This standard is vital for safety-critical industries to prevent catastrophic brittle failure in: : Structural steel for bridges and buildings.

: Specimens may be heated or cooled (down to -196°C) to test behavior at different temperatures.

: To maintain temperature integrity, specimens must be transferred from the conditioning bath to the testing machine and struck within 5 seconds .

: To determine a metal's impact energy and strength, specifically to assess whether it behaves in a tough or brittle manner. It is often used to identify the ductile-to-brittle transition temperature (DBTT) .

ASTM E23 Notched bar impact test, Charpy & Izod - ZwickRoell

: The specimen is held vertically at one end, and the pendulum strikes the upper, non-gripped end.

: Components that must withstand high-speed impacts or extreme temperatures.