Astm D2794 Pdf Upd | No Survey

You're looking for information on ASTM D2794, specifically a PDF version of the standard. Here's some good content related to the topic:

Introduction: The American Society for Testing and Materials (ASTM) has developed a standard test method for evaluating the resistance of organic coatings to the effects of rapid deformation, also known as impact resistance. This test method is designated as ASTM D2794. The purpose of this test is to assess the ability of a coating to withstand the stresses imposed by sudden impacts, such as those encountered during handling, transportation, or in-service conditions.

Option 1: ASTM International (Official Source)

Go directly to the ASTM website.

• Blistering: The formation of blisters on the surface of the coating.
• Cracking: The formation of cracks in the coating.
• Loss of adhesion: The coating's ability to maintain adhesion to the substrate.
• Chemical resistance: The coating's ability to resist chemical attack.

The test determines the "impact strength" of a coating by dropping a standard weight through a guide tube onto an indenter that deforms the coated specimen.

Have questions about interpreting your impact test results? Let us know in the comments below!

1. A Vertical Guide Tube: Usually 1 meter (approx. 40 inches) long with marked increments.
2. An Indenter (Punch): A hemispherical steel tip (standard sizes are ½ inch or 0.64 inches in diameter).
3. A Die (Base plate): Located at the bottom of the tube, with an opening that aligns with the indenter.
4. A Weight (Dart/Striker): A known mass (often 2 lbs or 4 lbs) that is dropped from a specific height.