ISO 148-1

Charpy Impact Testing

Charpy impact testing measures the energy absorbed by a standardised notched specimen when struck by a swinging pendulum. It characterises a material’s toughness and brittle-to-ductile transition temperature. ISO 148-1 is mandatory for structural steels, pressure vessels, and pipelines operating at low temperatures or in impact-prone environments.

What it measures

Absorbed impact energy (KV2, KU2) in joules
Lateral expansion
Fracture appearance (percentage shear area)
Ductile-to-brittle transition temperature (DBTT)

🇩🇪 DIN EN ISO 148-1 🇬🇧 BS EN ISO 148-1 🇫🇷 NF EN ISO 148-1 🇮🇹 UNI EN ISO 148-1 🇪🇸 UNE EN ISO 148-1 🇳🇱 NEN EN ISO 148-1 🇩🇪 DIN EN ISO 148-2 🇬🇧 BS EN ISO 148-2 🇫🇷 NF EN ISO 148-2 🇮🇹 UNI EN ISO 148-2 🇪🇸 UNE EN ISO 148-2 🇳🇱 NEN EN ISO 148-2

81 Accredited labs

4 Countries