Can someone recommend me good build prefarbly tank for trying first time HC? (Already lvl 85 bladmaster in normal)
Best character for 1st hardcore build is Sigil of Destruction
Max out sigil by level 9 then put 3 points in Curse and max out Vulnerability.
Once you have the six devotion points needed grab aetherfire.
Then work your way to Destruction and max it out by level 22.
Just grab whatever gear is best defensively and look for a vitality implement. Tho You do need caster chest, helmet and focus to sustain the energy cost.
This is all you need to get to elite basically sleep walking.
Here’s the build I’m doing right now getting ready for the expansion. Just Killed Log at 37 with with 27 Skill points and 27 Attribute Points on Used. Build is very hardcore ready 
http://www.grimtools.com/calc/pZrym0V6
After maxing out destruction You can then either work your way to getting doombolt or decide on your 2nd class and start getting skills from there.
Thx for idea