The Class D Single-Column Charpy Impact Tester features a striking edge with a radius of 2 mm. This rounded edge is a critical design element that affects how impact energy is delivered to the notched specimen during testing.

A 2 mm radius provides a controlled contact point, concentrating force in a consistent area and enabling accurate measurement of absorbed energy. This geometry helps standardize stress distribution at the moment of impact, which is essential for generating repeatable and meaningful test data.

The selected radius aligns with established Charpy testing standards, ensuring comparability of results across different machines and testing conditions.

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