Correct Answer - Option 2 : ductile
1. Fe 500D the term “Fe” denotes Iron,
2. 500 :-yield stress in N/mm2
3. D:-denotes the ductility.
Steel commonly used in construction industry are:
a) Mild Steel (MS) bars conforming to IS-432, Part-I.
b) High Yield Strength Deformed (HYSD) bars. Two types of HYSD bars are hot Rolled HYSD bars conforming to IS-1139 and Cold Worked HYSD bars conforming to IS-1786. These are also known as Cold Twisted Deformed (CTD) bars or Tor steel. The most commonly used HYSD bars for RCC work are the CTD bars.
As per Table Number 22 of IS 456:2000, the minimum characteristic yield strength for hot rolled high yield strength deformed bar is 415 N/mm2.
