Imagine a pencil and a copper wire. If you apply sudden pressure to a pencil, it snaps (strength without ductility). If you apply it to the wire, it bends but stays in one piece (strength with ductility). In an earthquake, you want your house to behave like the wire.
The Tata Tiscon 550SD Edge
Standard “local” TMT bars are often made from scrap that contains high carbon. This makes them hard but brittle. Under seismic stress, these bars snap at the joints. Tata Tiscon 550SD is manufactured to have a high UTS/YS ratio. This means it can stretch significantly before it breaks. This “stretch” gives the residents time to evacuate the building safely.
Conclusion
Don’t be fooled by “extra hard” steel. For home safety, you need the “Super Ductile” performance of Tata Tiscon from De Son.