Intel's thermal throttling will kick in at 95C, at this temp the processor lowers its clock speed and voltage in an attempt to reduce heat, so some may say 95C is the max safe temp, but I personally wouldn't want to go over 80C for stress testing, and many people will say lower than that.
It kind of depends on what you feel comfortable with.
Certainly at the temps and voltage you've mentioned your processor will be fine for many years to come.
Thank you, weather is getting warm and I never pushed my cpu's above 4.0+GHz before so I wanted to ask more experienced overclockers.
It never passed 70c so I guess all is good then?