3. Application performance of structural steels

Structural steels are essentially defined by their properties of use.

These properties of use are guaranteed. They are :

• yield strength at 20°C,R _eH expressed in N/mm ² ;

• tensile strength at 20 °C,R _m expressed in N/m ;

• elongation at break at 20 °C,A expressed in % ;

• the impact bending fracture energy KV expressed in Joule (also known as resilience, without the value being expressed per cm ² ) on a Charpy V specimen at room temperature and, if required, at low temperature.