How do I do damage to necramechs?

[(PSN)Primord3lion]

Most of the wepons im using has corrosive on them, aside from that no matter what I do im barely chipping off the mechs health is there any methods as to how to kill it? 

[Miser_able]

I mainly use the stropha or octavia. octavia's mallet wrecks them. and the stropha can punch through them and hit their back

[SpiritTeA]

Necramechs can be damaged only to weakspots (scar back and arms/scars after shooting off arms). So you can just take ignis and shoot aiming at area between right shoulder and skull. With Mausolon you can easily strip off one of hands and just shoot at exposed place, because it has AoE radial attack, and it will damage spot. But Stropha is champion indeed, because it can hit all 3 weakspots at one shot (2 hands and scar on the back). 

 Statuses not work on them so your corrosion won’t do much. Don’t remember if shattering impact works tho

[(NSW)OinTygon]

I agree with the above, I'd just like to add that necramechs are weak to radiation damage, so build for that.

[SuselMaks]

Everything above, but necramechs are also slowed down by nova's molecular prime, necramechs thrown canister, etc. this makes them much easier to handle. 

[mkah_mvet]

I'm still getting the hang of them myself, but for me it seems they spend a lot of time in invincible mode, which I understand is one of their powers, which additionally reflects damage.  So watch out for that.

[LokiTheCondom]

As others have said, go for the blue orb spheres thingy on their shoulders and back. 

They can be stunned by your Necramech's slide attack too, so it opens them up to be damaged at your leisure. 

Would also advise to watch out for their Storm Shroud. The moment their health bar goes grey, wait about 3-4 seconds otherwise attacking them at this period would cause the damage be absorbed and converted into health ala Iron Skin. 

[Twisted_Wisdom]

I use high crit. chance radiation damage Catchmoon (use pax charge) on enemy necramechs, also have Arcane Velocity on warframe (inaros).
Don't shoot when mech is invulnerable or you will one-shot your (possibly) immortal warframe.

[sidematerial1142]

If you are having trouble, just stick to Revenant or Octavia. If you have a good amp, use it when Storm Shroud is up, as far as I know void beam doesn't get reflected.

[(PSN)iuvenilis]

Gara with enough damage stacked on splinter storm can kill them instantly. Ogris with napalm mod works pretty well.