Don't you know that the questions here are posed to real people rather than to a machine?
Please show some respect and simple courtesy. Many of the forum members go to great lengths to provide helpful answers. The least that OPs such as yourself could do is to spend a few extra seconds to include a semblance of politeness in your query by asking for rather than demanding an answer.
IS-2062 equivalent (almost) is ASTM A36, but to be frank, current IS-2062 is more leaning towards DIN 10025.
Again there are grades in both, and many, and you may not get exact equivalents. Check individual properties and let your designer decide based on the requirements.
Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches