Black Blade and Hardness

[Sin of Asmodeus]

So, a black blade magus at level 3 gains the ability to ignore the broken condition so long as he has 1 point in his arcane pool.
My question is, how is this affected by hardness, and sundering attempts?
If I attempt to sunder an adamantine weapon with my black blade, does it mean that my BB beats the hardness of 20 ignoring it to deal damage to the weapon?
Or on the other hand, does the adamantine weapon do damage to my black blade and then when it gains broken, it just falls asleep?

[Beopere]

It ignores the broken condition. This means if someone sunders your weapon (following the normal rules for sundering) and it takes enough damage to be broken, you may keep wielding it without incurring any penalties. This also might be useful if you like poking your black blade into vats of acid or lava flows.

You may sunder in turn following the normal rules. Your weapon does not incur damage while you sunder, so you don't need to worry about breaking it.

[Sin of Asmodeus]

The turn around is. What hardness if any does a black blade count as having? What if any hardness does it bypass?

[the Queen's Raven]

Unbreakable (Ex): As long as it has at least 1 point in its arcane pool, a black blade is immune to the broken condition. If broken, the black blade is unconscious and powerless until repaired. If destroyed, the black blade can be reforged 1 week later through a special ritual that costs 200 gp per magus level. The ritual takes 24 hours to complete.
I don't see any listing for hardness for the black blade, not even on the PRD so maybe a DEV needs to chime in on that end. And I think it can only be sundered or broken once all of it's arcane pool points have been spent. So until then is "unbreakable" which I would take to mean that it cannot be sundered or receive the broken condition at all.

[LazarX]

It suffers damage and has hardness that it would have normally for a magic weapon of it's type. It heals that damage the next time the magus prepares spells.

It simply never succumbs to the effect of damage as long as one arcane point remains in the blade. If the blade uses up that point after losing it's hit points... then it's Snap! city.

[Sin of Asmodeus]

The problem is, hardness isnt listed, and what is a normal magic weapon of it's type? I'm hoping we can have someone developer wise feedback on what hardness it has etc.
I understand that as long as it has 1 point it cant be broken, but the issue is, that I have a magus that took black blade who wants to sunder things, and I have no way of knowing what hardness it is, and how the weapon affects hardness. In theory if it's unbreakable then his argument is, it should bypass adamantine because its hardness 10000 vrs hardness 20.
So I'm stuck in this quandary.

[Beopere]

Its a masterwork weapon with an enhancement scaling by level. It also ignore the broken condition. Why must it have strange hardness values?

With regards to hardness it is a normal weapon. Is your blade steel? Use the normal hardness and hp for that weapon. Is it cold Iron? Then use those numbers. Mithril is possible as well I suppose. I imagine a pure bladebound rarely gets an adamantine weapon at level 3. Multiclassers might.

[LazarX]

Sin of Asmodeus wrote:

The problem is, hardness isnt listed, and what is a normal magic weapon of it's type? I'm hoping we can have someone developer wise feedback on what hardness it has etc.

I understand that as long as it has 1 point it cant be broken, but the issue is, that I have a magus that took black blade who wants to sunder things, and I have no way of knowing what hardness it is, and how the weapon affects hardness. In theory if it's unbreakable then his argument is, it should bypass adamantine because its hardness 10000 vrs hardness 20.
So I'm stuck in this quandary.

It's in the section for magic items. If your black blade is a +1 weapon, it gets the hardness of a magic +1 steel weapon of it's type and size. As the blade gets stronger it gets the appropriate increase in hit points and hardness.

In other words save for the unbreakability, treat it as a standard magic weapon in this matter.

[Sin of Asmodeus]

Thank you for that find. That's a big help. ;)