[1] The quenching process produces a high strength bar from inexpensive low carbon steel.
A microprocessor controls the water flow to the quench box, to manage the temperature difference through the cross-section of the bars.
When the cut ends of TMT bars are etched in Nital (a mixture of nitric acid and methanol), three distinct rings appear: 1.
In contrast, lower grades of rebar are twisted when cold, work hardening them to increase their strength.
These are much stronger compared with conventional CTD Bars and give up to 20% more strength to concrete structure with same quantity of steel.