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About This Item
Full Description
Purpose.
This standard describes the test procedures to evaluate the stone impact resistance of organic coatings. It is applicable to coated metallic, plastic, or composite materials. Method A is a contained method where the gravelometer is contained in a constant temperature freezer and Method B is the transfer method where test panels are transferred from a freezer to the gravelometer at room temperature. Method C is a contained method where the gravelometer is contained in a constant temperature room. If this standard is used on uncoated panels (e.g., molded-in-color (MIC) plastic), alternate evaluation and rating procedures will be required.
Method A: A cold room or freezer of sufficient size in which the gravelometer and the test samples can be maintained at (-18 ± 2) °C.
Method B: A freezer in which the test samples can be cooled to the test temperature of (-18 ± 2) °C. Preconditioning that causes frost on the surface of the test specimens must be avoided.
Method C: A room in which the gravelometer and the test samples can be maintained at (22 ± 5) °C.
Document History
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GMW GMW14700
viewing
Stone Impact Resistance of Coatings- Most Recent
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GMW GMW14700
Stone Impact Resistance of Coatings- Historical Version
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GMW GMW14700
Stone Impact Resistance of Coatings- Historical Version
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GMW GMW14700
Stone Impact Resistance of Coatings- Historical Version
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GMW GMW14700
Stone Impact Resistance of Coatings- Historical Version