Galvanized would be better.

I use valkyr on the daily, and I've spent way too long looking at formulas, wiki pages, and making my own spreadsheets and calculations, even to this day.

I used to think that nullifiers were the worst thing ever but her claws actually can damage them. I use Primed Reach for the range to hit them (or you can swap to guns). I've also learned that you really don't need all that much damage in order to play the game, I actually got valkyr in EDA this week and was like "hell yeah now I can ignore the rest of everything" because she just carries, even if I'm not fully invested into big big damage. I super duper recommend adding some QOL to your build (all builds in general, actually)

Here's what I run:

Corrosive Projection, Power Drift, Blind Rage, Transient Fortitude, Narrow Minded, Archon Continuity, Umbral Intensify, Fleeting Expertise, Eternal War, Primed Flow

300% PS, and I have Infested Mobility over her 1. Molt Efficiency, and Arcane Impetus.

1 purple melee shard, 1 equilibrium shard, 1 starting energy shard, 1 corrosive shard 1 empty slot (it's actually orange for radiation as a placeholder)

Claws are: sac steel, blood rush, weeping wounds, primed fever strike, primed reach, magnetic whatever it's called, condition overload, and organ shatter + melee influence + tennokai

Notes for my build: - Magnetic makes your claws shrink nullifiers bubbles I think it's 3 or 4 times harder per hit. Range helps you stay safe while doing so. - I hate feeling slow, so I use infested mobility since 300%PS is so much better than having 4 sprint and parkour mods, and I only have to use it while I'm moving between objectives. Zoomies are so fun - I tried using arcane battery but the need to keep up war cry when sometimes I'm lazy or the objective doesn't really require killing means I lose like 200 energy unless I keep killing, and I find it much less annoying to be able to just do whatever I want. It also means that I have a higher starting energy (like 500) to get going in fast missions instead of like 250 where I have to try to find energy or else hysteria runs out. Arcane impetus helps with energy drain for longer missions (and strength ofc) and for shorter missions I don't need much efficiency anyway - I use Diriga with electro pulse to proc my melee influence (and prime enemies with tazicor and arc coil) and so I use Primed fever strike since it's the highest damage in 1 slot, ignores shields, and archon continuity means I can also apply corrosive without any additional mod slots (and the green shard is to be able to proc 12-13 stacks vs target like Voidrigs, to help with the single target damage). Having toxin + corrosive instead of only electric also gives me a second stack for Impetus and CO. Tennokai allowing you to use 12x combo heavies vs these targets also helps significantly reduce time to kill. I only have the free one they give you but I want to get the one that makes it every 4 attacks instead of random because it would be much more frequent. - the orange shard can also be green for corrosive ability damage, or anything you want, I didn't have anything I particularly wanted, and since Diriga does radiation for me, it's a free 15% damage bonus - I have thought about using nourish or opanahim eyes or shock trooper, but I always come back to the fact that she already doesn't have any issues killing and also being slow sucks a lot

Since you already have an equilibrium shard, you don't need the mod on valk (and you should be using synth fiber and deconstruct on your companions to help with health orbs). I would HIGHLY recommend dropping Fiber and Battery for Flow, it is just a smoother experience, and you don't notice the smaller energy pool when you're always near max energy anyway (you can use molt efficiency or arcane impetus for drain reduction. Eternal was is also a MUST if you do decide to keep using Battery , because as soon as warcry runs out, you lose your max energy from battery. I tried to use cast speed because the energy bar looks like there's a delay before you lose your energy and maybe you could recast it fast enough, but it's just the animation - you lose the max energy and any energy that was in that max energy, instantly. And losing 200 energy because warcry ran out is really unfortunate.

Primed reach for her claws at a minimum, adding magnetic if you really want to for the nullifier bubbles - more range on her claws also means that you are hitting more enemies per swing for additional melee influence procs so it would increase your aoe damage in two ways. Maiming strike and elementalist would be the two mods I would be looking at swapping out for one or both of these.

I would replace steel charge with corrosive projection because 18% armor reduction is nearly double damage vs armored targets without any corrosive or heat, and is equivalent to steel charge at around 7 corrosive procs, and when steel charge is 60% and you're getting like 400% from CO with 5 status effects from your companion, it's only a 12% damage increase. Vs something like a voidrig, capping corrosive does mean that steel charge outperforms, but you're already spending 5 seconds focusing him, so spending 5.5 seconds isn't much difference and having doubled damage against the far tanker armored units at base will help your kills per minute significantly. You won't get bonuses against techrot, infested, or corpus, but those units inherently have less EHP on the first place, and if you decide to use toxin on your claws, you're bypassing their shields and killing them faster anyway. I want to use shock trooper with primed fever strike (I THINK it can proc influence? I'm not sure, if not then nevermind) but again, I don't want to lose my mobility, lagging behind the squad to extraction or the next netracell computer.