Steel ductility

In general, the steel used in modern constructions is a material with high ductility. It is resistant to both compression and stretching.

The ductility of steel represents its ability to deform plastically without breaking. This characteristic allows the steel to be drawn or rolled to obtain long and thin products.

The steel is transformed through several technological processes until reaching the shape corresponding to the desired functional role. Ductility, along with casting capacity, forgeability, machining, malleability, weldability and hardening, is part of the technological properties of steel. These properties refer to the way the steel behaves during processing.

Steel with a high carbon content makes the metal very brittle and with low ductility. This is the reason why the steel initially formed in the furnaces is subjected to an additional treatment. To reduce carbon content. The ductility of steel is influenced both by the amount of carbon contained, and by the annealing and tempering treatments to which it is subjected.

The steel used in modern constructions – at the material level, the ductility is expressed by the following requirements:

– the ratio between the breaking strength and the minimum flow resistance is at least equal to 1.20;

– elongation at break is at least equal to 20%.

– the steels used in the structural elements with a dissipative role must have a yield point

distinct, with specific elongation at the end of the yield point, Ae, of at least 1.5%.

For each brand of steel and quality class, the product standards specify the minimum value of elongation at break.

A ductile material allows the redistribution of efforts in the case of statically indeterminate structures, which will be able to take on higher loads than in the case of structures made of brittle materials. The strength of the ductile structure is 50% higher than that of the brittle structure.

H Metal delivers on demand steel products used for the execution of modern constructions.