Which standards are related?

This topic is commonly discussed alongside ISO 148-1, ASTM E23. Always confirm requirements with the official standard text and your quality system.

How should I interpret the results?

Normalize Charpy or Izod absorbed energy to impact toughness aK using ligament area beneath the notch. Treat outputs as auxiliary checks; validate against your methods, equipment calibration, and applicable standards.

Impact testing

Impact energy & toughness

Normalize Charpy or Izod absorbed energy to impact toughness aK using ligament area beneath the notch.

Inputs

Test type

Absorbed energy E (J)

Test temperature (°C) (Optional)

Width b at notch (mm)

Height h at notch (mm)

Results

Reported energy

—

Impact toughness aK (kJ/m²)

—

Notched specimen (schematic).

Computes aK = E / (b·h) in kJ/m² from machine energy and specimen dimensions at the notch. Charpy notch geometry reminders follow ISO 148-1 / ASTM E23 conventions.

Need help choosing?

Our applications team can match equipment to your standards and samples.

Contact our team