Thank you for your reply! I ran 3500 iterations to check and this is the result that I have:

I have checked my results and there is no difference from the previous simulation shown in the first post with 850 iterations. 

Temperature graph for 3500 iterations

(temperature graph for 3500 iterations)


(temperature graph for 850 iterations(or less due to convergence))

Since this is the case, would it be correct for me to state that it reached convergence correctly and that I am able to use 850 iterations for all my simulations?