Core loss of an inductor
I am getting around 80kW/m3

You need to examine the volume of the core used: -

So, in cubic metres, the volume of your core is: -
$$\dfrac{102000}{1\text{ billion}} = 0.000102 \text{ m}^3$$
So, if the material is capable of working at a power loss level of 80 kW per cubic metre, the actual core set could be used with a loss up to 8.16 watts. Here's an example of 3C90 material from Ferroxcube: -

As you can see, if you run at 200 mT peak flux density (which is fine for most transformers and quite a few inductors) and 100 kHz, you can achieve levels of 450 kW/m³ and that means your core (if made from that material and running at 200 mT and 100 kHz), will be producing a power loss of around 46 watts. It's down to operating frequency and peak flux density.

I have noticed in the data sheet you linked this information: -

It is telling you that for your core set running at 100 mT and 100 kHz, that the core power dissipation is 9.50 watts (bringing about a rise to 100 °C). And, if you divided that number by core volume you get a figure of 93 kW/m³ as a material specification so, maybe your 80 kW/m³ number is meant to be conservative?