge with tetrahydrofuran (THF) or another strong solvent, and wiping across or along the bend that is exhibiting the stress whitening. THF can be obtained from one of your local chemical suppliers, such as Fisher Scientific or Aldrich Chemicals. Fisher Scientific can be reached at (800) 766-7000. Please keep in mind that proper ventilation and handling should be exercised when handling any solvent.
For more information on cold forming KYDEX® sheet, please contact SEKISUI KYDEX, LLC appLabTM
Because we cannot anticipate or control the many different conditions under which this information and our products may be used, we do not guarantee the applicability of the accuracy of this information or the suitability of our products in any given situation. Users should conduct their own tests to determine the suitability of each product for their particular purposes. Data in the physical property table represents typical values and are to serve only as a guide for engineering design. Results are obtained from specimens under ideal laboratory conditions. Right to change physical properties as a result of technical progress is reserved. THE PRODUCTS DISCUSSED ARE SOLD WITHOUT WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE, EITHER EXPRESSED OR IMPLIED, EXCEPT AS PROVIDED IN OUR STANDARD TERMS AND CONDITIONS OF SALE. Buyer assumes all responsibility for loss or damage arising from the handling and use of our products, whether done in accordance with directions or not. In no event shall the supplier or the manufacturer be liable for incidental or consequential damages. Also, statements concerning the possible use of our products are not intended as recommendations to use our products in the infringement of any patent. Consult local code and regulatory agencies for specific requirements regarding code compliance, transporting, processing, recycling and disposal of our product. Product not intended for use as a heat resistant surface. Texture, product grade and other conditions may cause variations in appearance.
This information supersedes all previously published data.