The properties of steel can be classified into 2 main branches:
Mechanical properties: Refers to resistance, ductility and hardness and these, in turn, depend greatly on the type of alloy and composition of the steel hollow section itself.
Plasticity: It is the ability of steel to retain its shape after being subjected to an effort. Steels chequered plate that are alloyed with small percentages of carbon are more plastic.
Fragility: Refers to the ease with which steel can be broken when subjected to stress. When steel is alloyed, with a high percentage of carbon, it tends to be more brittle.
Malleability: It is the property that the steel has to be rolled. This way, several stainless steel alloys tend to be additional malleable than others.
Hardness: It is the resistance that a metal opposes to abrasive agents. The more carbon you add to steel flat bar alloy, the harder it will be. Tests on Brinel (HB) or Rockwel C (HRC) units are generally used to verify the degree of hardness.