Another suggestion, can we change tungsten to adamantine?
Basically it has nearly the same properties as tungsten (albeit literally diamond-hard) but in our world it's called Adamantine. Otherwise it's roughly as rare as real life tungsten and perhaps we'll see them in composite shells in later war cannon munitions.
There'd be another material called Adamantium which is a type of adamantine alloy created by dwarves. It's dense and hard but also has some more elasticity thus it's more enduring overall.
Dwarves guard the secret to the proper creation of this alloy and technically each clan has their own variation on Adamantium (with various minor differences).

What do you think?